GPT-6.1 Sol officially launches on B.AI, with API and Web Chat simultaneously available

The B.AI platform has announced the official launch of OpenAI GPT-6.1 Sol, enabling simultaneous testing via both API and Web Chat interfaces. As an upgraded variant of GPT-6 Sol, the model is tailored for complex software engineering, computer operations, and professional workflows. Officially positioned to approach GPT-6 Astra in agent programming, computer use, and specialized tasks, it features standard input/output token pricing at approximately one-fifth that of Astra. The model supports a 1.05M-token extended context window and generates up to 128K tokens of output, provides five adjustable reasoning intensity tiers, and supports prompt caching alongside Multi-agent delegation through the Responses API (Beta). Starting today, developers and users can directly integrate GPT-6.1 Sol via the B.AI platform; visit chat.b.ai/chat to begin your experience.