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Oct 23, 2026

Moonshot AI releases Kimi K3.1 Pro with 1 million token context window

Chinese AI company Moonshot AI released Kimi K3.1 Pro, a 2.8 trillion parameter MoE model with 104 billion active parameters and a 1-million-token context window, marking the first major upgrade since its DeepSeek moment.

Oct 23, 2026·2 sources

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Top claims

▪Kimi K3.1 Pro Highspeed API pricing is set at $4.00 per million input tokens and $20.00 per million output tokens, compared to Kimi K3's rates of $3.00 input and $15.00 output
▪On October 23, 2026, Beijing-based Moonshot AI released Kimi K3.1 Pro, the first model in its K3.1 series, featuring a 1-million-token context window
▪Moonshot AI set API pricing for Kimi K3.1 Pro at $2.00 per million input tokens and $10.00 per million output tokens, with cache hits costing $0.20 per million tokens

Subtopics

AI Models1 Chinese AI models1 Frontier models1 Kimi K3.1 Pro1 Large language models (LLMs)1 Long context1

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