B. AI Responses API Major Upgrade, Fully Compatible with Upstream Standard Protocols
B.AI announced a major upgrade to its Responses API, now fully compatible with upstream standard protocols. Existing models on the platform can be uniformly accessed via the /v1/responses endpoint, provided the upstream supports the Responses API. Furthermore, any new models from already-integrated vendors added by B.AI will automatically achieve seamless compatibility within the Codex client without requiring additional configuration from developers. This update expands support in the official API full-access tier to include the MiMo, Qwen, and Hunyuan model series, while the Mix and OL Station custom-provider discounted tier now adds support for the OpenAI, Gemini, and Grok model series. By simply completing a minimal configuration of the API Key and Base URL, developers can seamlessly integrate the capabilities of major models into their daily workflows.
