Kimi K2.5 API
Moonshot's chat model. Call it on 666 AI with the same API key as every other model. Pay as you go; prices follow the upstream in real time and this page updates hourly.
| Vendor | Moonshot |
| Type | chat |
| Price | $0.81 per 1M input tokens · $4.49 per 1M output tokens |
| Context window | 200K tokens |
| Live test | Passed our live test in the last 7 days |
| Model ID (use this in your request) | moonshotai/kimi-k2.5 |
How to call Kimi K2.5
The API is OpenAI-compatible. Replace YOUR-ENDPOINT with the endpoint shown on your API Key page after you sign up, and YOUR-KEY with your key.
curl https://YOUR-ENDPOINT/v1/chat/completions \
-H "Authorization: Bearer YOUR-KEY" \
-H "Content-Type: application/json" \
-d '{"model": "moonshotai/kimi-k2.5", "messages": [{"role": "user", "content": "Hello"}]}'from openai import OpenAI
client = OpenAI(base_url="https://YOUR-ENDPOINT/v1", api_key="YOUR-KEY")
r = client.chat.completions.create(
model="moonshotai/kimi-k2.5",
messages=[{"role": "user", "content": "Hello"}],
)
print(r.choices[0].message.content)Similar models — price comparison
| Model | Price |
|---|---|
| Step 5 Preview | $1.35 per 1M input tokens · $3.65 per 1M output tokens |
| Gemini 3.6 Flash | $0.9113 per 1M input tokens · $4.56 per 1M output tokens |
| Gemini 3.7 Flash | $0.9113 per 1M input tokens · $4.56 per 1M output tokens |
| Gemini 3.8 Flash | $0.9113 per 1M input tokens · $4.56 per 1M output tokens |
| Grok 4.20 0309 Reasoning | $1.86 per 1M input tokens · $3.71 per 1M output tokens |
| Grok 4.20 Multi Agent 0309 | $1.86 per 1M input tokens · $3.71 per 1M output tokens |
More models from Moonshot
| Model | Price |
|---|---|
| Kimi K3 | $0.3226 per 1M input tokens · $14.58 per 1M output tokens |
| Kimi K2.6 | $0.808 per 1M input tokens · $3.4 per 1M output tokens |
FAQ
How much does the Kimi K2.5 API cost?
On 666 AI, Kimi K2.5 costs $0.81 per 1M input tokens · $4.49 per 1M output tokens. You pay only for what you use — no monthly fee. Prices follow the upstream in real time; this page updates every hour.
Can I use the official OpenAI SDK?
Yes. The API is OpenAI-compatible: in the OpenAI Python or Node.js SDK just change base_url and api_key, and set model to moonshotai/kimi-k2.5.
How do I pay?
Bank card (including Google Pay / Apple Pay), USDT / ETH, or bank wire. Top up once and usage is deducted as you go.