AXIOM.
Free tier

Constitutional governance on your AI calls.

Bring your own provider key. AXIOM enforces 344 deterministic articles on every request and response. No model costs. 10,000 governed calls per month, free forever.

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Drop-in OpenAI compatibility
# Before — direct to OpenAI
client = OpenAI(api_key="sk-...")

# After — through AXIOM, same SDK, same models
client = OpenAI(
    api_key="ax_free_sk_...",
    base_url="https://api.axiom-gi.com/v1",
    default_headers={"X-Provider-Key": "sk-..."},
)