Mercatus AI Gateway

Your agents.
One gateway.

Language, image and video models through one Mercatus API key. Bring your tools. Pay as you go.

Zero Data RetentionNo prompts or outputs stored by default.
Get API key Browse models 
from openai import OpenAI

client = OpenAI(
    base_url="https://gateway.mercatus-ai.com/v1",
    api_key="YOUR_MERCATUS_KEY",
)

with client.responses.create(
    model="MODEL_ID",
    input="Hello!",
    stream=True,
) as stream:
    for event in stream:
        if event.type == "response.output_text.delta":
            print(event.delta, end="", flush=True)
pip install openai
Setup guide

Beyond pay as you go

Use it today.
Plan for next month.

Buy OSTR for planned monthly usage. Each OSTR provides $20 of inference credit. Use it through the API or sell unused OSTR before the serving period ends.

Explore OSTR

Choose your month.

Each OSTR series has a delivery month and a published model menu.

Buy or sell OSTR.

Trade monthly inference on the Forward Market.

Use your credit through the API.

Each OSTR provides $20 of credit. API usage draws from it at your series’ fixed model prices.