OpenAI vs Anthropic model race: 6.1 Astra "tomorrow or bust" as Fable 5.5 looms
karmay007 · x · 2026-09-29
synthwavedd argues OpenAI faces an uphill battle: unless 6.1 Astra ships tomorrow, Anthropic's incoming Fable 5.5 — with 5.x-to-5.5 leaps already visible in smaller classes — could dominate, and even Haiku 5.5 might beat 6 Sol. He sees Anthropic's token inefficiency as its key weakness where OpenAI holds an edge; karmay007 counters that OpenAI models have never been token-efficient either. A 6 Astra successor is expected within a month, but further RL may not suffice without a new pretrain.
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