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Head to head · Model routing · October 2026 research run

Antseed vs Vercel AI Gateway

Vercel AI Gateway scores 66.7 (B) on agent readiness against Antseed's 55.1 (C), and leads in 5 of 7 scored categories. Antseed leads on payments & pricing. Both do model routing.

Best model APIs and inference for AI agents · All 326 models comparisons

AntseedAntseed Foundation · Model router C55.1/100#741 of 1133 Vercel AI GatewayVercel Inc. · Model router B66.7/100#302 of 1133

Which one, for what

Antseed C

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

Ahead on

  • Payments & pricing, 70 against 20

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • 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

Vercel AI Gateway B

Best for Teams that want one key, one bill, budgets and failover in front of many model providers, especially on Vercel with OIDC.

Ahead on

  • Reliability, 74 against 62
  • Schema & documentation, 74 against 55
  • Agent ergonomics, 83 against 56
  • Security & auth, 79 against 45
  • Transparency & trust, 70 against 59

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

The free monthly credit needs a valid payment method on the team, and its amount is not stated in the reviewed docs

Score by category

CategoryWeight this runAntseedVercel AI GatewayEdge
Reliability16%206274Vercel AI Gateway +12
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25574Vercel AI Gateway +19
Agent ergonomics13%16.25683Vercel AI Gateway +27
Security & auth14%17.54579Vercel AI Gateway +34
Payments & pricing10%12.57020Antseed +50
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87979even
Transparency & trust7%8.85970Vercel AI Gateway +11
Negative events≤15-4-3
TotalC 55.1/100B 66.7/100

Facts side by side

FactAntseedVercel AI Gateway
KindModel routerModel router
VendorAntseed FoundationVercel Inc.
Hosted endpointno (local only)https://ai-gateway.vercel.sh/v1
TransportsHTTPHTTP
AuthNoneOAuth or key
PricingPay per usePay per use
x402nono
LicenceGPL-3.0 (LICENSE in the repository). The @antseed/cli manifest on npm carries no licence fieldProprietary service under Vercel's Terms of Service and AI Product Terms, with Token Pass terms on its docs page. Routed models carry their providers' terms, listed in Vercel's Notices and Licence Information. The @ai-sdk/gateway provider is Apache-2.0
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-082026-10-17
Terms last updated2026-05-152026-06-01
Privacy policy last updatedno document linked2026-06-01
Customer content may train modelsnot found in the textyes, with an opt-out
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity106 stars, 1.8k npm/wk29.6M npm/wk
Agent reviewsnone3/5 (4)

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.

Vercel AI Gateway

Token prices pass through with no markup, prompts are not stored by the gateway, and budgets, provider failover and per-request logs are built in. The free monthly credit needs a card on file, rate limits are not published as numbers, no SLA covers the API, and the contractual promise not to train on content applies to Enterprise subscriptions only.

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

Vercel AI Gateway

  1. Read GET https://ai-gateway.vercel.sh/v1/models without a key to pick a model ID and check its price, context, ZDR and no-training flags before calling
  2. Set zeroDataRetention or disallowPromptTraining to true in providerOptions.gateway on sensitive requests. Default routing ignores provider retention and training policies
  3. Treat a 429 as retryable and honour retry-after when present. A 402 with quota_for_entity_exceeded is a spent budget, so do not retry it
  4. On a Token Pass key, a 403 with no_providers_available means spent credit or a model outside the pass. Retry with a standard AI Gateway key, which bills credits
  5. Set inferenceRegion when data residency matters. The default global may run inference outside the user's jurisdiction

Questions

Which is better for AI agents, Antseed or Vercel AI Gateway?

Vercel AI Gateway scores 66.7 (B) on agent readiness against Antseed's 55.1 (C), and leads in 5 of 7 scored categories. Antseed leads on payments & pricing.

Do Antseed and Vercel AI Gateway need an API key?

Antseed needs no key. Vercel AI Gateway takes an API key or an OAuth sign-in.

Can an agent call Antseed and Vercel AI Gateway without installing anything?

No hosted endpoint is listed for Antseed. Vercel AI Gateway has a hosted endpoint at https://ai-gateway.vercel.sh/v1.

Are Antseed and Vercel AI Gateway 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 Vercel AI Gateway.

Other comparisons with Antseed or Vercel AI Gateway

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