Kimi K3.1 Pro tops Terminal-Bench 4.0 at roughly a third of Claude's cost

Pyros-SD-Models · reddit · 2026-10-24

A Terminal-Bench 4.0 score-vs-cost chart shows Kimi K3.1 Pro (max) leading the field at 65% TB4 score with an average cost of only $4 per task.

By comparison, Claude Sonnet 5.5 scores 61% at over $21 per task, Claude Opus 5.5 hits 65% at $13, GPT-6 Astra ranges 50-58% across effort levels, GLM-5.3 sits near 41%, and DeepSeek-V4.1-Flash-1017 near 34%. K3.1 Pro is both the top scorer and the cheapest in the high-score tier (data from tbench.ai).

Related event: Moonshot Releases Kimi K3.1 Pro, Open-Weight Model Rivaling GPT-6(33 posts)→

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