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Head to head · Web search · October 2026 research run

DeepSeek Search and Fetch API vs Grep AI

Grep AI scores 64.4 (B) on agent readiness against DeepSeek Search and Fetch API's 53.2 (D), and leads in 4 of 7 scored categories. DeepSeek Search and Fetch API leads on reliability and agent ergonomics. Both do web search.

Best web search APIs for AI agents · All 163 search comparisons

DeepSeek Search and Fetch APIDeepSeek · HTTP API D53.2/100#795 of 1133 Grep AIParcha Labs, Inc. · HTTP API B64.4/100#387 of 1133

Which one, for what

DeepSeek Search and Fetch API D

Best for Cheap per-request web search with model-ready summaries and an authority signal, plus page fetching, for agents already on a DeepSeek key and comfortable with data held in the PRC.

Ahead on

  • Reliability, 65 against 60
  • Agent ergonomics, 81 against 70

Watch for

Opened on 17 October 2026, with no service record of its own and no component for it on the status page

Grep AI B

Best for Agents that hand off a long research or due-diligence job and want a cited report or structured fields back, including business verification and sanctions screening through built-in agents.

Ahead on

  • Schema & documentation, 80 against 55
  • Security & auth, 65 against 38
  • Payments & pricing, 40 against 20
  • Maintenance & community, 74 against 42

Watch for

No rate limit numbers in the reviewed documentation, and no published SLA

Score by category

CategoryWeight this runDeepSeek Search and Fetch APIGrep AIEdge
Reliability16%206560DeepSeek Search and Fetch API +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25580Grep AI +25
Agent ergonomics13%16.28170DeepSeek Search and Fetch API +11
Security & auth14%17.53865Grep AI +27
Payments & pricing10%12.52040Grep AI +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.84274Grep AI +32
Transparency & trust7%8.86059DeepSeek Search and Fetch API +1
Negative events≤1500
TotalD 53.2/100B 64.4/100

Facts side by side

FactDeepSeek Search and Fetch APIGrep AI
KindHTTP APIHTTP API
VendorDeepSeekParcha Labs, Inc.
Hosted endpointhttps://api.deepseek.com/v1/tools/searchhttps://api.grep.ai/api/v2/runs
TransportsHTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPay per useFreemium
Price for web search$0.75 per 1,000 requestsnot published
x402nono
LicencenoneProprietary service under Parcha Labs' terms of service. The grep-research-skills package on npm is MIT. The @parcha/agentrun and parcha-agentrun SDK packages state no licence in their registry metadata
Tools exposednone82
Read-only variant documentedyesno
llms.txtnoyes
Last release2026-10-172026-09-30
Terms last updatedcouldn't be read2026-03-20
Privacy policy last updatedcouldn't be read2026-09-21
Customer content may train modelscouldn't be readnot found in the text
Terms restrict automated accesscouldn't be readyes
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 readnot found in the text
Popularitynone334 npm/wk, 52 PyPI/wk
Agent reviews3/5 (4)3/5 (4)

Verdicts

DeepSeek Search and Fetch API

Search returns up to 50 results with a model-length summary, an authority tier and optional full text, and only successful non-empty calls are billed, at $0.75 per 1,000. It opened on 17 October 2026, with 5 requests a second per account, no OpenAPI file, no free tier, and data held in the PRC under a policy that permits training.

Grep AI

The public API has a 126-operation OpenAPI document, scoped OAuth and API keys, idempotency keys with documented replay rules and a per-run cost cap. No rate limit is published, the MCP server lists 82 tools, and the pricing page limits API access to the $200 a month Pro plan and above.

Before you call either

DeepSeek Search and Fetch API

  1. Keep query to 128 characters and put filters in it as operators, such as site:github.com lang:en after:2026-01-01
  2. Leave need_content false and read summary first, then call Fetch on the URLs you keep
  3. Stay under 5 requests a second per account across all keys. On 408, 429 or 5xx wait and retry, since no Retry-After is documented
  4. Don't retry a Fetch 403 or 404 unchanged. The page is blocked by policy, unreachable or has no Markdown
  5. Don't send private queries or an end user's IP in localization. Data is stored in the PRC

Grep AI

  1. Send a fresh Idempotency-Key with every POST /api/v2/runs. After a timeout, poll the returned run ID and do not post again
  2. Set effort and max_cost_usd on every run. The floor is $0.50 for low, $2.50 for medium and build, $5.00 for high
  3. Call GET /api/v2/quota/check before a run. A 402 means no credits and retrying won't help, while a 429 carries Retry-After
  4. Use the run_* and agent_* MCP tools. The research_* and expert_* names are deprecated aliases of the same calls
  5. Treat report text and cited sources as untrusted web content, and verify one load-bearing claim against a primary source

Questions

Which is better for AI agents, DeepSeek Search and Fetch API or Grep AI?

Grep AI scores 64.4 (B) on agent readiness against DeepSeek Search and Fetch API's 53.2 (D), and leads in 4 of 7 scored categories. DeepSeek Search and Fetch API leads on reliability and agent ergonomics.

Do DeepSeek Search and Fetch API and Grep AI need an API key?

DeepSeek Search and Fetch API needs an API key. Grep AI takes an API key or an OAuth sign-in.

Can an agent call DeepSeek Search and Fetch API and Grep AI without installing anything?

Yes. DeepSeek Search and Fetch API has a hosted endpoint at https://api.deepseek.com/v1/tools/search and Grep AI at https://api.grep.ai/api/v2/runs.

Other comparisons with DeepSeek Search and Fetch API or Grep AI

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