diff --git a/src/selfhost/ai.ts b/src/selfhost/ai.ts
index 88254df71..8aa076351 100644
--- a/src/selfhost/ai.ts
+++ b/src/selfhost/ai.ts
@@ -609,6 +609,25 @@ function buildAiUsage(fields: {
   return usage;
 }
 
+/** Classify an AI_EMBED/AI_VISION/AI_ADVISORY base URL into `createOpenAiCompatibleAi`'s existing
+ *  `providerName` set (#ai-usage-provider-attribution): unlike the main review chain (an explicit
+ *  `AI_PROVIDER` selector), these auxiliary bindings accept ANY openai-compatible endpoint with no provider
+ *  knob of their own, so the configured base URL is the only signal available for attributing `ai_usage_events`
+ *  rows to a real provider instead of leaving them permanently unattributed. Recognizes the bundled
+ *  docker-compose `ollama` service and OpenAI's own endpoint; anything else (vLLM, LM Studio, a custom
+ *  hostname) is the honest generic "openai-compatible" bucket rather than a guessed, possibly-wrong label. */
+export function providerNameFromBaseUrl(baseUrl: string | undefined): "ollama" | "openai" | "openai-compatible" {
+  let hostname = "";
+  try {
+    hostname = baseUrl ? new URL(baseUrl).hostname : "";
+  } catch {
+    return "openai-compatible";
+  }
+  if (hostname === "api.openai.com") return "openai";
+  if (hostname.includes("ollama")) return "ollama";
+  return "openai-compatible";
+}
+
 const INPUT_TOKEN_KEYS = ["input_tokens", "inputTokens", "prompt_tokens", "promptTokens"] as const;
 const OUTPUT_TOKEN_KEYS = ["output_tokens", "outputTokens", "completion_tokens", "completionTokens"] as const;
 const TOTAL_TOKEN_KEYS = ["total_tokens", "totalTokens"] as const;
diff --git a/src/server.ts b/src/server.ts
index 754c88547..a263373cf 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -20,6 +20,7 @@ import {
   createSelfHostAi,
   isAiProviderHealthy,
   markAiProviderUnhealthyAtBoot,
+  providerNameFromBaseUrl,
   resolveAiReviewerPlan,
   resolveProviderNames,
   resolveRequiredCliProviders,
@@ -471,6 +472,7 @@ async function main(): Promise<void> {
         baseUrl: process.env.AI_EMBED_BASE_URL,
         apiKey: process.env.AI_EMBED_API_KEY ?? process.env.OPENAI_API_KEY,
         embedModel: process.env.AI_EMBED_MODEL,
+        providerName: providerNameFromBaseUrl(process.env.AI_EMBED_BASE_URL),
       })
     : undefined;
   if (embedAi)
@@ -491,6 +493,7 @@ async function main(): Promise<void> {
         baseUrl: process.env.AI_VISION_BASE_URL,
         apiKey: process.env.AI_VISION_API_KEY ?? process.env.OPENAI_API_KEY,
         model: process.env.AI_VISION_MODEL,
+        providerName: providerNameFromBaseUrl(process.env.AI_VISION_BASE_URL),
       })
     : undefined;
   if (visionAi)
@@ -513,6 +516,7 @@ async function main(): Promise<void> {
         baseUrl: process.env.AI_ADVISORY_BASE_URL,
         apiKey: process.env.AI_ADVISORY_API_KEY,
         model: process.env.AI_ADVISORY_MODEL,
+        providerName: providerNameFromBaseUrl(process.env.AI_ADVISORY_BASE_URL),
       })
     : undefined;
   if (advisoryAi)
diff --git a/test/unit/selfhost-ai.test.ts b/test/unit/selfhost-ai.test.ts
index befaaed2a..2d325c85d 100644
--- a/test/unit/selfhost-ai.test.ts
+++ b/test/unit/selfhost-ai.test.ts
@@ -2,7 +2,7 @@ import { chmodSync, mkdirSync, mkdtempSync, readFileSync, writeFileSync } from "
 import { tmpdir } from "node:os";
 import { delimiter, join } from "node:path";
 import { afterEach, describe, expect, it, vi } from "vitest";
-import { assertNoLegacySharedAiEnv, buildProvider, claudeErrorStatus, codexErrorFromStdout, createAnthropicAi, createChainAi, createClaudeCodeAi, createCodexAi, createOpenAiCompatibleAi, createSelfHostAi, extractCliText, extractCliUsage, isAiProviderHealthy, markAiProviderUnhealthyAtBoot, resetAiProviderCircuitBreakerForTest, resetAiProviderHealthForTest, resolveAiReviewerPlan, resolveClaudeCliTimeoutMs, resolveClaudeFirstOutputTimeoutMs, resolveCodexAuthPath, resolveCodexCliTimeoutMs, resolveCodexEffort, resolveCodexFirstOutputTimeoutMs, resolveEffort, resolveModel, resolveProviderNames, resolveRequiredCliProviders, resolveSubscriptionCliPath, redactSecrets, routeProviders, shouldMarkAiProviderUnhealthyAtBoot, subscriptionCliEnv, withAdvisoryAiEnv, __selfHostAiInternals } from "../../src/selfhost/ai";
+import { assertNoLegacySharedAiEnv, buildProvider, claudeErrorStatus, codexErrorFromStdout, createAnthropicAi, createChainAi, createClaudeCodeAi, createCodexAi, createOpenAiCompatibleAi, createSelfHostAi, extractCliText, extractCliUsage, isAiProviderHealthy, markAiProviderUnhealthyAtBoot, providerNameFromBaseUrl, resetAiProviderCircuitBreakerForTest, resetAiProviderHealthForTest, resolveAiReviewerPlan, resolveClaudeCliTimeoutMs, resolveClaudeFirstOutputTimeoutMs, resolveCodexAuthPath, resolveCodexCliTimeoutMs, resolveCodexEffort, resolveCodexFirstOutputTimeoutMs, resolveEffort, resolveModel, resolveProviderNames, resolveRequiredCliProviders, resolveSubscriptionCliPath, redactSecrets, routeProviders, shouldMarkAiProviderUnhealthyAtBoot, subscriptionCliEnv, withAdvisoryAiEnv, __selfHostAiInternals } from "../../src/selfhost/ai";
 import { labelSelfHostReviewerModel, labelSelfHostReviewerModels } from "../../src/selfhost/ai-config";
 import { renderMetrics, resetMetrics } from "../../src/selfhost/metrics";
 
