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Finding signal on Twitter is more difficult than it used to be. We curate the best tweets on topics like AI, startups, and product development every weekday so you can focus on what matters.
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Fable 5.1 and Mythos 5.1 are live now. apparently it’s ~25% cheaper ln typical jobs ~45% on long agent runs. on Terminal-Bench 4.0: > Fable 5.1: 55.8% > Opus 5: 52.3% > Fable 5: 42% https://x.com/Hesamation/status/20948552…
We’re introducing Claude Fable 5.1 and Claude Mythos 5.1. They're the world’s most advanced models for coding and knowledge work.

