Who offers an OpenAI-compatible API?

Supported by 43 of 259 vendors

An endpoint that accepts OpenAI SDK requests, so switching providers is a base URL and a key.

Vendor	Status	Source	Evidence
Aleph Alpha Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Alibaba Cloud Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Anthropic Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Anyscale Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Arcee AI Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
AWS Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Baseten Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Cerebras Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Cloudflare Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
Cohere Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Crusoe Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Databricks Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
DeepSeek Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
DigitalOcean Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Fireworks AI Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Google Cloud Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Groq Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
Hugging Face Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
LM Studio Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Manus Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Meta Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Microsoft Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Modular Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Moonshot AI Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Nebius Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Nvidia Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Ollama Endpoint Vendor docs	Endpoint	Vendor docs	Sep 24, 2026
OpenPipe Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
OpenRouter Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Perplexity Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Pinecone Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Positron Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Prime Intellect Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Reka Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Runpod Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Sail Research Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
SambaNova Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Smallest.ai Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Together AI Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Vercel Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
vLLM Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
xAI Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026
Z.ai Endpoint Vendor docs	Endpoint	Vendor docs	Sep 25, 2026

About OpenAI-compatible API

An endpoint that accepts OpenAI SDK requests, so switching providers is a base URL and a key.

Server: the vendor documents an OpenAI-compatible endpoint for its models. Evidence: the vendor's own documentation naming it, with the sentence kept, or the specification project's adopter page.

Issued by De facto standard set by OpenAI's Chat Completions API. Also searched as OpenAI compatible API providers, OpenAI SDK compatibility.

Also in Model APIs and runtimes: ONNX

Standards changes by email