Insider claim: OpenAI and Anthropic both hold back stronger internal models

haider1 · x · 2026-09-29

Blogger haider1 claims both Anthropic and OpenAI have better models internally, and each ships quickly once the other does. He expects OpenAI to move fast at DevDay since it uses Cerebras inference, letting it iterate 10x faster internally than Anthropic. The real constraint is compute, and Codex harness speed remains slow. (Unverified speculation.)

Related event: Insider Claims OpenAI Is Sitting on a Stronger Model(2 posts)→

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