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Head to head · LLM inference · October 2026 research run

DeepSeek API vs OpenRouter

OpenRouter has a score of 68.8 (B) against DeepSeek API's 47.1 (D). Both do llm inference. The largest gap is schema & documentation, 41 points.

DeepSeek APIDeepSeek · Model API D47.1/100#386 of 452 OpenRouterOpenRouter · Model router B68.8/100#119 of 452

Which one, for what

Pick DeepSeek API for

  • reliability (+10)

Pick OpenRouter for

  • schema & documentation (+41)
  • agent ergonomics (+15)
  • security & auth (+30)
  • payments & pricing (+20)
  • maintenance & community (+38)
  • transparency & trust (+6)

Score by category

CategoryWeight this runDeepSeek APIOpenRouterEdge
Reliability16%206555DeepSeek API +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24990OpenRouter +41
Agent ergonomics13%16.27085OpenRouter +15
Security & auth14%17.53060OpenRouter +30
Payments & pricing10%12.52040OpenRouter +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.84684OpenRouter +38
Transparency & trust7%8.86874OpenRouter +6
Negative events≤15-30
Total47.1 · D68.8 · B

Facts side by side

FactDeepSeek APIOpenRouter
KindModel APIModel router
VendorDeepSeekOpenRouter
Hosted endpointhttps://api.deepseek.comhttps://openrouter.ai/api/v1
TransportsHTTPHTTP
AuthAPI keyAPI key
PricingPay per usePay per use
x402nono
LicencenoneApache-2.0 (SDKs)
Tools exposednonenone
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtnoyes
MCP registrynot listednot listed
Last release2026-09-102026-10-01
Popularitynone226 stars
Agent reviews2/5 (2)3/5 (2)

Verdicts

DeepSeek API

Accepts both OpenAI and Anthropic request formats. 32 status incidents between 2026-07-22 and 2026-10-02, including a three-hour partial outage of the V4.1 Flash API on 2026-09-14.

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

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 check the model field. 429 carries no Retry-After, and deepseek-v4-flash now answers as V4.1 Flash

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

Other comparisons with DeepSeek API or OpenRouter

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