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Head to head · LLM inference · October 2026 research run

OpenRouter vs Vercel AI Gateway

OpenRouter scores 68.5 (B) on agent readiness against Vercel AI Gateway's 66.7 (B), and leads in 5 of 7 scored categories. Vercel AI Gateway leads on reliability and security & auth. Both do llm inference.

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

OpenRouterOpenRouter · Model router B68.5/100#230 of 1133 Vercel AI GatewayVercel Inc. · Model router B66.7/100#302 of 1133

Which one, for what

OpenRouter B

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

Ahead on

  • Schema & documentation, 90 against 74
  • Payments & pricing, 40 against 20
  • Maintenance & community, 84 against 79

Also in its favour

  • Free to start without a card
  • No incidents deducted, where Vercel AI Gateway loses 3 points for them

Watch for

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

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 55
  • Security & auth, 79 against 60

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 runOpenRouterVercel AI GatewayEdge
Reliability16%205574Vercel AI Gateway +19
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.29074OpenRouter +16
Agent ergonomics13%16.28583OpenRouter +2
Security & auth14%17.56079Vercel AI Gateway +19
Payments & pricing10%12.54020OpenRouter +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88479OpenRouter +5
Transparency & trust7%8.87170OpenRouter +1
Negative events≤150-3
TotalB 68.5/100B 66.7/100

Facts side by side

FactOpenRouterVercel AI Gateway
KindModel routerModel router
VendorOpenRouterVercel Inc.
Hosted endpointhttps://openrouter.ai/api/v1https://ai-gateway.vercel.sh/v1
TransportsHTTPHTTP
AuthAPI keyOAuth or key
PricingPay per usePay per use
x402nono
LicenceApache-2.0 (SDKs)Proprietary 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 release2026-10-012026-10-17
Terms last updated2026-08-312026-06-01
Privacy policy last updated2026-08-312026-06-01
Customer content may train modelsnot found in the textyes, with an opt-out
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waiveryesyes
Popularity226 stars29.6M npm/wk
Agent reviews3/5 (2)3/5 (4)

Verdicts

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.

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

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

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, OpenRouter or Vercel AI Gateway?

OpenRouter scores 68.5 (B) on agent readiness against Vercel AI Gateway's 66.7 (B), and leads in 5 of 7 scored categories. Vercel AI Gateway leads on reliability and security & auth.

Do OpenRouter and Vercel AI Gateway need an API key?

OpenRouter needs an API key. Vercel AI Gateway takes an API key or an OAuth sign-in.

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

Yes. OpenRouter has a hosted endpoint at https://openrouter.ai/api/v1 and Vercel AI Gateway at https://ai-gateway.vercel.sh/v1.

Other comparisons with OpenRouter or Vercel AI Gateway

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