Release Proxima v5.5.0 · Zen4-bit/Proxima

What's New

Dynamic Model Discovery — Discover available ChatGPT and Gemini models from your logged-in account and select them across Proxima’s supported interfaces.
MCP Model Discovery Tool — Added list_available_models and updated proxima://models to expose model information, availability status, and usage instructions.
Gemini Thinking Controls — Choose Default, Low, Medium, or High thinking levels where supported, through MCP, REST API, Python/JavaScript SDKs, CLI, and chat interfaces.
Request Cancellation — Stop active requests using the new POST /v1/cancel endpoint and integrated cancellation controls.
Live Chat & Battle Mode — Updated model selectors, thinking controls, and side-by-side multi-model comparisons.
JavaScript SDK Packaging — Added native ES Module and CommonJS import support with a dedicated SDK guide.

Improved ChatGPT and Gemini session connectivity, response streaming, and multi-turn conversation handling.
Improved stalled-request handling, expired-conversation recovery, and bounded Auto-mode fallback on rate limits.
Added automatic REST port discovery for clients when the default port is occupied.
Corrected JavaScript and Python SDK URL handling to prevent duplicated /v1 paths.
Improved Python interpreter health checks during Agent setup.
Improved DuckDuckGo error reporting for blocked or failed search requests.
Strengthened secret scanning, local request validation, and BYOK key management.
Improved WebSocket fallback behavior in the live chat widget.

Added a v5.0 → v5.5 migration guide and expanded SDK usage examples.
Updated API, MCP, CLI, architecture, and build documentation.
Expanded regression coverage with six integration test suites and one unit test suite.

See the migration guide for updated model discovery, thinking controls, SDK imports, and automatic port discovery.