Cognition's FrontierCode benchmark, released in June 2026, evaluates whether AI-generated code would actually be merged by a senior engineer, and across every model tested the answer is mostly no. The…
An evaluation of Anthropic's Sonnet 5 and Opus 4.8 models across 24 coding tasks shows Sonnet produces clearer and more intentional patches, while Opus yields simpler, more robust, and more minimal di…
Anthropic released Claude Fable 5, its first public Mythos-class model, achieving state-of-the-art results on long, multi-step reasoning and autonomous task completion. The model tops benchmarks like …
Cognition introduced FrontierCode, a new benchmark that evaluates code on mergeability rather than just unit-test passing, with tasks built by open-source maintainers requiring over 40 hours each. The…