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v1.4.543

danielmiessler/Fabricv1.4.543Oct 23, 2026by github-actions[bot]

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Release notes summary

This release fixes Claude requests on the Bedrock gateway and Vertex AI by omitting temperature and top_p for models that reject those parameters. It also centralizes Claude sampling parameter logic so Anthropic and Vertex AI integrations share consistent behavior.

Key Highlights

  • Omitted temperature and top_p for Claude models that reject them on Bedrock gateway and Vertex AI
  • Centralized Claude sampling parameter logic across Anthropic and Vertex AI integrations
  • Preserved per-model restrictions and mutually exclusive sampling parameter handling
  • Moved sampling tests into the shared Anthropic package for consistent coverage
  • Added a changelog entry for the fix

Full Release Notes

## Changes

### PR [#2297](https://github.com/danielmiessler/Fabric/pull/2297) by [pcbeingused333](https://github.com/pcbeingused333) and [ksylvan](https://github.com/ksylvan): fix(claude): omit temperature and top_p for Claude models that reject them on Bedrock gateway and Vertex AI

- Fixed Claude requests by omitting `temperature` and `top_p` for models that reject them on the Bedrock gateway and Vertex AI.
- Centralized Claude sampling parameter logic so it is shared across the Anthropic and Vertex AI integrations.
- Preserved per-model restrictions and the mutually exclusive handling of sampling parameters.
- Moved sampling tests into the shared Anthropic package for consistent coverage.
- Added the corresponding changelog entry for this change.

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