[Anthropic Claude Fable 5.2 Launched on B.AI, Upgrading Long Context and Agent Capabilities] According to TechFlow, on November 10th, the B.AI platform announced the official launch of Anthropic Claude Fable 5.2, with simultaneous API and Web Chat access. This model is designed for complex inference, software engineering, and long-cycle agent workflows, always employing adaptive thinking, and featuring a 1M token super-large context window and up to 128K output tokens. According to the Artificial Analysis Intelligence Index v5 rating, Claude Fable 5.2 topped the leaderboard with a score of 65 on the highest configuration, far exceeding the median of 40 points for similar models. The model also strikes a balance between performance and cost: generation speed is up to 30% faster than Fable 5.1, with a standard price of $8.00 per million input tokens and $40.00 per million output tokens, and supports Prompt caching to accommodate both high-intensity inference and high-frequency call requirements. Welcome to chat.b.ai/chat to experience it now.