⚡ Unified AI API Platform

One API for All Your AI Needs

Access OpenAI, Claude, DeepSeek, and Gemini through a single, unified API. Simplify your AI integration with our powerful, flexible REST API that works with all leading LLM providers.

50+ AI Models
99.9% Uptime
40 Req/Min
Get Started Free
Trusted by developers worldwide
const response =
await onellm . chat ()
40 req/min

Why Choose OneLLM?

One Integration, Multiple Models

Connect once to our API and instantly access all leading AI models without managing multiple integrations.

Reliability & Redundancy

Automatic failover between AI providers ensures your applications stay running even if one provider experiences issues.

Cost Optimization

Cheaper, Simpler, and easier to integrate with our API, than our competitors. Use one library, one payment point, and one API Key.

Supported AI Providers

OpenAI

Access the latest ChatGPT Models, and more through our unified API

Anthropic

Connect to Claude models seamlessly

Google

Integrate with Gemini models easily

DeepSeek

Leverage DeepSeek's powerful models

Competitor Comparison

Provider Simple to integrate Single library Same output format
OpenRouter
OneLLM
Amazon Bedrock