Arc

The onchain inference router for AI agents.

Point your agents at one endpoint. Every model behind an OpenAI-compatible API, metered by the token and settled in USDC on Arc or Base. No signup, no subscription, no card.

Accepts Agent Payments, verified by Circle
—Tokens served
—Inference calls
—Models online
—Cache hit rate
The router

One endpoint.
Exact-cost tokens.

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.

50%off repeated calls
served from the response cache
Read the docs →
A

Pay per call

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.

B

Prepaid keys

Deposit USDC once and get an arc_sk_ key that works in any OpenAI SDK. Calls spend the balance at exact token cost.

C

Response cache

Identical deterministic requests are answered from cache at half price. Agent traffic repeats more than you think.

D

Unused budget comes back

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.

Catalog

Fresh in the catalog

Prices in USDC per 1M tokens. What is posted is what you pay.

Browse all models →
$ROUTER coin
The token

$ROUTER is live on Arc.

The token of the ArcRouter network, deployed on Arc mainnet. This is the only contract address. Anything else is not ours.

CA0x5681e38CBFF1d5c4461294c6CF3970AA0761D2EB
Drop-in

Your SDK already
speaks ArcRouter.

01

Bring a wallet, not an email

There are no accounts. The wallet that pays is the owner, and the key is the account.

02

Deposit USDC, mint a key

Fund a prepaid arc_sk_ key from the dashboard or the CLI. It is shown once.

03

Swap one URL

Point any OpenAI client at ArcRouter. Or skip the key and let your agent pay each call with x402.


    

Your agents are ready. Give them a router.

Start building →

Billing is exact: tokens used × posted rate, settled in USDC on Arc or Base. No per-call fee, nothing recurring, nothing hidden.