🚀 Now in early access · Kimi K3 + GLM-5.2 live

One API.
Every model.
70% cheaper.

OpenAI-compatible gateway to Kimi K3, GLM-5.2, DeepSeek V3 and more. Drop-in replacement for OpenAI/Claude — just change the base URL.

Get free API key → Read docs

cURL
Python
Node.js

# Drop-in replacement for OpenAI/Claude
curl https://onefreeapi.cloud/v1/chat/completions \
  -H "Authorization: Bearer sk-ofa-..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k3",
    "messages": [{"role":"user","content":"Hello!"}]
  }'
      

# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://onefreeapi.cloud/v1",
    api_key="sk-ofa-...",
)

resp = client.chat.completions.create(
    model="kimi-k3",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)
      

// npm install openai
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://onefreeapi.cloud/v1",
  apiKey: "sk-ofa-...",
});

const resp = await client.chat.completions.create({
  model: "kimi-k3",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);
      

Models

Top open & proprietary models, all behind one API. Switch models by changing one parameter.

Kimi K3 NEW

Moonshot's flagship. 256K context. Coding & reasoning.

$0.003/1K in · $0.006/1K out256K ctx

GLM-5.2

Zhipu AI · 1M context. Long-document analysis.

$0.003/1K in · $0.006/1K out1M ctx

DeepSeek V3

Open-source flagship. Best price/performance.

$0.001/1K in · $0.002/1K out128K ctx

Doubao Seed 1.6

ByteDance. Fast, cheap, multilingual.

$0.0015/1K in · $0.003/1K out256K ctx

Qwen 2.5 FREE

Local inference. Test & prototype free.

$0 · 100 calls/day32K ctx

More coming

GPT-4.1, Claude Sonnet 4.5, Gemini 3 — all in Q3.

Stay tunedRoadmap

Simple Pricing

Pay-as-you-go tokens. No monthly commitment. Free tier forever.

Free

$0/mo

Test & prototype. No credit card.

100K free tokens on signup
100 calls/day on free models
1 API key
Community support

Start free →

Pro

$14/mo

For production apps. All models.

1M tokens included
All premium models (Kimi K3, GLM-5.2)
5 API keys
Usage dashboard
Email support

Get Pro →

Enterprise

$139/mo

Scale with SLA & support.

10M tokens included
Unlimited API keys
Multi-region routing
Priority support (SLA)
Custom invoicing (USDT/WeChat/Alipay)

Drop-in Replacement

If your app uses OpenAI SDK or Anthropic SDK, you're 30 seconds away.

Python (OpenAI SDK)

# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://onefreeapi.cloud/v1",
    api_key="sk-ofa-...",  # your OneFreeAPI key
)

response = client.chat.completions.create(
    model="kimi-k3",  # or "glm-5.2", "deepseek-v3"
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
      

Coding Tools

Point your favorite AI coding tool at OneFreeAPI — one key, every model.

OpenClaw

原生支持 OpenAI 兼容端点。编辑 ~/.openclaw/openclaw.json:

openclaw.json
{
  "models": {
    "default": "onefreeapi/kimi-k3",
    "providers": {
      "onefreeapi": {
        "baseUrl": "https://onefreeapi.cloud/v1",
        "apiKey": "sk-ofa-...",
        "api": "openai-completions",
        "models": [
          { "id": "kimi-k3", "name": "Kimi K3", "contextWindow": 262144, "maxTokens": 8192 },
          { "id": "glm-5.2", "name": "GLM-5.2", "contextWindow": 1048576, "maxTokens": 8192 }
        ]
      }
    }
  }
}

Codex CLI

编辑 ~/.codex/config.toml,并 export ONEFREEAPI_API_KEY=sk-ofa-...。注意 wire_api = "chat" 必须显式指定（我们提供 Chat Completions；部分新版 Codex 仅支持 Responses API,如遇报错请使用仍支持 chat wire 的版本）。

config.toml
model = "kimi-k3"
model_provider = "onefreeapi"

[model_providers.onefreeapi]
name = "OneFreeAPI"
base_url = "https://onefreeapi.cloud/v1"
env_key = "ONEFREEAPI_API_KEY"
wire_api = "chat"

Claude Code

Claude Code 使用 Anthropic Messages 协议,经 claude-code-router 桥接到 OneFreeAPI 的 OpenAI 端点:npm i -g @musistudio/claude-code-router,然后编辑 ~/.claude-code-router/config.json,最后以 ccr code 启动。

config.json
{
  "Providers": [
    {
      "name": "onefreeapi",
      "api_base_url": "https://onefreeapi.cloud/v1/chat/completions",
      "api_key": "sk-ofa-...",
      "models": ["kimi-k3", "glm-5.2"]
    }
  ],
  "Router": {
    "default": "onefreeapi,kimi-k3"
  }
}

Any OpenAI-compatible tool

Cursor / Cline / Continue / Kimi Code 等任何支持自定义 OpenAI Base URL 的工具,填这三项即可:

settings
Base URL:  https://onefreeapi.cloud/v1
API Key:   sk-ofa-...        # dashboard 里创建,只显示一次
Model:     kimi-k3            # 或 glm-5.2 / deepseek-v3 / glm-4-flash,GET /v1/models 查最新

Frequently Asked Questions

Everything you need to know about the OneFreeAPI gateway.

What is OneFreeAPI?

OneFreeAPI is an OpenAI-compatible LLM API gateway. One API key gives you access to Kimi K3, GLM-5.2, DeepSeek V3, Doubao Seed 1.6, Qwen and more — with unified billing, automatic failover between upstream providers, and prices up to 70% cheaper than OpenAI.

How do I migrate from OpenAI?

It takes about 30 seconds. Keep using the official OpenAI SDK (Python, Node.js) or plain HTTP, set base_url to https://onefreeapi.cloud/v1, and replace the API key with your OneFreeAPI key (sk-ofa-...). No other code changes are needed — chat completions, streaming and model listing follow the OpenAI schema.

Which models can I use?

Current lineup includes Kimi K3 (Moonshot, 256K context), GLM-5.2 (Zhipu, 1M context), DeepSeek V3, Doubao Seed 1.6 (ByteDance) and Qwen 2.5 (free tier). The live list is always available at GET /v1/models, and new flagship models are added as they launch.

Is there a free tier?

Yes. Every new account gets 100K free tokens on signup — no credit card required — plus 100 free calls per day on free-tier models like Qwen 2.5. Paid plans start at $14/month for 1M tokens.

What payment methods do you accept?

Pay-as-you-go token top-ups and subscriptions can be paid with USDT, WeChat Pay or Alipay. Enterprise plans support custom invoicing — contact support@onefreeapi.cloud.

One API.Every model.70% cheaper.