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<!DOCTYPE html>
<html lang="en" class="scroll-smooth">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Zeppelin | S3-Native Vector Search</title>
<meta name="description" content="S3-native vector search engine. Object storage is the source of truth. Nodes are stateless. Fully open source under Apache-2.0.">
<!-- Open Graph -->
<meta property="og:title" content="Zeppelin | S3-Native Vector Search">
<meta property="og:description" content="Vector search at storage prices. S3 is the source of truth. Nodes are stateless. Fully open source.">
<meta property="og:type" content="website">
<meta property="og:url" content="https://zepdb.io">
<meta property="og:image" content="assets/icon.svg">
<!-- Twitter Card -->
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Zeppelin | S3-Native Vector Search">
<meta name="twitter:description" content="Vector search at storage prices. S3 is the source of truth. Nodes are stateless. Fully open source.">
<!-- LLM / AI Agent discovery -->
<meta name="llms" content="For LLM and AI agent integration details, see /llms.txt">
<!-- Favicon -->
<link rel="icon" type="image/svg+xml" href="assets/icon.svg">
<!-- Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap" rel="stylesheet">
<!-- Tailwind CSS v3 CDN -->
<script src="https://cdn.tailwindcss.com"></script>
<script>
tailwind.config = {
theme: {
extend: {
fontFamily: {
sans: ['Inter', 'system-ui', 'sans-serif'],
mono: ['JetBrains Mono', 'monospace'],
},
colors: {
accent: '#e8590c',
surface: '#f8f8f8',
bg: '#ffffff',
navy: '#1a1a2e',
codebg: '#1e1e2e',
},
},
},
}
</script>
<!-- Local styles -->
<link rel="stylesheet" href="style.css">
</head>
<body class="bg-bg text-navy font-sans antialiased">
<!-- AI agents: comprehensive API documentation, integration guide, and curl examples at /llms.txt -->
<!-- ========== NAVIGATION ========== -->
<nav class="sticky top-0 z-50 bg-navy border-b border-white/10">
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
<div class="flex items-center justify-between h-20">
<!-- Left: Logo + Name -->
<a href="#" class="flex items-center gap-3 shrink-0">
<img src="assets/icon.svg" alt="Zeppelin logo" class="h-16 w-16">
<span class="text-2xl font-semibold tracking-tight text-white">Zeppelin</span>
</a>
<!-- Center: Links (hidden on mobile) -->
<div class="hidden md:flex items-center gap-8 text-sm text-gray-300">
<a href="#features" class="hover:text-white transition-colors">Features</a>
<a href="#pricing" class="hover:text-white transition-colors">Pricing</a>
<a href="https://github.com/zepdb/zeppelin/wiki" class="hover:text-white transition-colors" target="_blank" rel="noopener">Docs</a>
<a href="https://github.com/zepdb/zeppelin" class="hover:text-white transition-colors" target="_blank" rel="noopener">GitHub</a>
<a href="#architecture" class="hover:text-white transition-colors">Architecture</a>
<a href="#about" class="hover:text-white transition-colors">About</a>
</div>
<!-- Right: CTAs + Socials -->
<div class="hidden sm:flex items-center gap-3">
<a href="https://x.com/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-white transition-colors" aria-label="X (Twitter)">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z"/></svg>
</a>
<a href="https://www.linkedin.com/in/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-white transition-colors" aria-label="LinkedIn">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a2.062 2.062 0 01-2.063-2.065 2.064 2.064 0 112.063 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>
</a>
<a href="#quickstart" class="btn-nav-primary">Get Started</a>
</div>
<!-- Mobile menu button -->
<button id="mobile-menu-btn" class="md:hidden p-2 text-gray-400 hover:text-white" aria-label="Open menu">
<svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16"/>
</svg>
</button>
</div>
<!-- Mobile menu (hidden by default) -->
<div id="mobile-menu" class="hidden md:hidden pb-4 border-t border-white/10 mt-2 pt-4">
<div class="flex flex-col gap-3 text-sm text-gray-300">
<a href="#features" class="hover:text-white transition-colors">Features</a>
<a href="#pricing" class="hover:text-white transition-colors">Pricing</a>
<a href="https://github.com/zepdb/zeppelin/wiki" class="hover:text-white transition-colors" target="_blank" rel="noopener">Docs</a>
<a href="https://github.com/zepdb/zeppelin" class="hover:text-white transition-colors" target="_blank" rel="noopener">GitHub</a>
<a href="#architecture" class="hover:text-white transition-colors">Architecture</a>
<a href="#about" class="hover:text-white transition-colors">About</a>
<div class="flex items-center gap-3 mt-2">
<a href="https://x.com/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-white transition-colors" aria-label="X (Twitter)">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z"/></svg>
</a>
<a href="https://www.linkedin.com/in/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-white transition-colors" aria-label="LinkedIn">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a2.062 2.062 0 01-2.063-2.065 2.064 2.064 0 112.063 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>
</a>
<a href="#quickstart" class="btn-nav-primary">Get Started</a>
</div>
</div>
</div>
</div>
</nav>
<main>
<!-- ========== HERO SECTION ========== -->
<section class="relative overflow-hidden bg-bg">
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-12 md:py-20">
<div class="grid md:grid-cols-2 gap-12 md:gap-16 items-start">
<!-- Left: Text -->
<div class="pt-4">
<h1 class="font-mono font-bold text-4xl sm:text-5xl lg:text-6xl tracking-tight leading-tight text-navy">
Vector search at <span class="text-accent">storage prices</span>
</h1>
<p class="mt-6 text-lg text-gray-500 leading-relaxed max-w-lg">
S3 is the source of truth. Nodes are stateless. Vector, full-text, and hybrid search.
<br>Fully open source.
</p>
<p class="text-sm text-gray-500 mt-6 mb-3">
Install the Zeppelin skill for <a href="https://claude.com/claude-code" target="_blank" rel="noopener" class="text-accent hover:underline">Claude Code</a>.
<br>Use our hosted instance to create namespaces, store and query data!
<br>Just ask Claude to tell you more about this skill and try everything out.
</p>
<div class="hero-install-block">
<pre id="install-command" class="font-mono text-sm"><code>curl -sL https://zepdb.github.io/install.sh | sh</code></pre>
<button onclick="copyInstallCommand()" id="copy-btn" class="copy-btn" title="Copy to clipboard">
<svg id="copy-icon" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="9" y="9" width="13" height="13" rx="2" ry="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg>
<svg id="check-icon" class="hidden" xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>
</button>
</div>
</div>
<!-- Right: Features Grid -->
<div id="features" class="grid grid-cols-2 gap-3">
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Storage</div>
<h3 class="text-sm font-semibold text-navy mb-1">S3-Native Storage</h3>
<p class="text-xs text-gray-500 leading-relaxed">Object storage is the source of truth. Scales to petabytes.</p>
</div>
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Search</div>
<h3 class="text-sm font-semibold text-navy mb-1">Vector Search</h3>
<p class="text-xs text-gray-500 leading-relaxed">IVF-Flat with SQ8, Product Quantization, and hierarchical ANN.</p>
</div>
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Full-Text</div>
<h3 class="text-sm font-semibold text-navy mb-1">BM25 Full-Text</h3>