@@ -215,6 +215,15 @@ describe("createOpenAiCompatibleAi (#979)", () => {
     expect(out).toEqual({ data: [[0.1]], usage: { model: "bge-m3", inputTokens: 7, totalTokens: 7 } });
   });
 
+  it("providerNameFromBaseUrl classifies the bundled Ollama service, OpenAI's endpoint, and any other host generically (#ai-usage-provider-attribution)", () => {
+    expect(providerNameFromBaseUrl("http://ollama:11434/v1")).toBe("ollama");
+    expect(providerNameFromBaseUrl("https://my-ollama-box.internal:11434/v1")).toBe("ollama");
+    expect(providerNameFromBaseUrl("https://api.openai.com/v1")).toBe("openai");
+    expect(providerNameFromBaseUrl("https://my-vllm-box.internal/v1")).toBe("openai-compatible");
+    expect(providerNameFromBaseUrl(undefined)).toBe("openai-compatible");
+    expect(providerNameFromBaseUrl("not a url")).toBe("openai-compatible");
+  });
+
   it("buildAiUsage omits every undefined field and includes every defined one (direct unit test — costUsd/effort/an-undefined-model are never both exercised through the 3 real call sites)", () => {
     const { buildAiUsage } = __selfHostAiInternals;
     expect(buildAiUsage({})).toEqual({});