Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.

Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.

Anthropic today introduced its latest models, Claude Fable 5.2 and Claude Mythos 5.2, which have improvements in coding, reasoning, and vision. Anthropic says Fable 5.2 and Mythos 5.2 communicate more clearly than the 5.1 versions, with outputs generated up to 30 percent faster. Fable 5.2 uses fewer tokens than Fable 5.1 on challenging tasks when set to medium effort. The company suggests using Fable and Mythos for "the most ambitious, open-ended technical work." Anthropic recommends starting with Opus 5.5 for most coding and knowledge tasks, then switching to a model like Fable or Mythos that can handle more complex requests, or stepping down to a more affordable model like Sonnet or Haiku 5.5. Benchmarks suggest Fable and Mythos 5.2 outperform Opus 5.5 for computer use, knowledge work, cybersecurity, agentic scientific research, agentic coding, multidisciplinary reasoning, and more. Both use the same underlying model, but the public-facing Fable 5.2 model has cybersecurity and biology safeguards to prevent misuse. Compared to Fable 5.1, Fable 5.2 has approximately 55 percent fewer blocks. Mythos does not have the same limitations as Fable, and it is available through Anthropic's Life Sciences and Cyber Verification Programs as well as through Claude Security on Enterprise plans. Fable 5.2 is available today on all platforms. Subscribers on eligible paid plans have extra Fable usage this week, with one to three Fable resets based on subscription length. Fable is included for up to 50 percent of weekly usage limits for Pro plans and standard seats on the Team plan. A fast mode that speeds up token generation by up to 2.5 times is available on Claude Code, the Claude Platform, Claude Models on Google Cloud, and Microsoft Foundry.Tag: Anthropic This article, "Anthropic Launches Claude Fable 5.2 and Mythos 5.2" first appeared on MacRumors.com Discuss this article in our forums

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Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges. They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision.

Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.

Anthropic on Monday unveiled two new AI models, Claude Fable 5.2 and Claude Mythos ​5.2, as the OpenAI rival looks to ‌strengthen its position in the fast-growing AI market ahead of its planned IPO.

Like other Mythos releases, only vetted organizations can use 5.2 to start.

Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.

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