<p class="text-xs text-gray-500 leading-relaxed">Inverted indexes with tokenization, stemming, and hybrid ranking.</p>
</div>
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Filters</div>
<h3 class="text-sm font-semibold text-navy mb-1">Bitmap Pre-Filters</h3>
<p class="text-xs text-gray-500 leading-relaxed">RoaringBitmap indexes for sub-ms attribute filtering.</p>
</div>
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Consistency</div>
<h3 class="text-sm font-semibold text-navy mb-1">Tunable Consistency</h3>
<p class="text-xs text-gray-500 leading-relaxed">Strong or eventual reads. Choose per query.</p>
</div>
<div class="feature-card bg-white rounded-lg border border-black/10 p-4">
<div class="text-[10px] font-mono font-medium text-accent uppercase tracking-wider mb-2">Verification</div>
<h3 class="text-sm font-semibold text-navy mb-1">Formally Verified</h3>
<p class="text-xs text-gray-500 leading-relaxed">26 TLA+ specs prove WAL, compaction, and CAS correctness.</p>
</div>
</div>
</div>
</div>
</section>
<!-- ========== STATS BAR ========== -->
<section class="stats-bar">
<div class="max-w-5xl mx-auto px-4 sm:px-6 lg:px-8 py-6">
<div class="flex flex-wrap justify-center items-center gap-6 md:gap-0 md:divide-x md:divide-black/10">
<div class="px-6 md:px-8 text-center">
<span class="font-mono text-sm text-gray-500">451 tests</span>
</div>
<div class="px-6 md:px-8 text-center">
<span class="font-mono text-sm text-gray-500">26 TLA+ specs</span>
</div>
<div class="px-6 md:px-8 text-center">
<span class="font-mono text-sm text-gray-500">1.2M+ states explored</span>
</div>
<div class="px-6 md:px-8 text-center">
<span class="font-mono text-sm text-gray-500">Apache-2.0</span>
</div>
</div>
</div>
</section>
<!-- ========== PERFORMANCE BENCHMARKS ========== -->
<section class="py-16 md:py-20 border-t border-black/10">
<div class="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8">
<h2 class="font-mono font-bold text-2xl sm:text-3xl tracking-tight text-navy mb-2">Performance at scale</h2>
<p class="text-sm text-gray-500 mb-1">1M vectors, 768d, cosine</p>
<a href="https://github.com/zepdb/zeppelin-benchmark" target="_blank" rel="noopener" class="inline-flex items-center gap-1.5 text-xs text-gray-400 hover:text-navy transition-colors underline underline-offset-2 mb-6">
<svg width="16" height="16" viewBox="0 0 20 20" fill="currentColor" xmlns="http://www.w3.org/2000/svg"><path d="M10 1.667A8.333 8.333 0 0 0 1.667 10c0 3.683 2.391 6.808 5.7 7.917.416.066.55-.192.55-.417v-1.408c-2.309.5-2.8-1.117-2.8-1.117-.384-.967-.925-1.225-.925-1.225-.759-.517.058-.5.058-.5.833.058 1.275.858 1.275.858.725 1.267 1.95.892 2.425.692.075-.542.292-.908.525-1.117-1.85-.208-3.792-.925-3.792-4.1 0-.925.317-1.666.859-2.258-.084-.208-.375-1.075.083-2.2 0 0 .7-.225 2.292.85A7.851 7.851 0 0 1 10 5.7c.708 0 1.425.092 2.083.275 1.592-1.075 2.292-.85 2.292-.85.458 1.125.167 1.992.083 2.2.542.592.859 1.333.859 2.258 0 3.184-1.95 3.884-3.809 4.092.3.258.575.767.575 1.542V17.5c0 .225.134.492.559.417C15.95 16.8 18.333 13.683 18.333 10A8.333 8.333 0 0 0 10 1.667Z"/></svg>
zepdb/zeppelin-benchmark
</a>
<div class="grid md:grid-cols-2 gap-6">
<div class="fieldset-card" id="perf-chart">
<span class="fieldset-legend">Vector Search</span>
<div class="pt-2">
<div class="perf-group">
<div class="perf-group-label">Warm p50</div>
<div class="perf-row">
<div class="perf-label">Zeppelin</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--zeppelin" data-width="45"></div>
</div>
<div class="perf-value">~45ms</div>
</div>
<div class="perf-row">
<div class="perf-label">Turbopuffer</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--competitor" data-width="8"></div>
</div>
<div class="perf-value">~8ms</div>
