Anthropic system card chart shows internal model beating public Claude models, joked poster

felpix_ · x · 2026-11-10

An X post shares a chart attributed to an Anthropic system card comparing Claude Opus 5, Claude Myths 5.1/5.2 and other models, where an "Internal model" outperforms the released ones. The quoted tweet jokes about the card's casual tone — "this one isn't the best, and the better one only took 2 weeks longer to make." Note: the "Myths" model names are unverified.

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