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Models and research

New models, benchmarks and research that matter for coding, with our own measurements where we have them.

Cover: Kimi K3.1 Pro vs Claude Opus 5.5, who measured what. Terminal-Bench 4.0 65.7 vs 66.4, Terminal-Bench Science 38.1 vs 63.3, Artificial Analysis index 55 vs 58, half the price

Models and research

Kimi K3.1 Pro vs Opus 5.5: what the benchmarks really show

Kimi K3.1 Pro is 0.7 points behind Opus 5.5 on Terminal-Bench 4.0 at half the price. Who ran each benchmark, where it lags, how to use it in coding agents.

CodexGuild ResearchOct 26, 20269 min read

Models and research — blog · CodexGuild