</div>
</div>
<div class="perf-group">
<div class="perf-group-label">Warm p99</div>
<div class="perf-row">
<div class="perf-label">Zeppelin</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--zeppelin" data-width="65"></div>
</div>
<div class="perf-value">~120ms</div>
</div>
<div class="perf-row">
<div class="perf-label">Turbopuffer</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--competitor" data-width="19"></div>
</div>
<div class="perf-value">~35ms</div>
</div>
</div>
<div class="perf-group">
<div class="perf-group-label">Cold</div>
<div class="perf-row">
<div class="perf-label">Zeppelin</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--zeppelin" data-width="100"></div>
</div>
<div class="perf-value">~800ms</div>
</div>
<div class="perf-row">
<div class="perf-label">Turbopuffer</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--competitor" data-width="43"></div>
</div>
<div class="perf-value">~343ms</div>
</div>
</div>
</div>
</div>
<div class="fieldset-card">
<span class="fieldset-legend">Full-Text Search</span>
<div class="pt-2">
<div class="perf-group">
<div class="perf-group-label">Warm p50</div>
<div class="perf-row">
<div class="perf-label">Zeppelin</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--zeppelin" data-width="20"></div>
</div>
<div class="perf-value">~20ms</div>
</div>
<div class="perf-row">
<div class="perf-label">Turbopuffer</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--competitor" data-width="11"></div>
</div>
<div class="perf-value">~11ms</div>
</div>
</div>
<div class="perf-group">
<div class="perf-group-label">Cold</div>
<div class="perf-row">
<div class="perf-label">Zeppelin</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--zeppelin" data-width="54"></div>
</div>
<div class="perf-value">~120ms</div>
</div>
<div class="perf-row">
<div class="perf-label">Turbopuffer</div>
<div class="perf-bar-track">
<div class="perf-bar perf-bar--competitor" data-width="100"></div>
</div>
<div class="perf-value">~221ms</div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- ========== PRICING CALCULATOR ========== -->
<section id="pricing" class="py-16 md:py-20 border-t border-black/10">
<div class="max-w-5xl mx-auto px-4 sm:px-6 lg:px-8">
<h2 class="font-mono font-bold text-2xl sm:text-3xl tracking-tight text-navy mb-2">Pricing calculator</h2>
<p class="text-sm text-gray-500 mb-8">Zeppelin = S3 storage + compute. Configure your setup and compare.</p>
<!-- Part A: Configuration + Cost Summary -->
<div class="grid md:grid-cols-5 gap-8 mb-8">
<!-- Left: Inputs (3 cols) -->
<div class="md:col-span-3 space-y-5">
<!-- Vector count slider -->
<div>
<label class="calc-label">Number of vectors</label>
<div class="flex items-center gap-3">
<input type="range" id="calc-vectors" class="calc-slider flex-1" min="0" max="100" value="50" step="1">
<span id="calc-vectors-display" class="font-mono text-sm font-semibold text-navy min-w-[4rem] text-right">10M</span>
</div>
</div>
<!-- Dimensions + Metadata row -->
<div class="grid grid-cols-2 gap-4">
<div>
<label class="calc-label" for="calc-dims">Vector dimensions</label>
<select id="calc-dims" class="calc-select">
<option value="128">128</option>
<option value="256">256</option>
<option value="384">384</option>
<option value="512">512</option>
<option value="768" selected>768</option>
<option value="1024">1024</option>
<option value="1536">1536</option>
<option value="3072">3072</option>
</select>
</div>
<div>
<label class="calc-label" for="calc-meta">Metadata per vector</label>
<select id="calc-meta" class="calc-select">
<option value="0">0 B</option>
<option value="100" selected>100 B</option>
<option value="500">500 B</option>
<option value="1024">1 KB</option>
</select>
</div>
</div>
