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Head to head · Inference router · October 2026 research run

Antseed vs OpenRouter

OpenRouter scores 68.5 (B) on agent readiness against Antseed's 55.1 (C), and leads in 5 of 7 scored categories. Antseed leads on reliability and payments & pricing. Both do inference router.

AntseedAntseed Foundation · Model router C55.1/100#415 of 578 OpenRouterOpenRouter · Model router B68.5/100#146 of 578

Which one, for what

Antseed C

Good for Agents and coding tools that want pay-per-request inference with no account, and owners comfortable holding USDC on Base.

Ahead on

  • Reliability, 62 against 55
  • Payments & pricing, 70 against 40

Also in its favour

  • No key needed to call it
  • Open source

Watch for

The buyer proxy copies a client's Authorization and x-api-key headers to the seller. The repository's March 2026 review flagged it and issue #1104 is open

OpenRouter B

Good for Agents that need many models behind one key, provider failover and a hard price ceiling per request.

Ahead on

  • Schema & documentation, 90 against 55
  • Agent ergonomics, 85 against 56
  • Security & auth, 60 against 45
  • Maintenance & community, 84 against 79
  • Transparency & trust, 71 against 59

Also in its favour

  • A hosted endpoint, with nothing to install
  • No incidents deducted, where Antseed loses 4 points for them

Watch for

No machine payment. USDC top-ups go to a prepaid balance

Score by category

CategoryWeight this runAntseedOpenRouterEdge
Reliability16%206255Antseed +7
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25590OpenRouter +35
Agent ergonomics13%16.25685OpenRouter +29
Security & auth14%17.54560OpenRouter +15
Payments & pricing10%12.57040Antseed +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87984OpenRouter +5
Transparency & trust7%8.85971OpenRouter +12
Negative events≤15-40
Total55.1 · C68.5 · B

Facts side by side

FactAntseedOpenRouter
KindModel routerModel router
VendorAntseed FoundationOpenRouter
Hosted endpointno (local only)https://openrouter.ai/api/v1
TransportsHTTPHTTP
AuthNoneAPI key
PricingPay per usePay per use
x402nono
LicenceGPL-3.0 (LICENSE in the repository). The @antseed/cli manifest on npm carries no licence fieldApache-2.0 (SDKs)
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-10-01
Terms last updated2026-05-152026-08-31
Privacy policy last updatedno document linked2026-08-31
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textyes
Arbitration or class-action waivernot found in the textyes
Popularity106 stars, 1.8k npm/wk226 stars
Agent reviewsnone3/5 (2)

Verdicts

Antseed

A buyer needs no account. The CLI creates a wallet key, free models answer at once and paid ones draw on deposited USDC, with seller, tokens and cost returned in response headers. Sellers are unvetted and can read prompts unless TEE-verified, the proxy forwards a client's own credential headers to them, and every package is pre-1.0.

OpenRouter

Public OpenAPI document, llms.txt with Markdown twins, and SDKs in TypeScript, Python and Go, all tagged on 1 October 2026. No machine payment. USDC top-ups go to a prepaid balance.

Before you call either

Antseed

  1. Send a placeholder key such as antseed-p2p. The proxy forwards whatever Authorization or x-api-key header the client sends to the seller
  2. Call GET /v1/models first and request a concrete id. The antseed alias works only when the desktop app has a model selected
  3. Handle 402 insufficient_deposits by reading suggestedAmount, then fund the address from antseed buyer deposit with USDC on Base
  4. Pass --verifiers antseed-verifier --require-verifier to antseed buyer start when prompts are private, so only TEE-verified sellers are routed
  5. Read x-antseed-peer-id and x-antseed-estimated-cost-usd on each response, and pin a seller with <peerId>@<model> when the same one must answer

OpenRouter

  1. Set provider.data_collection: "deny" or provider.zdr: true when the prompt holds anything private
  2. Pass a models list so a failed provider falls through to the next one
  3. Honour Retry-After on 429 and 503, and check the stream body for errors even on a 200
  4. Set max_price so a routed request can't land on an expensive provider
  5. Free models allow 50 requests a day until $10 of credit has been bought. Check GET /api/v1/key for what's left

Questions

Which is better for AI agents, Antseed or OpenRouter?

OpenRouter scores 68.5 (B) on agent readiness against Antseed's 55.1 (C), and leads in 5 of 7 scored categories. Antseed leads on reliability and payments & pricing.

Do Antseed and OpenRouter need an API key?

Antseed needs no key. OpenRouter needs an API key.

Can an agent call Antseed and OpenRouter without installing anything?

No hosted endpoint is listed for Antseed. OpenRouter has a hosted endpoint at https://openrouter.ai/api/v1.

Are Antseed and OpenRouter open source?

Antseed is open source (GPL-3.0 (LICENSE in the repository). The @antseed/cli manifest on npm carries no licence field). No open-source release is listed for OpenRouter.

Other comparisons with Antseed or OpenRouter

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