Haiku 4.5 + skills outperforms Opus 4.7. 9 models tested with and without skills (opens in new tab)

Full set of models tested: claude-opus-4-7 claude-opus-4-6 claude-sonnet-4-6 claude-haiku-4-5 gpt-5.4 gpt-5.3-codex gpt-5-codex cursor-composer-2

11 Skills used were here: https://github.com/mcollina/skills

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