Fireship tests Kimi K3.1: free 3T-parameter open-weight model nears Opus on Terminal Bench

Fireship · youtube · 2026-10-27

Fireship published a first-look review of Kimi K3.1, a free open-weight 3-trillion-parameter model that lands within one point of Claude Opus on Terminal Bench. The video puts its coding chops to the test and delivers a verdict on whether it's actually good.

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