MegaLLM Documentation
Universal AI Platform - 70+ Models, One API
MegaLLM Documentation
Welcome to MegaLLM - the universal AI platform that connects 70+ large language models through a single, powerful API.
One API, Unlimited Possibilities: Access GPT-5, Claude Opus 4.1, Gemini 2.5 Pro, and more models without juggling multiple providers.
What is MegaLLM?
MegaLLM is your "super-API" for AI. Instead of integrating with OpenAI, Anthropic, Google, and other providers separately, you get access to all their models through one unified interface.
Why MegaLLM?
- Instant Model Switching: Change models with one parameter
- Automatic Fallbacks: Never go down when one model fails
- Unified Billing: One invoice for all your AI usage
- Zero Integration Overhead: Drop-in replacement for existing code
Quick Start
Models Catalog
Browse 70+ AI models with pricing and capabilities
Quick Start
Get your API key and make your first request
OpenAI API
Use OpenAI-compatible endpoints with any model
Anthropic API
Access Claude models with Anthropic format
Core Features
Automatic Fallback
Ensure high availability with intelligent model switching
Authentication
Simple API key management and security
FAQ
Frequently asked questions and troubleshooting
Who Uses MegaLLM?
Developers
- Experiment with different models without rewriting code
- Reduce integration complexity from weeks to minutes
- Build more robust applications with automatic fallbacks
Businesses
- Ensure high availability for customer-facing AI features
- Optimize costs across multiple model providers
- Future-proof AI investments with provider flexibility
Researchers
- Access cutting-edge models as they're released
- Run comprehensive evaluations and benchmarks
- Test model performance across different tasks
Example: Switching Models
from openai import OpenAI
client = OpenAI(
base_url="https://ai.megallm.io/v1",
api_key="your-api-key"
)
# Try GPT-5 for complex reasoning
response = client.chat.completions.create(
model="gpt-5",
messages=[{"role": "user", "content": "Analyze this data..."}]
)
# Switch to Grok for code generation
response = client.chat.completions.create(
model="xai/grok-code-fast-1",
messages=[{"role": "user", "content": "Write a Python function..."}]
)
# Use Claude for creative writing
response = client.chat.completions.create(
model="claude-opus-4-1-20250805",
messages=[{"role": "user", "content": "Write a story about..."}]
)Popular Model Combinations
| Use Case | Primary Model | Fallback Models | Why |
|---|---|---|---|
| Chatbots | gpt-4o-mini | gpt-3.5-turbo, claude-3.5-sonnet | Fast, cost-effective |
| Code Generation | xai/grok-code-fast-1 | gpt-5, claude-3.7-sonnet | Specialized for code |
| Analysis | claude-opus-4-1-20250805 | gpt-5, gemini-2.5-pro | Best reasoning |
| Creative Writing | claude-opus-4-1-20250805 | gpt-5, claude-sonnet-4 | Creative excellence |
Getting Started
Ready to get started? Head to our Quick Start guide to make your first API call in minutes.
3-Step Setup
- Get API Key: Sign up and get your MegaLLM API key
- Choose Format: Use OpenAI or Anthropic API format
- Start Building: Make your first request to any of 70+ models
Need Help?
- Browse our guides: Comprehensive documentation for every feature
- Check the FAQ: Common questions and solutions
- Contact support: support@megallm.io for technical assistance
- Use search: Press Cmd+K to search all documentation