Anthropic releases Fable 5.2 with 30% speed improvement and lower pricing

Claude Devs announced that Fable 5.2 is now available on Claude Platform and Claude Code, up to 30% faster than Fable 5.1, priced at $8/$40 per 1M tokens, down from the previous $10/$50. To prevent distillation, preserved thinking now covers all API accounts on Fable 5.2; editing prior context may return a 400, and the official recommendation is to use compaction, context editing, or a mid-conversation system message instead—Claude Code, Managed Agents, and the Agent SDK handle this automatically. Fable 5.2 also offers a fast mode with 2.5x output speed at double the price; set "speed": "fast" in the API, and in Claude Code it can be enabled in the model selector.