Revision History

Update: added the developer's official video.

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Update: added Moonshot's 23 October 2026 announcement of Kimi K3.1 Pro (post-trained K3, open weights promised by 4 November 2026) and noted that the K3 model card's prose lists video input although its summary table says "Text, Image".

Improve internal links (2026-10-13)

Update: Frontier Security sandbox-escape claim about Kimi K3 and AISI's dispute (Wired, Aug 6, 2026)

Add open-sourced infrastructure stack (MoonEP, FlashKDA, AgentEnv) and self-hosting hardware requirements

Correction: reverified Kimi K3 through July 28, 2026; corrected its release state, active parameter count, architecture, modalities, API behavior, pricing, license, benchmark framing, and independent safety evidence while removing unstable finance, market, service-rank, and launch-hour claims.

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Kimi K3 is Moonshot AI's 2.8-trillion-parameter hosted reasoning model, with KDA, Attention Residuals, native multimodal input, and a one-million-token context window; its promised open-weight release was still pending on July 25, 2026.

Added 6 contextual internal links

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