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fix(mistral): map cached token counts from Mistral usage response - #14889
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lgrammel merged 2 commits intoMay 4, 2026
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Mistral API returns cached token counts via num_cached_tokens, prompt_tokens_details.cached_tokens, and prompt_token_details.cached_tokens. These fields were stripped by the Zod schema and never mapped in convertMistralUsage, causing all prompt tokens to be reported as noCacheTokens. This adds the fields to the schema and computes cacheRead/noCache correctly. Closes vercel#14382
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…4889) ## Summary - Mistral's API returns cached token counts via `num_cached_tokens`, `prompt_tokens_details.cached_tokens`, and `prompt_token_details.cached_tokens` - These fields were not included in `mistralUsageSchema` (stripped by Zod) and not mapped in `convertMistralUsage` - All prompt tokens were incorrectly reported as `noCacheTokens` - Adds the fields to the schema and computes `cacheRead`/`noCache` correctly ## Test plan - [x] Unit test with cached token fields in usage response - [x] Verify noCache = promptTokens - cacheReadTokens - [x] Verify cacheRead is populated when cached tokens present - [x] Verify backward compatibility when cached fields are absent ## Related Issues Closes #14382 Supersedes #14419 Co-authored-by: Lars Grammel <[email protected]>
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✅ Backport PR created: #14947 |
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…sponse (#14947) This is an automated backport of #14889 to the release-v6.0 branch. FYI @Christian-Sidak Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Lars Grammel <[email protected]>
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…4889) ## Summary - Mistral's API returns cached token counts via `num_cached_tokens`, `prompt_tokens_details.cached_tokens`, and `prompt_token_details.cached_tokens` - These fields were not included in `mistralUsageSchema` (stripped by Zod) and not mapped in `convertMistralUsage` - All prompt tokens were incorrectly reported as `noCacheTokens` - Adds the fields to the schema and computes `cacheRead`/`noCache` correctly ## Test plan - [x] Unit test with cached token fields in usage response - [x] Verify noCache = promptTokens - cacheReadTokens - [x] Verify cacheRead is populated when cached tokens present - [x] Verify backward compatibility when cached fields are absent ## Related Issues Closes #14382 Supersedes #14419 Co-authored-by: Lars Grammel <[email protected]>
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Summary
num_cached_tokens,prompt_tokens_details.cached_tokens, andprompt_token_details.cached_tokensmistralUsageSchema(stripped by Zod) and not mapped inconvertMistralUsagenoCacheTokenscacheRead/noCachecorrectlyTest plan
Related Issues
Closes #14382
Supersedes #14419