Rumor: partners got a better Claude Sonnet 5 checkpoint, release expected next week
kimmonismus · x · 2026-09-27
Unconfirmed leak: @lyraxana says Anthropic partners received another Claude Sonnet 5.5 checkpoint that is even better than the first, with release upcoming. kimmonismus adds it will likely land next week, alongside OpenAI DevDay. Treat as credible but unverified rumor.
Related event: Claude Sonnet 5.5 leak: gradual rollout underway, launch imminent(20 posts)→
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