Claude Fable 5.2 Launches on B.AI with 1M Context and 30% Faster Generation

Key Info

B.AI now offers Anthropic's Claude Fable 5.2 via its API and Web Chat, targeting complex reasoning, software engineering, and long-running agent workflows.

Highlights

• Always-on adaptive thinking with a 1M token context window and up to 128K output tokens
• Generation speeds up to 30% faster than Fable 5.1
• Standard pricing: $8.00 per 1M input tokens and $40.00 per 1M output tokens, with prompt caching support
• Suited to repo-level engineering, deep research, and high-difficulty coding tasks