Anthropic reportedly prepping Fable 5.2 to answer GPT-6 Astra; Grok 4.7 due next week

kimmonismus · x · 2026-09-05

X user kimmonismus compiles rumors: GPT-6 Astra was just the beginning, and Anthropic is reportedly preparing a major release (possibly Fable 5.2) in response. OpenAI's DevDay is near, with Sam Altman saying more capable models are coming soon per Axios, and Grok 4.7 is rumored for next week. All unconfirmed.

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