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Claude Haiku 5.5 vs GPT-6 Luna: Cost, Benchmarks

This story is from 2026-10-12. It is preserved in the archive; the latest stories are on the live feed.

Claude Haiku 5.5 vs GPT-6 Luna is the small-model match-up Anthropic picked for its own launch chart. So we ran both on our two agentic coding benchmarks. Haiku won both. On Forge 1.0, an Atlassian Forge app built with no internet, it scored 0.9661 to Luna's 0.395, fourth of 31 runs and 0.0106 behi…

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  1. 2026-10-12 05:05 · DEV Community — AI
    Claude Haiku 5.5 vs GPT-6 Luna: Cost, Benchmarks

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