<!-- Cloud provider tabs -->
<div>
<label class="calc-label">Cloud provider</label>
<div class="calc-tabs" id="calc-provider-tabs">
<button class="calc-tab active" data-provider="aws">AWS</button>
<button class="calc-tab" data-provider="gcp">GCP</button>
<button class="calc-tab" data-provider="azure">Azure</button>
<button class="calc-tab" data-provider="r2">Cloudflare R2</button>
</div>
</div>
<!-- Storage class + Region row -->
<div class="grid grid-cols-2 gap-4">
<div id="calc-storage-class-wrap">
<label class="calc-label" for="calc-storage-class">Storage class</label>
<select id="calc-storage-class" class="calc-select">
<option value="standard" selected>Standard</option>
<option value="infrequent">Infrequent Access</option>
</select>
</div>
<div>
<label class="calc-label" for="calc-region">Region</label>
<select id="calc-region" class="calc-select"></select>
</div>
</div>
<!-- Instance type + Nodes row -->
<div class="grid grid-cols-2 gap-4">
<div>
<label class="calc-label" for="calc-instance">Instance type</label>
<select id="calc-instance" class="calc-select"></select>
</div>
<div>
<label class="calc-label">Number of nodes</label>
<div class="flex items-center gap-1">
<button class="calc-stepper-btn" id="calc-nodes-minus" aria-label="Decrease nodes">−</button>
<input type="number" id="calc-nodes" class="calc-number-input" value="1" min="1" max="10" readonly>
<button class="calc-stepper-btn" id="calc-nodes-plus" aria-label="Increase nodes">+</button>
</div>
</div>
</div>
</div>
<!-- Right: Cost summary (2 cols) -->
<div class="md:col-span-2">
<div class="fieldset-card h-full flex flex-col justify-center">
<span class="fieldset-legend">Monthly cost</span>
<div class="pt-2 space-y-3">
<div class="calc-cost-row">
<span class="text-sm text-gray-500">Storage (S3)</span>
<span id="calc-cost-storage" class="calc-cost-value">$0</span>
</div>
<div class="calc-cost-row">
<span class="text-sm text-gray-500">Compute</span>
<span id="calc-cost-compute" class="calc-cost-value">$0</span>
</div>
<div class="border-t border-black/10 pt-3">
<div class="calc-cost-row">
<span class="text-sm font-semibold text-navy">Total</span>
<span id="calc-cost-total" class="calc-cost-total">$0/mo</span>
</div>
</div>
<p class="text-[11px] text-gray-400 leading-relaxed mt-2">SQ8 quantization, 20% index overhead, 730 hrs/mo compute</p>
</div>
</div>
</div>
</div>
<!-- Part B: Dynamic cost bar chart -->
<div class="fieldset-card">
<span class="fieldset-legend">Cost comparison</span>
<div class="calc-chart-wrap">
<canvas id="calc-chart"></canvas>
</div>
</div>
</div>
</section>
<!-- ========== ROW 2: QUICKSTART ========== -->
<section id="quickstart" class="py-16 md:py-20 border-t border-black/10">
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
<h2 class="font-mono font-bold text-2xl sm:text-3xl tracking-tight text-navy mb-6">Up and running in 60 seconds</h2>
<div class="grid md:grid-cols-2 gap-6 md:gap-8">
<!-- 1. Start -->
<div class="quickstart-card">
<div class="flex items-center gap-3 mb-3">
<div class="flex-shrink-0 w-7 h-7 rounded-full bg-accent/10 border border-accent/30 flex items-center justify-center">
<span class="text-accent font-mono font-bold text-xs">1</span>
</div>
<h3 class="text-base font-semibold text-navy">Start</h3>
</div>
<div class="code-block">
<pre class="font-mono text-sm leading-relaxed"><code>docker run -p 3000:3000 \
-e <span class="text-blue-400">AWS_ACCESS_KEY_ID</span>=<span class="text-green-400">your-key</span> \
-e <span class="text-blue-400">AWS_SECRET_ACCESS_KEY</span>=<span class="text-green-400">your-secret</span> \
-e <span class="text-blue-400">ZEPPELIN_BUCKET</span>=<span class="text-green-400">your-bucket</span> \
