@natolambert: The crazy jump in perf for Claude 5 Fable is vindication for people who say Opus 4.5 and were like "yeah I should (most…
Summary
Nathan Lambert highlights the significant performance improvement of Claude 5 Fable, suggesting it validates the shift away from manual coding.
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Claude Opus 5.5 released matching fable 5.1 and costs 40% less
Claude Opus 5.5 has been released, matching the performance of Fable 5.1 while offering a 40% cost reduction.
@danshipper: BREAKING: Anthropic just dropped Fable 5.1—and CLAUDE IS SO BACK. We’ve spent the last week testing it at @every across…
Anthropic has released Fable 5.1, an updated Claude model that excels in coding, writing, and knowledge work, with improved speed, token efficiency, and business readiness.
@corbin_braun: wait... Opus 5.5 is better than Fable 5.1? is this true @grok
A tweet questions if Claude Opus 5.5 outperforms Fable 5.1, referencing Cursor's announcement that Opus 5.5 is now available as the top model on CursorBench with 40% lower costs.
Claude Fable 5 benchmarks
Anthropic released benchmarks for Claude Fable 5, a new AI model, showing significant performance improvements.
@cline: Claude Opus 5 takes #1 on SWE-Bench at 97%, and claims Fable 5 level intelligence at half the price. Incredible that in…
Anthropic released Claude Opus 5, achieving 97% on SWE-Bench and claiming Fable 5-level intelligence at half the price, marking rapid SOTA improvement.