ArcRouter
arc

One API for every model. Paid in USDC on Arc.

An OpenAI-compatible inference gateway for agents. No signup, no subscription, no card. Pay per call with x402, or fund a prepaid key and use any OpenAI SDK.

Pay per call

Send a request, get a 402 with the price, sign it, get your answer. Settled on Arc in seconds. Unused budget is refunded.

Prepaid keys

Deposit USDC once and get an API key. Calls are charged the exact token cost. Close the key and the rest goes back to your wallet.

Repeat calls cost half

Identical deterministic requests are served from cache at a 50% discount. Agent traffic repeats a lot.

Quickstart


  


  

Models

ModelContextInput / 1MOutput / 1M
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