Benchmarkers slam Kimi K3.1 Pro pricing: 53.7% score for $31.88, cache-read games suspected

natolambert · x · 2026-10-24

Benchmarker aicodeking tested Kimi K3.1 Pro on his KingBench 4 and found the 'cheap' pitch unconvincing: 53.7% (6th place) at $31.88 per run, only $16 cheaper than Opus — Haiku or Sol deliver better results $25 cheaper. He claims the model constantly re-reads cache, inflating costs while cache reads are priced the same as Opus, speculating this is a way to recover training costs. natolabert amplified it, noting few positive reactions on the timeline, and added that at the top end, real-world usability matters more than ±2 points on leaderboards — K3.1 may be on the 'miss' side, even as OpenAI dropped out of AA Analysis' top 5 after its release.

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