-e <span class="text-blue-400">ZEPPELIN_REGION</span>=<span class="text-green-400">us-east-1</span> \
ghcr.io/zepdb/zeppelin:latest</code></pre>
</div>
</div>
<!-- 2. Create a namespace -->
<div class="quickstart-card">
<div class="flex items-center gap-3 mb-3">
<div class="flex-shrink-0 w-7 h-7 rounded-full bg-accent/10 border border-accent/30 flex items-center justify-center">
<span class="text-accent font-mono font-bold text-xs">2</span>
</div>
<h3 class="text-base font-semibold text-navy">Create a namespace</h3>
</div>
<div class="code-block">
<pre class="font-mono text-sm leading-relaxed"><code>curl -X POST http://localhost:3000/v1/namespaces \
-H <span class="text-green-400">"Content-Type: application/json"</span> \
-d <span class="text-green-400">'{<span class="text-blue-400">"dimensions"</span>: <span class="text-orange-400">768</span>}'</span>
<span class="text-gray-500"># Response includes "name": "<uuid>" — save it!</span></code></pre>
</div>
</div>
<!-- 3. Upsert -->
<div class="quickstart-card">
<div class="flex items-center gap-3 mb-3">
<div class="flex-shrink-0 w-7 h-7 rounded-full bg-accent/10 border border-accent/30 flex items-center justify-center">
<span class="text-accent font-mono font-bold text-xs">3</span>
</div>
<h3 class="text-base font-semibold text-navy">Upsert</h3>
</div>
<div class="code-block">
<pre class="font-mono text-sm leading-relaxed"><code>curl -X POST http://localhost:3000/v1/namespaces/<span class="text-yellow-400"><namespace-uuid></span>/vectors \
-H <span class="text-green-400">"Content-Type: application/json"</span> \
-d <span class="text-green-400">'{
<span class="text-blue-400">"vectors"</span>: [
{
<span class="text-blue-400">"id"</span>: <span class="text-green-400">"vec-1"</span>,
<span class="text-blue-400">"values"</span>: [<span class="text-orange-400">0.1</span>, <span class="text-orange-400">0.2</span>, <span class="text-orange-400">0.3</span>, <span class="text-gray-500">"..."</span>],
<span class="text-blue-400">"attributes"</span>: {
<span class="text-blue-400">"category"</span>: <span class="text-green-400">"science"</span>,
<span class="text-blue-400">"year"</span>: <span class="text-orange-400">2024</span>
}
}
]
}'</span></code></pre>
</div>
</div>
<!-- 4. Query -->
<div class="quickstart-card">
<div class="flex items-center gap-3 mb-3">
<div class="flex-shrink-0 w-7 h-7 rounded-full bg-accent/10 border border-accent/30 flex items-center justify-center">
<span class="text-accent font-mono font-bold text-xs">4</span>
</div>
<h3 class="text-base font-semibold text-navy">Query</h3>
</div>
<div class="code-block">
<pre class="font-mono text-sm leading-relaxed"><code>curl -X POST http://localhost:3000/v1/namespaces/<span class="text-yellow-400"><namespace-uuid></span>/query \
-H <span class="text-green-400">"Content-Type: application/json"</span> \
-d <span class="text-green-400">'{
<span class="text-blue-400">"vector"</span>: [<span class="text-orange-400">0.1</span>, <span class="text-orange-400">0.2</span>, <span class="text-orange-400">0.3</span>, <span class="text-gray-500">"..."</span>],
<span class="text-blue-400">"top_k"</span>: <span class="text-orange-400">10</span>,
<span class="text-blue-400">"filters"</span>: {
<span class="text-blue-400">"op"</span>: <span class="text-green-400">"And"</span>,
<span class="text-blue-400">"conditions"</span>: [
{<span class="text-blue-400">"op"</span>: <span class="text-green-400">"Eq"</span>, <span class="text-blue-400">"field"</span>: <span class="text-green-400">"category"</span>, <span class="text-blue-400">"value"</span>: <span class="text-green-400">"science"</span>},
{<span class="text-blue-400">"op"</span>: <span class="text-green-400">"Gte"</span>, <span class="text-blue-400">"field"</span>: <span class="text-green-400">"year"</span>, <span class="text-blue-400">"value"</span>: <span class="text-orange-400">2020</span>}
