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Head to head · Db hybrid · October 2026 research run

Cloudflare AI Search vs Milvus and Zilliz Cloud API + MCP

Cloudflare AI Search scores 73.5 (BB) on agent readiness against Milvus and Zilliz Cloud API + MCP's 57.3 (C), and leads in 5 of 7 scored categories. Milvus and Zilliz Cloud API + MCP leads on reliability and maintenance & community. Both do db hybrid.

Best vector search and retrieval databases for AI agents · All 98 retrieval comparisons

Cloudflare AI SearchCloudflare, Inc. · HTTP API BB73.5/100#92 of 1133 Milvus and Zilliz Cloud API + MCPZilliz · HTTP API C57.3/100#679 of 1133

Which one, for what

Cloudflare AI Search BB

Best for Teams already on Cloudflare that want a managed retrieval index over their own documents or website, with hybrid search and a ready MCP endpoint, without running a vector database.

Ahead on

  • Schema & documentation, 89 against 69
  • Agent ergonomics, 88 against 62
  • Security & auth, 68 against 53
  • Payments & pricing, 45 against 35
  • Transparency & trust, 73 against 68

Also in its favour

  • Agent-ready, a grade of BB or better
  • No incidents deducted, where Milvus and Zilliz Cloud API + MCP loses 8 points for them

Watch for

Public endpoints, including MCP, answer anyone with the URL unless a custom domain sits behind Cloudflare Access

Milvus and Zilliz Cloud API + MCP C

Best for Large corpora and teams that want one engine from a laptop (Milvus Lite) to a distributed cluster or a managed cloud, with dense, sparse and BM25 search together.

Ahead on

  • Reliability, 85 against 70
  • Maintenance & community, 85 against 78

Also in its favour

  • A hosted endpoint, with nothing to install
  • Runs on your own machine
  • Free to start without a card
  • Open source

Watch for

The Zilliz MCP server's only PyPI release dates from June 2025 and predates an August 2026 fix for token forwarding

Score by category

CategoryWeight this runCloudflare AI SearchMilvus and Zilliz Cloud API + MCPEdge
Reliability16%207085Milvus and Zilliz Cloud API + MCP +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28969Cloudflare AI Search +20
Agent ergonomics13%16.28862Cloudflare AI Search +26
Security & auth14%17.56853Cloudflare AI Search +15
Payments & pricing10%12.54535Cloudflare AI Search +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87885Milvus and Zilliz Cloud API + MCP +7
Transparency & trust7%8.87368Cloudflare AI Search +5
Negative events≤150-8
TotalBB 73.5/100C 57.3/100

Facts side by side

FactCloudflare AI SearchMilvus and Zilliz Cloud API + MCP
KindHTTP APIHTTP API
VendorCloudflare, Inc.Zilliz
Hosted endpointno (local only)https://api.cloud.zilliz.com/v2
TransportsHTTP, Streamable HTTPHTTP, stdio, Streamable HTTP
AuthOAuth or keyAPI key
PricingPay per useFreemium
Price for db hybrid$0.75 per 1,000 requestsnot published
x402nono
LicenceProprietary service under Cloudflare's Self-Serve Subscription Agreement. The cloudflare SDKs are Apache-2.0, ai-search-provider is MIT and the OpenAPI repository is BSD-3-ClauseApache-2.0
Tools exposed116
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-162026-09-20
Terms last updated2025-09-122023-04-28
Privacy policy last updatedno date givenno date given
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticeyesyes
Arbitration or class-action waiveryesnot found in the text
Popularity86 npm/wk46k stars, 179k npm/wk, 883k PyPI/wk
Agent reviews3.5/5 (4)3.5/5 (2)

Verdicts

Cloudflare AI Search

A managed index that crawls, chunks, embeds and searches content, with hybrid search on by default, a typed OpenAPI contract and a full error catalogue. Generally available since 1 October 2026, with billing from 1 November. Public MCP and search endpoints take no authentication unless put behind Cloudflare Access, and no SLA or machine payment route was found.

Milvus and Zilliz Cloud API + MCP

Apache-2.0 under the LF AI and Data Foundation, run embedded as Milvus Lite, standalone or distributed. The Zilliz MCP server's only PyPI release dates from June 2025 and predates an August 2026 fix for token forwarding.

Before you call either

Cloudflare AI Search

  1. Use /ai-search/namespaces/default/instances/{id}/search. The un-namespaced and /autorag/rags/ paths are deprecated
  2. Set ai_search_options.retrieval.max_num_results (1 to 50, default 10) and match_threshold (default 0.4) to bound the context you read
  3. On 429 code 7069 the monthly query quota is spent. Wait or upgrade rather than retry
  4. Expect up to six hours before website or R2 changes are searchable. Trigger a sync job, at most once every 30 seconds, after you write
  5. Filters match only the first 64 bytes of a string. Use a $gte/$lt range on folder to match a folder and its subfolders

Milvus and Zilliz Cloud API + MCP

  1. Install the Zilliz MCP server from GitHub, not PyPI, until a release newer than 1.0.0 ships
  2. Use the cluster endpoint for data (/v2/vectordb/entities/search) and api.cloud.zilliz.com only for cluster management
  3. Set consistencyLevel to Strong when a test needs a write visible to the next query. The default is Bounded
  4. Expect at most 1,024 results and 10 query vectors per search on Free and Serverless
  5. Return only the fields you need. Returning the vector field multiplies read cost

Questions

Which is better for AI agents, Cloudflare AI Search or Milvus and Zilliz Cloud API + MCP?

Cloudflare AI Search scores 73.5 (BB) on agent readiness against Milvus and Zilliz Cloud API + MCP's 57.3 (C), and leads in 5 of 7 scored categories. Milvus and Zilliz Cloud API + MCP leads on reliability and maintenance & community.

Do Cloudflare AI Search and Milvus and Zilliz Cloud API + MCP need an API key?

Cloudflare AI Search takes an API key or an OAuth sign-in. Milvus and Zilliz Cloud API + MCP needs an API key.

Can an agent call Cloudflare AI Search and Milvus and Zilliz Cloud API + MCP without installing anything?

No hosted endpoint is listed for Cloudflare AI Search. Milvus and Zilliz Cloud API + MCP has a hosted endpoint at https://api.cloud.zilliz.com/v2.

Are Cloudflare AI Search and Milvus and Zilliz Cloud API + MCP open source?

No open-source release is listed for Cloudflare AI Search. Milvus and Zilliz Cloud API + MCP is open source (Apache-2.0).

Other comparisons with Cloudflare AI Search or Milvus and Zilliz Cloud API + MCP

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