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Nov 9, 2026

Anthropic releases Claude Fable 5.2 and Mythos 5.2 with 20% API cost reduction

Anthropic launched Claude Fable 5.2 and Mythos 5.2, achieving record benchmark scores including 41% completion of real freelance jobs, with tokens generated up to 30% faster and API costs cut by 20% versus the 5.1 generation.

Nov 9, 2026·5 sources

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Top claims

▪Anthropic priced Claude Fable 5.2 and Claude Mythos 5.2 at $8 per million uncached input tokens and $40 per million output tokens, representing a 20% cost reduction over Fable 5.1 and Mythos 5.1, their predecessors
▪Anthropic's Batch API pricing for Fable 5.2 and Mythos 5.2 halves input and output rates to $4 and $20 per million tokens, respectively
▪Anthropic made Claude Fable 5.2 available on paid Claude plans, Claude Code, the Claude Platform, Amazon Web Services, Google Cloud, and Microsoft Azure

Topics

Claude Fable 5.1 OpenAI Frontier models AI benchmarks Claude Opus 4.8 AI coding Claude Code Gemini 4 Argon AI cybersecurity AI agents AI safeguards GPT-6 Astra AI Models

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