feat: Fix token metrics with AI SDK middleware - #2497
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Luca Forstner (lforst)
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from Abhijeet Prasad (AbhiPrasad)
September 18, 2026 12:48
Abhijeet Prasad (AbhiPrasad)
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Sep 18, 2026
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closes SDK-386
BraintrustMiddleware, including cache and reasoning tokens.wrapAISDK(model)support for AI SDK 5–7, allowing individual models to be traced alongside the existing SDK-level wrapper. Capture generation and streaming calls, errors, cancellation, and time to first token without duplicating provider spans.