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1.6.5-opus-5

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✨ Features

  • Anthropic Default Fallback Routing — Added support for Anthropic’s fallbacks: "default" preset, preserving it through the Bifrost round-trip and injecting the server-side-fallback-2026-07-01 beta header for default-routing requests.
  • Mid-Conversation Tool Changes — Added support for the mid-conversation-tool-changes-2026-07-01 beta header, enabled for Anthropic and Bedrock Mantle.

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🐞 Fixed

  • Opus 5 Compatibility — Added Opus 5 detection to the Anthropic provider so it inherits Opus 4.8’s request surface: budget_tokens, temperature, top_p, and top_k are stripped, and native effort, fast mode, and mid-conversation system messages are enabled.
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1.7.4
  • feat: added support for Anthropic’s fallbacks: "default" preset via the new AnthropicFallbacks wrapper type, preserving it through request round-trips and injecting the server-side-fallback-2026-07-01 beta header for default routing
    AnthropicMessageRequest.Fallbacks changed from []AnthropicFallbackEntry to *AnthropicFallbacks. Code constructing this struct directly must wrap entries as &AnthropicFallbacks{Entries: ...}.
  • feat: added the mid-conversation-tool-changes-2026-07-01 beta header and MidConvToolChanges feature flag for Anthropic and Bedrock Mantle
  • fix: added Opus 5 support to the Anthropic provider via IsOpus5Plus, inheriting the Opus 4.8 request surface for unsupported sampling params, native effort, fast mode, and mid-conversation system messages
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1.5.4
  • chore: upgraded core to v1.7.4
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0.1.30
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.6.8
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.5.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.6.4
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.6.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.5.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.0.12
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.4.3
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.0.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.5.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4
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1.5.31
  • chore: upgraded core to v1.7.4 and framework to v1.5.4