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Last9 vs LlamaIndex

LlamaIndex scores higher on the AgentReady, 52/100 against 48/100. They differ on 13 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Last9. Last9 is an observability platform for logs, metrics, and traces.

LlamaIndex. LlamaIndex provides document parsing and extraction tools that turn complex documents into AI-ready context.

Where Last9 is ahead

Last9 passes clear canonical domain, clear product positioning and mcp discoverable, and LlamaIndex does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds adopt: mcp integration available. LlamaIndex misses it.

And on operate, agent compatibility verified. LlamaIndex misses it.

Where LlamaIndex is ahead

LlamaIndex passes search discoverable, and Last9 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, pricing understandable and limits / constraints documented. Last9 misses those.

And on adopt, self-service signup, free trial or free allowance and fast time to first request. Last9 misses those.

Finally, on operate, observable execution. Last9 misses it.

What neither does

Both fail openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, no mandatory sales call, programmatic credential creation, cli available, structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable. 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. Last9 leads 87 to 67. Last9 misses search discoverable; LlamaIndex misses clear canonical domain, clear product positioning, mcp discoverable.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. LlamaIndex leads 46 to 15. Last9 misses structured api reference, openapi / spec quality, authentication documented, pricing understandable, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; LlamaIndex misses openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented.

Adopt. LlamaIndex leads 60 to 50. Last9 misses self-service signup, no mandatory sales call, programmatic credential creation, free trial or free allowance, fast time to first request, cli available; LlamaIndex misses no mandatory sales call, programmatic credential creation, cli available, mcp integration available.

Operate. Last9 leads 41 to 35. Last9 misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, observable execution; LlamaIndex misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified.

Pricing

Last9 does not publish a machine-readable starting price. LlamaIndex starts at $0/mo and has a free tier.

Signal by signal

Which to pick

LlamaIndex clears more of the signals an agent needs, so it is the safer default for unattended use. Full profiles: Last9 and LlamaIndex. Alternatives to each: Last9, LlamaIndex.

An agent can fetch this as data: POST /v1/compare {"slugs": ["last9", "llamaindex"]}