anthropic/claude-fable-5.2Claude Fable 5.2 is Anthropic’s proprietary AI model, released Nov 9, 2026. It scores 173 on the Epoch Capabilities Index, costs $8/M input and $40/M output tokens, and handles a 1M-token context window. Its strongest use case is agentic & tools, where it ranks in the 97th percentile of the models Model Beat tracks.
Claude Fable 5.2 is Anthropic's most capable model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning, and vision.
Scores on standardized evaluations. Higher is better — and rank shows where Claude Fable 5.2 lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Common-sense trick questions
Factual accuracy & hallucination
Olympiad-qualifier math
Multi-step agentic tasks
Claude Fable 5.2 is Anthropic's most capable model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning, and vision.
Claude Fable 5.2 is an AI model developed by Anthropic, part of the Claude family, released Nov 9, 2026.
Claude Fable 5.2's list price from Anthropic is $8 per million input tokens and $40 per million output tokens.
Claude Fable 5.2 supports a context window of up to 1M tokens.
On standardized evaluations tracked by Epoch AI, Claude Fable 5.2 scores 94.9% on SimpleBench, 94.0% on SimpleQA Verified, 80.1% on APEX.
Claude Fable 5.2 is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Nov 12, 2026.