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v0.6.4 Release Notes
This release focuses on fixing critical streaming issues with Responses API models, improving model routing for new model families, enhancing cache performance and request latency, and updating CI/CD dependencies. The proxy now correctly handles function calling in streaming responses for models like muse-spark, grok, and gpt-5 variants, and uses prefix-based model classification to automatically route current and future models to their correct endpoints.
Bug Fixes
- Fix function_call handling in Responses API streaming for models like muse-spark-1.2-contributor, grok-4.6, and gpt-5.6-luna — streaming requests now properly emit tool_use blocks instead of dropping them and returning text + end_turn prematurely
- Switch model endpoint classification from hardcoded model IDs to prefix matching for Responses and Gemini families — newer models (grok-, muse-spark-, gemini-3.7-flash, gpt-5.6-*) now route to correct endpoints automatically
- Accept all known providers (including openrouter, aws-bedrock) in model_overrides and model_family_overrides config — validation now uses canonical provider list from internal/config to prevent drift
- Fix update command to stage downloads in install directory — prevents cross-filesystem rename failures (EXDEV) on tmpfs mounts and surfaces permission errors before downloading
Improvements
- Improve cache hit rates and reduce request latency with bounded latency and TTFT (Time To First Token) metrics
- Preserve legacy tool result output format for backward compatibility
Documentation
- Remove stale
uicommand reference; document actualstartandstart -bcommands with dashboard URL (http://127.0.0.1:3445) - Clarify endpoint family classification in howto-add-model.md — note that adding models may require code changes for new families
Chores
- Bump docker/metadata-action from 5.10.0 to 6.2.0
- Bump modernc.org/sqlite from 1.56.0 to 1.57.0
- Bump docker/login-action from 3.7.0 to 4.6.0
- Bump actions/checkout from v4 to v7
- Bump signpath/github-action-submit-signing-request from 1.3 to 2.3
- Bump docker/setup-qemu-action from 3.7.0 to 4.2.0
- Bump actions/upload-artifact from 4.6.2 to 7.0.1
- Bump actions/download-artifact from 4.3.0 to 8.0.1