Kimi K2 pricing
Kimi K2 API cost from Moonshot AI (Kimi) — $0.570 per 1M input tokens and $2.30 per 1M output tokens. Open weights. Estimate your real monthly bill below, then compare it against every other model.
Balanced open weights 128K context · all prices USD per 1M tokens, list price last verified 2026-06-27.
Kimi K2 capabilities & limits
Representative specs for this tier — confirm exact limits in the Moonshot AI (Kimi) docs.
Call Kimi K2 from your code
The exact model string and endpoint to use. Works with the OpenAI SDK — just point base_url at the URL below.
kimi-k2-0905-previewhttps://api.moonshot.ai/v1MOONSHOT_API_KEYcurl https://api.moonshot.ai/v1/chat/completions \
-H "Authorization: Bearer $MOONSHOT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kimi-k2-0905-preview",
"messages": [{"role": "user", "content": "Hello"}]
}'Model strings follow each provider's naming convention; confirm the current id in the Moonshot AI (Kimi) docs before relying on it.
What a Kimi K2 API call actually costs
Blended input + output cost at Kimi K2's list rates — useful yardsticks before you commit to volume.
Kimi K2 cost calculator
Enter your monthly volume to estimate the Kimi K2 bill. Runs entirely in your browser.
Moonshot AI (Kimi) models — Kimi K2 in context
How Kimi K2 prices against its siblings. Cheapest reference cost first.
| Model | Input /1M | Output /1M | Cost / call* | Context | Type |
|---|---|---|---|---|---|
| Kimi K2 Open weights | $0.570 | $2.30 | $0.0029 | 128K | Balanced open |
| Kimi K2 Thinking Open-weight reasoning | $0.600 | $2.50 | $0.0031 | 256K | Reasoning open |
*Reference cost of one call with 1,000 input + 1,000 output tokens — a neutral yardstick. Use the calculator for your real usage. Cheapest row highlighted.
How Kimi K2 pricing works
Kimi K2 is billed per token: a lower input price of $0.570 per million tokens for everything you send, and a higher output price of $2.30 per million for everything the model generates. To turn that into a real Kimi K2 bill, multiply by your monthly request volume and average prompt/response length — the calculator above does exactly that.
Kimi K2 does not list a separate cached-input rate, so every input token bills at $0.570 per million. If repeated context is a big part of your prompts, a model with prompt caching may end up cheaper in practice.
List prices move fast — always confirm the current numbers on the official Moonshot AI (Kimi) pricing page before relying on them for budgeting.
Kimi K2 pricing FAQ
How much does the Kimi K2 API cost?
Kimi K2 costs $0.570 per 1M input tokens and $2.30 per 1M output tokens. A typical 3K-input / 500-output call works out to about $0.0029.
What is Kimi K2's context window?
Kimi K2 has a 128K-token context window. Tokens you put in the prompt are billed at the $0.570 per 1M input rate.
Does Kimi K2 charge extra for output tokens?
Yes. Output (generated) tokens cost $2.30 per 1M, versus $0.570 per 1M for input — about 4.0× more, which is normal for LLM APIs.
Is there a cheaper alternative to Kimi K2?
In the same balanced tier, Command R (Cohere) is cheaper at $0.150 in / $0.600 out. The overall cheapest model on the market is Gemini 1.5 Flash-8B.
Is Kimi K2 open weights?
Yes — Kimi K2 is released as open weights, so you can self-host it instead of paying per-token API rates. The prices here are a representative hosted endpoint.