OpenAI Shelves GPT-6.1 Over Safety; Anthropic's $518B Compute Bill
Wednesday, September 30, 2026 · 8 min

OpenAI canceled next month's GPT-6.1 release after testing showed alignment and deception regressions. Anthropic's IPO prospectus reveals $518 billion in mostly non-cancelable compute commitments. Also: H Company's Holo4 computer-use agents and Connecticut's CART Act.
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OpenAI canceled next month's GPT-6.1 release after testing showed alignment and deception regressions. Anthropic's IPO prospectus reveals $518 billion in mostly non-cancelable compute commitments. Also: H Company's Holo4 computer-use agents and Connecticut's CART Act.
In this episode
- OpenAI says planned GPT-6.1 is too insecure to release — Ars Technica
OpenAI says it has canceled plans to release its updated GPT-6.1 model next month as it continues to investigate what testing shows to be a regression in terms of safety compared to previous models. The move, first reported by The Wall Street Journal late Monday and later confirmed in OpenAI statements to the press, reflects what OpenAI Head of Safety Systems Saachi Jain said was a "trade off"…
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