Moonshot Launches Kimi K3.1 Pro
API pricing starts at $2 per million input tokens and $10 per million output tokens.
Chinese AI company Moonshot AI has launched Kimi K3.1 Pro, a model designed for coding, research and complex tasks at a lower cost than leading competitors. Kimi K3.1 Pro scored 65.7% on Terminal-Bench 4.0 in company-reported tests.
Those scores come from the company. The update also says performance varies across benchmarks.
How Kimi K3.1 Pro was priced and scored
The 65.7% result is close to Claude Opus 5.5 at 66.4% and ahead of GPT-6 Astra at 58.2%. API pricing starts at $2 per million input tokens and $10 per million output tokens. Performance varies across different benchmarks, so one test is not the whole picture.
Our verdict
On the company's own Terminal-Bench figure, Kimi K3.1 Pro is just behind Claude Opus 5.5 and ahead of GPT-6 Astra. The price it states is $2 and $10 per million tokens, and other benchmarks can tell a different story.
Follow for more updates.
Frequently asked questions
Who launched the model?
Chinese AI company Moonshot AI launched Kimi K3.1 Pro.
What score did the company report?
65.7% on Terminal-Bench 4.0, against 66.4% for Claude Opus 5.5 and 58.2% for GPT-6 Astra.
What does the API cost?
Pricing starts at $2 per million input tokens and $10 per million output tokens.
Do the scores hold on every test?
No. The update says performance varies across different benchmarks.
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