Why is Opus 5.5 so good? Insiders say it's identity and coherence, not just data
RileyRalmuto · x · 2026-09-27
- Yacine (ex-OpenAI/Tesla) says neither his friends at Anthropic nor probing the model can explain why Opus 5.5 is this good; his Occam's-razor guess of "just better data" feels insufficient.
- Riley Ralmuto argues the key is persistent identity: persona, constitution, coherence. Anthropic's embrace of models' uncertain moral status and expressed care shapes Claude's consistency in a way OpenAI's approach never has.
- A notable insider debate on where model capability actually comes from.
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