API Reference

Base URLs

MegaLLM supports two API formats:

OpenAI Format

https://ai.megallm.io/v1

Compatible with OpenAI SDKs and tools

Anthropic Format

https://ai.megallm.io

Compatible with Anthropic Claude SDKs

Authentication

All API endpoints require authentication using one of these methods:

Bearer Token (Recommended)

Authorization: Bearer YOUR_API_KEY

API Key Header (Anthropic Format)

x-api-key: YOUR_API_KEY
anthropic-version: 2023-06-01

Get your API key from the MegaLLM Dashboard.

Core Endpoints

Chat Completions

OpenAI-compatible chat API with streaming, function calling, and vision support

Messages

Anthropic-compatible API with extended thinking, tools, and prompt caching

Models

List all 70+ AI models with capabilities, pricing, and context windows

Advanced Features

Streaming

Real-time streaming responses with Server-Sent Events

Function Calling

Enable AI to interact with external tools and APIs

Authentication Guide

Comprehensive authentication methods and security best practices

Quick Start

Python
JavaScript
cURL

from openai import OpenAI

client = OpenAI(
    base_url="https://ai.megallm.io/v1",
    api_key="your-api-key"
)

response = client.chat.completions.create(
    model="gpt-4",
    messages=[{"role": "user", "content": "Hello!"}]
)

import OpenAI from 'openai';

const openai = new OpenAI({
  baseURL: 'https://ai.megallm.io/v1',
  apiKey: process.env.MEGALLM_API_KEY,
});

const response = await openai.chat.completions.create({
  model: 'gpt-4',
  messages: [{ role: 'user', content: 'Hello!' }]
});

curl https://ai.megallm.io/v1/chat/completions \
  -H "Authorization: Bearer $MEGALLM_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Rate Limits

Rate limits vary by plan tier:

Tier	Requests/min	Tokens/min	Concurrent
Basic	60	90K	10
Pro	300	450K	40
Enterprise	Custom	Custom	Custom

SDK Support

MegaLLM is compatible with popular AI SDKs:

Python: openai, anthropic, langchain
JavaScript/TypeScript: openai, @anthropic-ai/sdk
Go: go-openai
Ruby: anthropic-rb
Rust: async-openai
Java: openai-java
C#: OpenAI-DotNet

Overview

Chat & Messages

Models

Guides

Base URLs

OpenAI Format

Anthropic Format

Authentication

Bearer Token (Recommended)

API Key Header (Anthropic Format)

Core Endpoints

Chat Completions

Messages

Models

Advanced Features

Streaming

Function Calling

Authentication Guide

Quick Start

Rate Limits

SDK Support

Need Help?

Developer Docs

Models Catalog

​Base URLs

OpenAI Format

Anthropic Format

​Authentication

​Bearer Token (Recommended)

​API Key Header (Anthropic Format)

​Core Endpoints

Chat Completions

Messages

Models

​Advanced Features

Streaming

Function Calling

Authentication Guide

​Quick Start

​Rate Limits

​SDK Support

​Need Help?

Developer Docs

Models Catalog

Base URLs

Authentication

Bearer Token (Recommended)

API Key Header (Anthropic Format)

Core Endpoints

Advanced Features

Quick Start

Rate Limits

SDK Support

Need Help?