Moonshot's Kimi K3.1 Pro: 2.8T params, 1M context, priced 50% below Claude Opus 5.5
kimmonismus · x · 2026-10-24
Moonshot announced Kimi K3.1 Pro: a 2.8T-parameter multimodal model with a 1M-token context window, claiming parity with leading proprietary models on coding and agent tasks, with open weights promised by November 4.
Claimed highlights: it beats every listed US frontier model on 6 of 14 benchmarks in Moonshot's own evaluations. Pricing is $2/M input and $10/M output tokens — 50% below Claude Opus 5.5 ($4/$20) and 80% below GPT-6 Astra ($10/$50). In the accompanying Terminal-Bench 4.0 cost-vs-score chart, K3.1 Pro max hits 66% at roughly $3.5/task, well above same-cost rivals. Note these are vendor self-evaluations pending third-party verification.
Related event: Moonshot Releases Kimi K3.1 Pro, Open-Weight Model Rivaling GPT-6(31 posts)→
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