Kimi K3.1 Pro tested: Moonshot's 3T-parameter model with 1M context takes on Opus 5.5

WorldofAI · youtube · 2026-10-24

WorldofAI published a full hands-on review of Moonshot AI's Kimi K3.1 Pro, its most powerful model yet at the 3-trillion-parameter class. Key claims: 1M-token context window, strong coding and agentic performance, plus 3D voxel world generation, positioned as cheaper and faster than Claude Opus 5.5, GPT-6 Astra, and Gemini 4 Argon.

The video covers benchmarks and real-world tests (3D voxel worlds, interactive games, realistic animations), all run through the author's own WoAI Bench tool so viewers can replicate the tests. Kimi's API offers new users a 15% first-purchase bonus through Nov 30.

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