]
},
<span class="text-blue-400">"include_attributes"</span>: <span class="text-orange-400">true</span>
}'</span></code></pre>
</div>
</div>
</div>
</div>
</section>
<!-- ========== ARCHITECTURE ========== -->
<section id="architecture" class="py-16 md:py-20 border-t border-black/10">
<div class="max-w-5xl mx-auto px-4 sm:px-6 lg:px-8">
<h2 class="font-mono font-bold text-2xl sm:text-3xl tracking-tight text-navy mb-2">Architecture</h2>
<p class="text-sm text-gray-500 mb-8">Stateless nodes. S3 is the single source of truth.</p>
<!-- Diagram (centered SVG) -->
<div class="mb-10">
<img src="assets/architecture.svg" alt="Zeppelin architecture diagram" class="mx-auto max-w-full">
</div>
<!-- Row 1: Three fieldset-cards (Write / Read / Compaction) -->
<div class="grid md:grid-cols-3 gap-6 mb-6">
<div class="fieldset-card">
<span class="fieldset-legend">Write Path</span>
<ul class="arch-list pt-2">
<li>Append-only WAL fragments to S3</li>
<li>OCC via S3 ETags on central Manifest</li>
<li>Monotonic fencing tokens prevent zombie writers</li>
<li>Deterministic sequence numbers (no clock skew)</li>
</ul>
</div>
<div class="fieldset-card">
<span class="fieldset-legend">Read Path</span>
<ul class="arch-list pt-2">
<li>Merges fresh WAL data + optimized segments</li>
<li>Strong: parallel scan of WAL + indexed segments</li>
<li>Eventual: fast-path over segments only</li>
<li>Singleflight coalesces concurrent manifest fetches</li>
</ul>
</div>
<div class="fieldset-card">
<span class="fieldset-legend">Compaction</span>
<ul class="arch-list pt-2">
<li>IVF-Flat / Hierarchical ANN with k-means + quantization</li>
<li>BM25 inverted indexes for full-text search</li>
<li>RoaringBitmap indexes for sub-ms attribute filtering</li>
<li>Runs in background, never blocks writes</li>
</ul>
</div>
</div>
<!-- Row 2: Two fieldset-cards (Benefits / Tradeoffs) -->
<div class="grid md:grid-cols-2 gap-6">
<div class="fieldset-card">
<span class="fieldset-legend">Benefits</span>
<ul class="arch-list pt-2">
<li><strong>Instant elasticity:</strong> stateless nodes, no resharding, 1→100 in seconds</li>
<li><strong>Zero-state recovery:</strong> no replication lag, Manifest is source of truth</li>
<li><strong>Storage economics:</strong> S3 rates vs. NVMe; scale compute independently</li>
<li><strong>Decoupled read/write:</strong> WAL available immediately; indexing is background</li>
</ul>
</div>
<div class="fieldset-card">
<span class="fieldset-legend">Tradeoffs</span>
<ul class="arch-list pt-2">
<li><strong>S3 latency floor:</strong> baseline 20-50ms; caching helps but not sub-5ms</li>
<li><strong>Consistency lag:</strong> ManifestCache TTL ~500ms across nodes</li>
<li><strong>Compaction health:</strong> latency degrades if WAL fragments grow unchecked</li>
<li><strong>Cold-start:</strong> first queries populate LRU cache from S3</li>
</ul>
</div>
</div>
</div>
</section>
<!-- ========== ABOUT ========== -->
<section id="about" class="py-16 md:py-20 border-t border-black/10">
<div class="max-w-5xl mx-auto px-4 sm:px-6 lg:px-8">
<h2 class="font-mono font-bold text-2xl sm:text-3xl tracking-tight text-navy mb-10">About</h2>
<div class="grid md:grid-cols-7 gap-10 md:gap-12">
<!-- Left: Founder card (3 cols) -->
<div class="md:col-span-3">
<div class="about-founder-card">
<img
src="https://www.infoq.com/images/profiles/JTOSL81eRhXFyUdERcRf21Wcr0zcMl16.jpg"
alt="Anup Ghatage"
class="w-24 h-24 rounded-full object-cover border-2 border-black/10 mb-5"
>
<h3 class="text-lg font-semibold text-navy">Anup Ghatage</h3>
<p class="text-sm text-accent font-medium mb-4">Founder, Zeppelin</p>
<ul class="about-credentials">
