Inference APIs | Mixlayer Docs

Mixlayer provides OpenAI-compatible APIs for chat, text generation, responses, embeddings, and model discovery.

See Choosing an Inference API for guidance on when to use Chat Completions or Responses.

The base URL is:

https://models.mixlayer.ai/v1

Use your preferred OpenAI-compatible client. Point it at the base URL above, provide your Mixlayer API key, and keep using the methods you already know.

Connect with an OpenAI-compatible client

1 import os
2 from openai import OpenAI
3 
4 client = OpenAI(
5     api_key=os.environ["MIXLAYER_API_KEY"],
6     base_url="https://models.mixlayer.ai/v1",
7 )
8 
9 response = client.chat.completions.create(
10     model="qwen/qwen3.5-4b-free",
11     messages=[{"role": "user", "content": "Hello!"}],
12 )
13 
14 print(response.choices[0].message.content)

Existing applications can usually switch to Mixlayer by changing only the API key and base URL. See Client Libraries for TypeScript, Rust, streaming, and curl examples.

Authentication

Create an API key in the Mixlayer console and provide it as a Bearer token:

Authorization: Bearer $MIXLAYER_API_KEY

Available Inference APIs

API	Endpoint
Responses Generate model responses from text or typed input items.	`POST /v1/responses`
Responses WebSocket Run multi-turn Responses API generation over WebSocket.	`GET /v1/responses`
Chat Completions Generate assistant messages from a conversation.	`POST /v1/chat/completions`
Embeddings Create embedding vectors from text or token input.	`POST /v1/embeddings`

Use a model identifier from the Models catalog in inference requests. For a guided first request, follow the Quickstart.