Moonshot's open-weight Kimi K3.1 Pro hits 65.7% on Terminal-Bench, a point behind Opus at 1/3 cost
Prompt Engineering · youtube · 2026-10-24
Moonshot released Kimi K3.1 Pro, an open-weight MoE model with 2.8T total parameters (104B active) and a 1M token context. It scores 65.7% on Moonshot's own Terminal-Bench 4.0—under a point behind Claude Opus 5.5 (66.4%) and ahead of GPT-6 Astra (58.2%)—at roughly a third of Opus's per-task cost. Cyber-related training data was removed before open release, yet it solves 81% of internal exploit tasks vs 33% for Kimi K3. Live on the Kimi API at $2/$10 per million tokens; open weights due by Nov 4, 2026. All benchmarks are Moonshot's own.
Related event: Moonshot Releases Kimi K3.1 Pro, Open-Weight Model Rivaling GPT-6(33 posts)→
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