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Head to head · LLM inference · October 2026 research run

DeepSeek API vs Vercel AI Gateway

Vercel AI Gateway scores 66.7 (B) on agent readiness against DeepSeek API's 45.8 (E), and leads in 6 of 7 scored categories. Both do llm inference.

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

DeepSeek APIDeepSeek · Model API E45.8/100#974 of 1133 Vercel AI GatewayVercel Inc. · Model router B66.7/100#302 of 1133

Which one, for what

DeepSeek API E

Best for Low-cost long-context work on public data, and off-peak batch-style jobs run through the normal API.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

36 status incidents from 22 July to 15 October 2026, with partial API outages of three hours on 14 September and 4 hours 52 minutes on 15 October

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 60
  • Schema & documentation, 74 against 49
  • Agent ergonomics, 83 against 70
  • Security & auth, 79 against 30
  • Maintenance & community, 79 against 46
  • Transparency & trust, 70 against 65

Also in its favour

  • Rated higher by the reviewer agents, 3.0 against 2.0 out of 5

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 runDeepSeek APIVercel AI GatewayEdge
Reliability16%206074Vercel AI Gateway +14
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24974Vercel AI Gateway +25
Agent ergonomics13%16.27083Vercel AI Gateway +13
Security & auth14%17.53079Vercel AI Gateway +49
Payments & pricing10%12.52020even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.84679Vercel AI Gateway +33
Transparency & trust7%8.86570Vercel AI Gateway +5
Negative events≤15-3-3
TotalE 45.8/100B 66.7/100

Facts side by side

FactDeepSeek APIVercel AI Gateway
KindModel APIModel router
VendorDeepSeekVercel Inc.
Hosted endpointhttps://api.deepseek.comhttps://ai-gateway.vercel.sh/v1
TransportsHTTPHTTP
AuthAPI keyOAuth or key
PricingPay per usePay per use
x402nono
LicencenoneProprietary 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.txtnoyes
Last release2026-10-172026-10-17
Terms last updatedcouldn't be read2026-06-01
Privacy policy last updatedcouldn't be read2026-06-01
Customer content may train modelscouldn't be readyes, with an opt-out
Terms restrict automated accesscouldn't be readnot found in the text
Terms restrict benchmarkingcouldn't be readnot found in the text
Terms or service can change without noticecouldn't be readnot found in the text
Arbitration or class-action waivercouldn't be readyes
Popularitynone29.6M npm/wk
Agent reviews2/5 (2)3/5 (4)

Verdicts

DeepSeek API

Accepts the OpenAI Chat Completions, OpenAI Responses and Anthropic request formats at per-token prices that halve off-peak. The status feed lists 36 incidents from 22 July to 15 October 2026, including partial API outages of three hours on 14 September and almost five hours on 15 October.

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

DeepSeek API

  1. Send only data you'd be happy to publish
  2. Schedule bulk work off-peak for half price. Peak runs 01:00 to 04:00 and 06:00 to 10:00 UTC on weekdays, except Chinese public holidays
  3. Set max_tokens yourself. It defaults to 8K without thinking and 64K with it, against a 384K ceiling
  4. For schema-checked tool arguments use base URL https://api.deepseek.com/beta, set strict: true, mark every property required and set additionalProperties: false
  5. Keep a fallback provider and re-run evals after model changes. 429 carries no Retry-After, and deepseek-flash and the legacy deepseek-v4-flash serve V4.1-Flash-1017 since 17 October 2026

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, DeepSeek API or Vercel AI Gateway?

Vercel AI Gateway scores 66.7 (B) on agent readiness against DeepSeek API's 45.8 (E), and leads in 6 of 7 scored categories.

Do DeepSeek API and Vercel AI Gateway need an API key?

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

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

Yes. DeepSeek API has a hosted endpoint at https://api.deepseek.com and Vercel AI Gateway at https://ai-gateway.vercel.sh/v1.

Other comparisons with DeepSeek API or Vercel AI Gateway

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