<li>14 years in databases and distributed storage</li>
<li>Principal SWE, Salesforce</li>
<li>Apache BookKeeper committer</li>
<li>SAP HANA · Cisco WebEx · Sybase ASE</li>
<li>7 patents · 10+ Hackathon wins</li>
<li>Carnegie Mellon · University of Pune (CS)</li>
</ul>
<div class="flex items-center gap-3 mt-5 pt-5 border-t border-black/10">
<a href="https://x.com/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-navy transition-colors" aria-label="X (Twitter)">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z"/></svg>
</a>
<a href="https://www.linkedin.com/in/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-navy transition-colors" aria-label="LinkedIn">
<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24"><path d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a2.062 2.062 0 01-2.063-2.065 2.064 2.064 0 112.063 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>
</a>
</div>
</div>
</div>
<!-- Right: Narrative (4 cols) -->
<div class="md:col-span-4 space-y-5 text-[15px] leading-relaxed text-gray-600">
<p class="text-lg font-medium text-navy leading-snug">
Your vectors belong in <em>your</em> object storage, not someone else's proprietary system. Search should cost what storage costs.
</p>
<p>
I've spent 14 years inside distributed storage systems: Sybase ASE internals in C/C++, Cisco WebEx, SAP HANA, then building Hyperforce at Salesforce. One lesson kept coming back.
</p>
<p>
In an agent-first future, agents won't care about latency the way web apps do. They'll care about <strong>cost</strong> and <strong>simplicity</strong>. If your vectors live in S3, you pay S3 prices. Nodes become stateless. You scale by adding buckets, not by babysitting clusters.
</p>
<p>
On February 10th, 2026, I started building Zeppelin at the Claude Code Hackathon. The seed fund was $500 in Claude credits. I directed the architecture. Every line of Rust was written by Claude Opus 4.6. One human, one AI, no team, no investors.
</p>
<p>
The result: <span class="font-mono text-navy font-medium">451 tests</span>, <span class="font-mono text-navy font-medium">26 TLA+ specs</span>, <span class="font-mono text-navy font-medium">1.2M+ states explored</span>, and an engine released under <span class="font-mono text-navy font-medium">Apache-2.0</span>.
</p>
<p>
Zeppelin is open source because infrastructure should be. No vendor lock-in, no opaque pricing, no proprietary formats. Your data stays in your buckets.
</p>
<p class="text-sm text-gray-400 italic pt-2">
Smarter architecture beats faster clusters.
</p>
</div>
</div>
</div>
</section>
</main>
<!-- ========== FOOTER ========== -->
<footer class="border-t border-black/10 bg-surface">
<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-16">
<div class="grid grid-cols-2 md:grid-cols-4 gap-8">
<!-- Brand -->
<div class="col-span-2 md:col-span-1">
<a href="#" class="flex items-center gap-2 mb-4">
<img src="assets/icon.svg" alt="Zeppelin logo" class="h-16 w-16">
<span class="text-2xl font-semibold text-navy">Zeppelin</span>
</a>
<p class="text-sm text-gray-500">S3-native vector search engine.</p>
<p class="text-sm text-gray-500 mt-2">Built with Rust.</p>
<div class="flex items-center gap-3 mt-4">
<a href="https://x.com/ghatageanup" target="_blank" rel="noopener" class="text-gray-400 hover:text-navy transition-colors" aria-label="X (Twitter)">
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</a>
<a href="https://github.com/zepdb/zeppelin" target="_blank" rel="noopener" class="text-gray-400 hover:text-navy transition-colors" aria-label="GitHub">
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<!-- Product -->
<div>
<h4 class="text-sm font-semibold text-navy mb-4">Product</h4>
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