OpenRouter

Base URL

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Free credits$0 USD (never)

NotesFree models available; $10 topup unlocks Anthropic models

Last verified2026-06-28

Free Models

Model ID	Context	Modalities	RPM	RPD
`meta-llama/llama-3.1-70b-instruct:free`	131K	text	—	—
`mistralai/mistral-7b-instruct:free`	33K	text	—	—

Quick Start

Python (OpenAI SDK)

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="YOUR_API_KEY",  # get at https://openrouter.ai/workspaces/default/keys
)
response = client.chat.completions.create(
    model="meta-llama/llama-3.1-70b-instruct:free",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

curl

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "meta-llama/llama-3.1-70b-instruct:free",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'