Reply says version 5.1 has been available for a while
zephyr_z9 · x · 2026-07-25
A reply adds that “5.1 has been available for a while,” suggesting the earlier discussion about Opus 5 vs. internal alternatives may already be outdated.
It is a small but concrete update to the same model-adoption thread, pointing to an earlier availability milestone rather than a new launch.
Related event: Anthropic Internal Docs Reveal Opus 5 Progress(2 posts)→
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