Moonshot AI: Kimi K2 Instruct
Kimi K2 Instruct is a language model from Moonshot AI released on Jul 11, 2025. It reads text and writes text, with a 256K token context window and up to 8K tokens per reply.
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It costs $0.57 per million input tokens and $2.30 per million output tokens.
It supports tool calling and structured JSON output, and its weights are open, so you can host it yourself.
5 providers serve it, including Novita AI, Hugging Face and NanoGPT. The lowest input price is $0.40 per million tokens at NanoGPT.
- Modalities
- In / out price
- $0.57 / $2.30 per 1M
- Context
- 256K
- Max output
- 8K
- Released
- Jul 11, 2025
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Kimi K2 Instruct pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.57 / 1M tokens | |
|---|---|---|
| Output | $2.30 / 1M tokens |
Kimi K2 Instruct providers
5 providers serve it, including Novita AI, Hugging Face and NanoGPT. The lowest input price is $0.40 per million tokens at NanoGPT. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Novita AI | $0.57 | $2.30 | – | 131K | 98K |
| Hugging Face | $1 | $3 | – | 131K | 16K |
| NanoGPT | $0.40 | $1.80 | $0.20 | 256K | 8K |
| Eden AI | $0.50 | $2 | – | 131K | 33K |
| Jiekou.AI | $0.57 | $2.30 | – | 131K | 131K |
What Kimi K2 Instruct costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Kimi K2 Instruct through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Temperature
temperature
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Kimi K2 Instruct questions
How much does the Kimi K2 Instruct API cost?
$0.57 per million input tokens and $2.30 per million output tokens. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Kimi K2 Instruct?
256,000 tokens of input, and it can write up to 8,192 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Kimi K2 Instruct?
5 providers serve it, including Novita AI, Hugging Face and NanoGPT. The lowest input price is $0.40 per million tokens at NanoGPT. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Kimi K2 Instruct support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Kimi K2 Instruct open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was Kimi K2 Instruct released?
Jul 11, 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on Kimi K2 Instruct?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
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