Hacker News · AI· ttul·· 9 hours agoSelectedAI score89
Anthropic Unveils Claude Fable 5.2 for Intensive Reasoning and Long-Horizon Agents
Claude Fable 5.2
AI guide
Anthropic's official documentation now features Claude Fable 5.2, an AI model built for intensive reasoning and long-horizon agentic workflows. It offers a 1M context window and a maximum output of 128K tokens, with input and output pricing set at $8 and $40 per million tokens, respectively, and a knowledge cutoff of June 2026.
Why it matters
The documentation highlights key invocation constraints for the reasoning model, such as mandatory adaptive thinking by default and restrictions on forced tool calls.
Source:Hacker News · AI · platform.claude.com