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Milvus vs Qdrant

Qdrant scores higher on the AgentReady, 58/100 against 34/100. They differ on 9 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Milvus. An open-source vector database built for GenAI applications.

Qdrant. Qdrant is a high-performance vector search engine that helps build AI retrieval systems.

Where Qdrant is ahead

Qdrant passes clear canonical domain, clear product positioning and mcp discoverable, and Milvus does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: structured api reference and authentication documented. Milvus misses those.

And on adopt, self-service signup, fast time to first request, cli available and mcp integration available. Milvus misses those.

What neither does

Both fail public docs discoverable, llms-full.txt / full agent docs, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented, agent-compatible signup flow, programmatic credential creation, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified. If your agent needs any of those, you will be building it yourself either way.

Score, pillar by pillar

The AgentReady splits into four pillars, scored separately, because a product can be easy to find and still impossible to adopt.

Discover. Qdrant leads 80 to 47. Milvus misses clear canonical domain, clear product positioning, public docs discoverable, llms-full.txt / full agent docs, mcp discoverable; Qdrant misses public docs discoverable, llms-full.txt / full agent docs.

Understand. Qdrant leads 46 to 23. Milvus misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; Qdrant misses openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented.

Adopt is whether an agent can get a key and make its first successful call without a human in the loop. Qdrant leads 80 to 40. Milvus misses self-service signup, agent-compatible signup flow, programmatic credential creation, fast time to first request, cli available, mcp integration available; Qdrant misses agent-compatible signup flow, programmatic credential creation.

Operate. Both sit at 24/100 here. Milvus misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified; Qdrant misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution, agent compatibility verified.

Pricing

Milvus does not publish a machine-readable starting price and has a free tier. Qdrant does not publish one and has a free tier.

Signal by signal

Which to pick

Qdrant clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Milvus and Qdrant. Alternatives to each: Milvus, Qdrant.

An agent can fetch this as data: POST /v1/compare {"slugs": ["milvus", "qdrant"]}