fix(ai-sdk): Restore prompt cache metrics#1825
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Luca Forstner (lforst) merged 7 commits intomainfrom Apr 15, 2026
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Abhijeet Prasad (AbhiPrasad)
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…ession # Conflicts: # e2e/scenarios/ai-sdk-instrumentation/pnpm-lock.yaml # e2e/scenarios/ai-sdk-instrumentation/scenario.ai-sdk-v5.mjs # e2e/scenarios/ai-sdk-instrumentation/scenario.ai-sdk-v5.ts # e2e/scenarios/ai-sdk-instrumentation/scenario.mjs # e2e/scenarios/ai-sdk-instrumentation/scenario.ts
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and publish to npm yourself or [setup this action to publish automatically](https://github.com/changesets/action#with-publishing). If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## braintrust@3.9.0 ### Minor Changes - [#1824](#1824) [`c980e07`](c980e07) Thanks [@lforst](https://github.com/lforst)! - feat: Add reranking instrumentation for AI SDK and Openrouter SDK - [#1738](#1738) [`25d25d5`](25d25d5) Thanks [@AbhiPrasad](https://github.com/AbhiPrasad)! - - feat: Add instrumentation for @huggingface/inference ([#1807](#1807)) - feat: Add cohere-ai instrumentation ([#1781](#1781)) - fix: Capture anthropic server tool use inputs for streaming APIs ([#1776](#1776)) - feat: Capture grounding metadata for Google GenAI ([#1773](#1773)) - fix(claude-agent-sdk): Don't drop tool spans for spawning subagents ([#1779](#1779)) - feat: Track server tool use metrics for anthropic SDK ([#1772](#1772)) - fix(openai): Collect logprob and refulsals output for streaming APIs ([#1774](#1774)) - perf: Remove zod from deepCopyEvent ([#1796](#1796)) - fix(test): Double timeout for slow OpenAI API tests ([#1794](#1794)) - feat(claude-agent-sdk): Improve task lifecycle and lifecycle details ([#1777](#1777)) - ci(deps): bump actions/github-script from 8.0.0 to 9.0.0 ([#1783](#1783)) - ci(deps): bump docker/setup-buildx-action from 3.12.0 to 4.0.0 ([#1782](#1782)) - chore: Don't use environment (ie. github deployments) for canary tests ([#1775](#1775)) - chore: Make dependabot less annoying ([#1778](#1778)) - fix(auto-instrumentation): Upgrade @apm-js-collab/code-transformer to v0.12.0 ([#1708](#1708)) - fix(auto-instrumentation): Use sync channel for AI SDK CJS streamText/streamObject in v4+ ([#1768](#1768)) - fix: Give AI SDK top-level api spans type function ([#1769](#1769)) - [#1814](#1814) [`d9b9923`](d9b9923) Thanks [@lforst](https://github.com/lforst)! - - feat: Add per-input trialCount support to Eval() - [#1821](#1821) [`1b5de11`](1b5de11) Thanks [@lforst](https://github.com/lforst)! - feat: Instrument Google GenAI embedContent for text ### Patch Changes - [#1825](#1825) [`f389036`](f389036) Thanks [@lforst](https://github.com/lforst)! - fix(ai-sdk): Restore prompt cache metrics - [#1813](#1813) [`2434a0e`](2434a0e) Thanks [@lforst](https://github.com/lforst)! - fix(openai-agents): End child spans on trace end - [#1836](#1836) [`5581357`](5581357) Thanks [@stretpjc](https://github.com/stretpjc)! - feat: Add x-bt-use-gateway header to allowed CORS headers --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Luca Forstner <luca.forstner@gmail.com>
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resolves https://linear.app/braintrustdata/issue/BT-4755
resolves https://linear.app/braintrustdata/issue/BT-4745