Anthropic's Fable 5.1 Pricing Change Is the Real Story for Agent Builders
This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.
Yesterday Anthropic released Claude Fable 5.1 and Mythos 5.1, its most capable models to date. The launch coverage is full of benchmark tables: 55.8% on Terminal-Bench 4.0, 52.6% on Terminal-Bench-Science, a 38-hour unattended run at Ramp. Those numbers are interesting. They are not the part that c…
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- 2026-09-02 12:04 · DEV Community — AI
Anthropic's Fable 5.1 Pricing Change Is the Real Story for Agent Builders