What does Kimi K3.1 Pro cost?

Paid · from $2 per million input tokens. The Kimi API pricing page lists kimi-k3.1-pro at $2.00 per million input tokens, $10.00 per million output tokens, and $0.20 per million cached input tokens. Cache writes are $2.00 per million tokens for a 5-minute TTL and $4.00 for a 1-hour TTL. Highspeed is $4.00 input, $20.00 output, $0.20 cached input, and $4.00 or $8.00 for those writes. Prices exclude tax. Moonshot says full weights will be released by November 4, 2026. The announcement does not list a membership price.

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Kimi K3.1 Pro

4.2/ 5

Moonshot's K3.1 model for coding, 3D, and agent work, with a 1M context window.

Also known as Kimi K3.1 Pro, kimi-k3.1-pro, Moonshot

What it does

Kimi K3.1 Pro is the first model in Moonshot's K3.1 series, announced on October 23, 2026. Moonshot calls it its most capable 3T-class open-weight model so far, with a 1-million-token context window, and says it improves coding, 3D creation, financial research, and other agentic work. A Highspeed variant runs at 2 to 3 times the speed. Both are on Kimi.ai, Kimi Work, Kimi Code, and the Kimi API. The API lists kimi-k3.1-pro at $2.00 per million input tokens and $10.00 per million output tokens. Moonshot says the full weights will be released by November 4, 2026. The announcement does not give an exact parameter count.