Rumor: Anthropic to Release Opus 5.1 This Week; OpenAI Pre-Trains 10T Parameter Model
新智元 · wechat · 2026-08-26
Anthropic is reportedly planning to release Opus 5.1 this week, focusing on per-token intelligence, coding capabilities, and long-running agent tasks. Meanwhile, OpenAI is said to have finished pre-training a 10 trillion parameter model codenamed "Bel," intended to underpin its next-generation Astra and GPT-6. The second half of the year will see a dense release cycle including GPT Astra, Fable 5.1, and Grok 4.7.
Commercially, Ramp data indicates that Anthropic's flagship Fable 5 accounts for only 11% of enterprise AI spend two months post-launch, being outsold by the cheaper Opus 5. This suggests a shift towards "good enough" models among customers. Anthropic is preparing for a potential IPO with a valuation up to $2 trillion, while CEO Dario Amodei emphasizes AI safety over commercial interests in interviews.
Related event: Rumors: OpenAI completes 10T-parameter pretraining of model 'Bel'(13 posts)→
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