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Amplitude vs PostHog

Amplitude scores higher on the AgentReady, 83/100 against 67/100. They differ on 16 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Amplitude. Amplitude is a product analytics platform that helps teams understand user behavior, run experiments, and build better products.

PostHog. PostHog is a product analytics platform that helps teams understand customer behavior, automatically diagnose problems, fix bugs, and generate pull requests.

Where Amplitude is ahead

Amplitude passes llms-full.txt / full agent docs, and PostHog 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, openapi / spec quality, request examples provided, response examples provided and errors and status codes documented. PostHog misses those.

And on adopt, programmatic credential creation and copyable quickstart. PostHog misses those.

Finally, on operate, structured, predictable output, machine-readable errors and rate-limit behavior predictable. PostHog misses those.

Where PostHog is ahead

PostHog passes search discoverable, and Amplitude does not. That is discover, whether an agent can find the product at all without being told it exists.

It also holds understand: pricing understandable. Amplitude misses it.

And on adopt, self-service signup, no mandatory sales call and free trial or free allowance. Amplitude misses those.

What neither does

Both fail fast time to first request, retry behavior documented, idempotency support. 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. PostHog leads 93 to 87. Amplitude misses search discoverable; PostHog misses llms-full.txt / full agent docs.

Understand is whether an agent can read the docs and work out how the API behaves before calling it. Amplitude leads 92 to 38. Amplitude misses pricing understandable; PostHog misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. PostHog leads 81 to 65. Amplitude misses self-service signup, no mandatory sales call, free trial or free allowance, fast time to first request; PostHog misses programmatic credential creation, fast time to first request, copyable quickstart.

Operate. Amplitude leads 88 to 56. Amplitude misses retry behavior documented, idempotency support; PostHog misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

Amplitude does not publish a machine-readable starting price. PostHog starts at $0.00005/event and has a free tier.

Signal by signal

Which to pick

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

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