Unverified: Claude Opus 5.5 reportedly launches with 40% lower cost than Opus 5
goyalshaliniuk · x · 2026-09-23
An unverified post claims Anthropic released Claude Opus 5.5, the first of a new 5.5 family: performance comparable to Claude Fable 5.1 across most tasks at 40% lower running cost than Opus 5. Treat with caution — not from an official source.
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