ArcRouter does not sell plans or credit packs. A call costs the tokens it used at the posted rate, paid in USDC on Arc or Base. Agents can pay per request with no account at all.
Send a request, get a 402 with the price, sign it, get your answer. Settled on Arc or Base in seconds. No key, no account.
Deposit USDC once and get an arc_sk_ key that works in any OpenAI SDK. Calls spend the balance at exact token cost.
Identical deterministic requests are answered from cache at half price. Agent traffic repeats more than you think.
Pay-per-call signs a ceiling. Whatever the call did not use is refunded to your wallet. Close a key and the rest goes back too.
Prices in USDC per 1M tokens. What is posted is what you pay.

The token of the ArcRouter network, deployed on Arc mainnet. This is the only contract address. Anything else is not ours.
0x5681e38CBFF1d5c4461294c6CF3970AA0761D2EBThere are no accounts. The wallet that pays is the owner, and the key is the account.
Fund a prepaid arc_sk_ key from the dashboard or the CLI. It is shown once.
Point any OpenAI client at ArcRouter. Or skip the key and let your agent pay each call with x402.
Billing is exact: tokens used × posted rate, settled in USDC on Arc or Base. No per-call fee, nothing recurring, nothing hidden.