Kimi K2 Instruct

by Moonshot AI

Kimi K2 Instruct is a model from Moonshot AI, released on July 11, 2025. It has a 200K-token context window and can generate up to 200K output tokens. API pricing is $0.5 per 1M input tokens and $0.5 per 1M output tokens. It ranks #116 of 220 models by Intelligence Score with a score of 21.8.

Kimi K2 is a state-of-the-art mixture-of-experts (MoE) language model with 32 billion activated parameters and 1 trillion total parameters. Trained with the MuonClip optimizer, it achieves exceptional performance across frontier knowledge, reasoning, and coding tasks while being meticulously optimized for agentic capabilities. The instruct variant is post-trained for drop-in, general-purpose chat and agentic experiences without long thinking.

Key specs

ProviderMoonshot AI
Release date2025-07-11
Licenseopen source
Context window200K tokens
Max output200K tokens
Input price$0.5 / 1M tokens
Output price$0.5 / 1M tokens
Intelligence Score21.8
Coding index12.3

Quick answers

What is the context window of Kimi K2 Instruct?

Kimi K2 Instruct has a context window of 200K tokens, with a maximum output of 200K tokens per response.

How much does Kimi K2 Instruct cost?

Kimi K2 Instruct costs $0.5 per 1M input tokens and $0.5 per 1M output tokens through the API.

Is Kimi K2 Instruct open source?

Yes. Kimi K2 Instruct is an open model released under the open source license.

When was Kimi K2 Instruct released?

Moonshot AI released Kimi K2 Instruct on July 11, 2025.

How does Kimi K2 Instruct compare to Claude Opus 5.5 (Reasoning)?

Kimi K2 Instruct scores 21.8 on the Intelligence Score versus 60.5 for Claude Opus 5.5 (Reasoning), the current #1. Input pricing is $0.5 vs $4 per 1M tokens.

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