Claude Code 2.1.321: Fable 5.2 vs 5.1, 20% Cheaper
Claude Code 2.1.321, published on GitHub on 9 November 2026, makes Claude Fable 5.2 ( claude-fable-5-2 ) the default Fable model, priced at $8 per million input tokens and $40 per million output tokens with a 1M-token context window ( release notes ). Fable 5.1 cost $10 and $50 for the same units ( Classmethod ), so the new model is 20% cheaper on input, output and cache reads. The verdict: if…
Claude Code 2.1.321, released on GitHub on 9 November 2026, introduces Fable 5.2 as the default Fable model, reducing its unit prices to $8 per million input tokens, $40 per million output tokens, and $0.20 per million cache reads, marking a 20% decrease across the board compared to Fable 5.1's prices of $10, $50, and $0.25, respectively.
Anthropic claims that Fable 5.2 generates output up to 30% faster than its predecessor, and the upgrade is largely automatic, with only a change in model selection required. While Fable 5.2 outperforms Fable 5.1 in coding benchmarks, Anthropic still recommends Opus 5.5 as the default model for most coding tasks due to its superior performance.
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