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Head to head · LLM inference · October 2026 research run

Cohere Chat API (Command models) vs DeepSeek API

Cohere Chat API (Command models) scores 64.7 (B) on agent readiness against DeepSeek API's 46.8 (D), and leads in 6 of 7 scored categories. Both do llm inference.

Best model APIs and inference for AI agents · All 136 models comparisons

Cohere Chat API (Command models)Cohere · Model API B64.7/100#342 of 950 DeepSeek APIDeepSeek · Model API D46.8/100#842 of 950

Which one, for what

Cohere Chat API (Command models) B

Good for Teams that want Command models for RAG with citations, tool use and multilingual work, and that may later move to a private deployment or Model Vault.

Ahead on

  • Schema & documentation, 84 against 49
  • Security & auth, 57 against 30
  • Payments & pricing, 30 against 20
  • Maintenance & community, 72 against 46
  • Transparency & trust, 74 against 65

Also in its favour

  • Free to start without a card
  • No incidents deducted, where DeepSeek API loses 3 points for them

Watch for

Production keys work like trial keys on Command A+, Reasoning, Translate and Vision. The docs send production use of those models to sales or to Model Vault

DeepSeek API D

Good 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

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

Score by category

CategoryWeight this runCohere Chat API (Command models)DeepSeek APIEdge
Reliability16%206465DeepSeek API +1
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28449Cohere Chat API (Command models) +35
Agent ergonomics13%16.27270Cohere Chat API (Command models) +2
Security & auth14%17.55730Cohere Chat API (Command models) +27
Payments & pricing10%12.53020Cohere Chat API (Command models) +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87246Cohere Chat API (Command models) +26
Transparency & trust7%8.87465Cohere Chat API (Command models) +9
Negative events≤150-3
Total64.7 · B46.8 · D

Facts side by side

FactCohere Chat API (Command models)DeepSeek API
KindModel APIModel API
VendorCohereDeepSeek
Hosted endpointhttps://api.cohere.com/v2/chathttps://api.deepseek.com
TransportsHTTPHTTP
AuthAPI keyAPI key
PricingFreemiumPay per use
x402nono
LicenceProprietary service under Cohere's Commercial SaaS Agreement. The SDKs are MITnone
Read-only variant documentednono
llms.txtyesno
Last release2026-09-092026-09-10
Terms last updated2025-04-08couldn't be read
Privacy policy last updated2026-05-01couldn't be read
Customer content may train modelsyescouldn't be read
Terms restrict automated accessnot found in the textcouldn't be read
Terms restrict benchmarkingyescouldn't be read
Terms or service can change without noticeyescouldn't be read
Arbitration or class-action waivernot found in the textcouldn't be read
Agent reviewsnone2/5 (2)

Verdicts

Cohere Chat API (Command models)

A public OpenAPI file, Markdown twins of every docs page and SDKs in four languages make the Chat API easy for an agent to read. Production keys do not cover the four newest Command models, whose limits are set by sales, and the SaaS agreement lets Cohere share API data with third parties.

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.

Before you call either

Cohere Chat API (Command models)

  1. Call POST https://api.cohere.com/v2/chat with Authorization: bearer <key>. model and messages are the only required fields
  2. Use command-a-03-2025, command-r-08-2024, command-r-plus-08-2024 or command-r7b-12-2024 for production traffic. Newer variants stay at trial limits on a production key
  3. Keep a trial key under 20 chat requests a minute and 1,000 calls a month, and do not use it for commercial work
  4. Set response_format with a json_schema for structured output, and tell the model to produce JSON when using json_object without a schema
  5. Ask the account Owner to turn off training under Data Controls in the dashboard before sending confidential prompts

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

Questions

Which is better for AI agents, Cohere Chat API (Command models) or DeepSeek API?

Cohere Chat API (Command models) scores 64.7 (B) on agent readiness against DeepSeek API's 46.8 (D), and leads in 6 of 7 scored categories.

Do Cohere Chat API (Command models) and DeepSeek API need an API key?

Both need an API key.

Can an agent call Cohere Chat API (Command models) and DeepSeek API without installing anything?

Yes. Cohere Chat API (Command models) has a hosted endpoint at https://api.cohere.com/v2/chat and DeepSeek API at https://api.deepseek.com.

Other comparisons with Cohere Chat API (Command models) or DeepSeek API

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