Anthropic has released Claude Fable 5, a Mythos-class AI for Pro and Max users, excelling in coding, finance, research, and visual tasks. Stripe reported a 50-million-line code migration completed in a day. Fable 5 supports up to 128,000 output tokens, runs on Claude.ai, AWS Bedrock, Google Cloud, and Microsoft Foundry, and includes safeguards for high-risk topics.
Just like all its launches, Anthropic has quitely launched its most powerful Claude model ever released to the public. The Claude Fable 5 is termed to be a 'Mythos-class' AI model that is said to top charts like 80.3 percent on SWE-Bench Pro for agentic coding and excels at long, complex tasks, outpacing rivals such as Opus 4.8 and GPT-5.5. Claude Fable 5 is available now for Pro and Max subscribers only.
What Is Claude Fable 5?
Claude Fable 5 is coined to be Anthropic's its most powerful AI model ever made available to the general public. Fable 5's capabilities exceed those of any model Anthropic has ever made generally available, with the company describing exceptional performance in software engineering, knowledge work, vision, scientific research, and many other areas. The longer and more complex the task, the larger Fable 5's lead over other Claude models.
Think of it as Anthropic's answer to the arms race in AI, a model designed to tackle the hardest tasks users and developers throw at it, for longer and with fewer errors than anything before it.
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