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Morning Edition · Friday, September 11, 2026Published at 2:22 AM EDT · New York
Claude Fable 5.1 Posts Large Gains on Terminal and Automation Benchmarks
Anthropic more than doubled the model's Terminal-Bench-Science score to 52.6 percent and cut cache-read pricing by 75 percent while holding headline token rates flat.
Anthropic's Claude Fable 5.1 and Mythos 5.1 are a point release with an unusually wide spread between benchmarks. On Terminal-Bench 4.0 coding, the model moves from 42.0 to 55.8 percent. On Terminal-Bench-Science it goes from 24.7 to 52.6 p…
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Frontier Labs Race on AI Coding Capability
Coding is becoming a primary competitive battleground among frontier labs, with incumbents standing up permanent coding teams and investing in new training stages (e.g. midtraining) to match leaders like Anthropic; expect recurring reorganizations, benchmarks, and model releases aimed specifically at code.
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