anthropic: Pass beta header for speed in BYOK (#57707) (cherry-pick to preview)#57711
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We were sending the `speed` field set to `"standard"` for BYOK Anthropic but without the corresponding beta header. leading the requests to fail with "invalid request format to Anthropic's API: speed: Extra inputs are not permitted". This makes sure to attach the beta header whenever the `speed` parameter is used. Release Notes: - Fixed "speed: Extra inputs are not permitted" errors for Opus 4.6 and 4.7 in the Anthropic API provider.
This was referenced May 27, 2026
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Cherry-pick of #57707 to preview
We were sending the
speedfield set to"standard"for BYOK Anthropicbut without the corresponding beta header. leading the requests to fail
with "invalid request format to Anthropic's API: speed: Extra inputs are
not permitted".
This makes sure to attach the beta header whenever the
speedparameteris used.
Release Notes:
4.7 in the Anthropic API provider.