Nebula API is an enterprise-grade AI model gateway built on the unified OpenAI API standard. One key gives you access to 150+ models from OpenAI, Anthropic, Google, xAI, DeepSeek, Alibaba, Moonshot, Zhipu, ByteDance, MiniMax and more.

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Quickstart

Point the OpenAI SDK at Nebula and switch models by changing a single string: 
from openai import OpenAI

client = OpenAI(
    api_key="sk-xxxxxxxxxx",
    base_url="https://llm.ai-nebula.com/v1",
)

# OpenAI
response = client.chat.completions.create(
    model="gpt-5.2",
    messages=[{"role": "user", "content": "Hello!"}],
)

# Switch to Claude — only the model name changes
response = client.chat.completions.create(
    model="claude-sonnet-4-6",
    messages=[{"role": "user", "content": "Hello!"}],
)

Quickstart Guide

Get your key and make your first call in three steps

API Reference

Endpoints, routing, and request schemas

Browse Models

Live Model Square — all 150+ models and pricing

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Core APIs

Chat Completions

Multi-turn conversations and text generation

Image Generation

Text-to-image, image-to-image, and context-aware generation

Video Generation

Text- and image-to-video with Veo, Seedance, Wan and more

Realtime Voice

Low-latency text and voice conversations

Embeddings

Text embeddings for search and RAG

Endpoint Routing

Which endpoint to use for each model family

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Models

Nebula API serves 150+ models from every major provider — OpenAI (GPT-5 series), Anthropic (Claude Opus & Sonnet 4), Google (Gemini 3), xAI (Grok 4), DeepSeek, Alibaba (Qwen), Moonshot (Kimi), Zhipu (GLM), ByteDance (Doubao) and MiniMax — plus image, video, and embedding models. The catalog changes often, so we keep it live instead of hardcoding it here:

Model Square

Browse all 150+ models, capabilities, and pricing on the platform

Models Catalog

Reference table with recommended endpoints and availability status

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Why Nebula API?

  • One API, every model — one account, one key, one OpenAI-compatible standard across all providers.
  • Smart routing & auto-fallback — multi-node routing that fails over automatically when a model is unavailable.
  • Unified billing — a single balance across every model, with transparent usage reports.

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Integrations

AI Chat

Cherry Studio, Chatbox and other chat clients

Coding

Cursor, Claude Code, Cline and other coding tools

Frameworks

LangChain, Dify and other AI frameworks

Translation

Immersive Translate, Bob and other translation tools

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Get started

Register

Create an account and get free test credits

Dashboard

Manage API keys, usage, and billing
Need help? Browse the FAQ or contact us.