Anthropic and OpenAI shipped cheaper models 101 minutes apart, defying 'pace the frontier' pledge
altryne · x · 2026-09-26
ThursdAI recaps a wild week: days after lab heads signed Dario's 'pace the frontier' pledge (Sep 12), Anthropic and OpenAI shipped cheaper new models 101 minutes apart on Sep 22.
- Claude Opus 5.5 (09:31 PT): $4/M input, cached reads cut to $0.20/M, $20/M output — 40% cheaper than Opus 5
- GPT-6 Sol (11:12 PT): half the price of Opus 5.5; Luna is 40x cheaper again; GPT-6 Astra unchanged
- Caveat: for agentic coding, cached reads dominate the bill, so Opus 5.5's 20¢ cache price may win in practice
Also: Meta puts Muse at the center of everything; Grok moves into Tesla — one owner ordered his usual Starbucks by voice and it was paid and waiting; open source cloned Jev within a week; the episode's producer was an AI.
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