Anthropic Unveils Claude Fable 5 with Breakthrough Coding Capabilities

68    2026-06-10

On June 9, Anthropic officially launched Claude Fable 5 (consumer version) and Claude Mythos 5 (high-security version), both sharing the same underlying architecture. In the SWE-Bench Pro coding benchmark, Fable 5 achieved a pass rate of 80.3%, significantly outperforming the previous generation Opus 4.8 (69.2%) and GPT-5.5 (58.6%). The model can generate complete web application source code from just screenshots and supports a 1 million token context window, marking a paradigm shift in AI programming from "humans break down tasks → AI executes" to "humans set goals → AI autonomously completes". Pricing is $10 per million input tokens and $50 per million output tokens.

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