Kimi K2.5
Access Kimi K2.5 through one API key. Moonshot AI's flagship model.
Moonshot AI's flagship model. Strong long-context performance with competitive pricing.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Kimi K2.5 respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
262K tokens
Max Output
66K tokens
Input Price
$0.57 / 1M tokens
Output Price
$2.54 / 1M tokens
Strengths
Holds up to 262,144 input tokens, suited to long documents, extended conversations, and large reference material.
Handles a wide range of languages, supporting global applications from a single model.
Strong general reasoning and analysis across complex, multi-step tasks.
Built by Moonshot AI with strong Chinese-language understanding and generation alongside English.
Quick start
Copy this snippet and start making calls with Kimi K2.5.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "moonshotai/kimi-k2.5",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Kimi K2.5 through YepAPI?
Kimi K2.5 API: Moonshot AI's long-context flagship
Kimi K2.5 is Moonshot AI's flagship model, known for strong long-context performance and multilingual reasoning at competitive pricing, with a 262K-token window. YepAPI serves it through one OpenAI-compatible endpoint.
Your single YepAPI key also reaches DeepSeek, Claude, Grok, Gemini, and more, plus SEO, SERP, and scraping endpoints, so Kimi's long context can pair with your data and search pipelines.
What is Kimi K2.5?
Kimi K2.5 is Moonshot AI's flagship general-purpose model, recognized for strong long-context handling and multilingual reasoning. It provides a 262,144-token context window with up to 65,535 output tokens, so it can work across long documents, extended conversations, and large reference sets in a single request. It pairs solid general reasoning with strong Chinese and English ability, making it a versatile choice for analysis, summarization, and assistant tasks, especially where inputs are long. Compared with Moonshot's code-specialized variant, K2.5 is the broad flagship for general reasoning rather than dedicated engineering work.
Build with Kimi K2.5 via YepAPI
Use YepAPI's OpenAI-compatible /v1/ai/chat endpoint with any OpenAI client. Set the base URL, add your key, and set the model string to Kimi K2.5; your existing messages and parameters carry over unchanged. Switching models is a single string swap. Because one key reaches the entire catalog, you can route long-context reasoning to Kimi K2.5 and other workloads to different models, plus call YepAPI's SEO and scraping endpoints, all from one integration.
Kimi K2.5 API pricing — $0.57 input / $2.54 output per 1M tokens
Kimi K2.5 costs $0.57 per 1M input tokens and $2.54 per 1M output tokens. For a flagship model with a 262K context window and strong multilingual reasoning, this is competitive pricing, well below premium Western flagships. Per-token billing means long-context jobs cost only what they consume, so you can routinely send large documents without an outsized bill.
Kimi K2.5 for long-document reasoning and multilingual work
Kimi K2.5 is well suited to summarizing and analyzing long documents, holding extended multi-turn conversations, and reasoning over large reference material, all within its 262K context window. Its strong Chinese and English ability makes it a fit for multilingual products and cross-lingual analysis. The combination of long context, solid reasoning, and competitive pricing makes it a dependable general-purpose flagship for content-heavy applications.
Try Kimi K2.5 free
New YepAPI accounts include $5 of free credit with no card required. That covers a generous amount of Kimi K2.5 usage, enough to test its long-context reasoning and multilingual quality on your own data, compare it with other models on the same key, and decide before adding payment.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Moonshot AI's flagship model. Strong long-context performance with competitive pricing.
Input tokens cost $0.57 per 1M tokens and output tokens cost $2.54 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Kimi K2.5 supports a 262K token context window with up to 66K output tokens per request.
Ready to use Kimi K2.5?
$5 free credit on signup. No credit card required. Pay per call.
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