Kimi K2.5 API - Complete Developer Guide

Everything you need to build with Kimi K2.5 API from Moonshot AI. Explore 200K context, advanced reasoning, coding capabilities, and multilingual support - all at 40% off official pricing through our proxy service.

What is Kimi K2.5 API?

Kimi K2.5 is the latest flagship large language model from Moonshot AI, the company behind the popular Kimi chatbot. As a significant upgrade over earlier Kimi models, K2.5 delivers breakthrough performance across reasoning, code generation, and multilingual tasks, making it one of the most capable models available through the Kimi API ecosystem.

The Kimi K2.5 API provides developers with programmatic access to this state-of-the-art model through a standard OpenAI-compatible interface. With a massive 200K token context window, K2.5 can process entire codebases, lengthy documents, and complex multi-turn conversations without losing context.

Whether you are building AI-powered coding assistants, document analysis tools, or conversational agents, the Kimi K2.5 API offers the performance and flexibility you need. Access it through the official platform.moonshot.cn or through our proxy service at a fraction of the cost.

Kimi K2.5 API Features

Kimi K2.5 introduces significant improvements over its predecessors. Here are the core capabilities that make the Kimi K2.5 API stand out:

Advanced Reasoning

State-of-the-art chain-of-thought reasoning for complex problem solving, mathematical proofs, and logical deduction. K2.5 matches or exceeds GPT-4 level reasoning on many benchmarks.

Superior Coding

Excellent code generation, debugging, and refactoring across Python, JavaScript, TypeScript, Go, Rust, and more. Ideal for building AI-powered development tools and coding assistants.

200K Context Window

Process up to 200,000 tokens in a single request. Analyze entire codebases, long research papers, legal documents, or maintain extensive conversation histories without truncation.

Multilingual Support

Native-level performance in Chinese and English with strong support for Japanese, Korean, French, German, Spanish, and many other languages. Perfect for global applications.

How to Access Kimi K2.5 API

There are two ways to access the Kimi K2.5 API: through the official Moonshot platform or through our discounted proxy service.

Official Platform

Sign up at platform.moonshot.cn to get your API key directly from Moonshot AI.

  • Direct access from Moonshot AI
  • Full official pricing
  • May require Chinese phone verification

Our Proxy Service

40% OFF

Access Kimi K2.5 through our OpenAI-compatible proxy at a significant discount - no Chinese phone number needed.

  • 40% of official price - save 60%
  • OpenAI SDK compatible endpoint
  • No Chinese phone verification required
  • Global low-latency access
Get Your API Key

Kimi K2.5 API Pricing Comparison

Compare pricing across Kimi models. Our proxy service offers all models at 40% of the official price, saving you 60% on every API call.

ModelContextOfficial InputOfficial OutputOur InputOur Output
kimi-k2.5200K¥60 / 1M tokens¥60 / 1M tokens¥24 / 1M tokens¥24 / 1M tokens
kimi-k2128K¥40 / 1M tokens¥40 / 1M tokens¥16 / 1M tokens¥16 / 1M tokens
moonshot-v1-128k128K¥60 / 1M tokens¥60 / 1M tokens¥24 / 1M tokens¥24 / 1M tokens

* Pricing is approximate and subject to change. Visit our pricing page for the latest rates.

Kimi K2.5 API Code Example

The Kimi K2.5 API is fully compatible with the OpenAI Python SDK. Simply point the base URL to our proxy endpoint and use the kimi-k2.5 model name.

Python (OpenAI SDK)

from openai import OpenAI

client = OpenAI(
    api_key="your_api_key",
    base_url="https://kimi-api.com/v1"
)

response = client.chat.completions.create(
    model="kimi-k2.5",
    messages=[
        {
            "role": "system",
            "content": "You are a helpful AI assistant with expertise in coding and reasoning."
        },
        {
            "role": "user",
            "content": "Write a Python function that implements binary search on a sorted list. Include type hints and docstrings."
        }
    ],
    temperature=0.7,
    max_tokens=4096
)

print(response.choices[0].message.content)

cURL

curl -X POST "https://kimi-api.com/v1/chat/completions" \
  -H "Authorization: Bearer your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k2.5",
    "messages": [
      {"role": "system", "content": "You are a helpful assistant."},
      {"role": "user", "content": "Explain the differences between TCP and UDP."}
    ],
    "temperature": 0.7,
    "max_tokens": 2048
  }'

Kimi K2.5 vs Competitors

How does Kimi K2.5 stack up against other leading large language models? Here is a detailed comparison:

FeatureKimi K2.5GPT-4Claude 3
Context Window200K tokens128K tokens200K tokens
ReasoningExcellentExcellentExcellent
CodingExcellentExcellentVery Good
Chinese LanguageNativeGoodGood
English LanguageExcellentNativeNative
OpenAI SDK CompatibleYesYesVia Adapter
Proxy Price (40% Off)AvailableN/AN/A

Related Resources

Explore more guides and tools to get the most out of the Kimi API ecosystem:

Start Using Kimi K2.5 API Today

Access Moonshot AI's most powerful model at 40% of official pricing. Leave your email to get your API key and start building with Kimi K2.5.