爆料：Opus 5.5 表现让 OpenAI 措手不及

leo 🐾 @synthwavedd原推发布于 2026.09.23

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Claude Opus 5.5 is a very, very good model. Practically everyone at OpenAI was caught off-guard by this launch (not the timing, but the performance of the model!), and there's now a pretty "all hands on deck" atmosphere for 6.1 Astra - timelines are being compressed. But it'll face Fable 5.5! The RL magic really needs to do its work here