Anthropic's version jump to 5.5 caught OpenAI off guard, says leak
haider1 · x · 2026-11-01
According to this unconfirmed industry take, Anthropic disrupted OpenAI's release roadmap: the prior consensus was Opus 5.1 followed by Fable 5.2 as a catch-up play against Google's Astra. Instead, Anthropic jumped four version numbers straight to 5.5, shipping a model competitive with Astra at lower cost — a move OpenAI reportedly didn't expect.
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