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Mixpanel vs PostHog

PostHog scores higher on the AgentReady, 67/100 against 60/100. They differ on 6 of the 41 signals. Which ones decides whether an agent can adopt them without a person watching.

What each one is

Mixpanel. Product intelligence platform for the AI era that helps teams understand customers and make data-driven decisions.

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

Where Mixpanel is ahead

Mixpanel 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 operate: structured, predictable output. PostHog misses it.

Where PostHog is ahead

PostHog passes authentication documented and limits / constraints documented, and Mixpanel does not. That is understand, whether an agent can read the docs and work out how the API behaves before calling it.

It also holds adopt: no mandatory sales call. Mixpanel misses it.

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

What neither does

Both fail structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented, programmatic credential creation, fast time to first request, copyable quickstart, 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. Mixpanel leads 100 to 93. Mixpanel misses nothing; 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. PostHog leads 38 to 23. Mixpanel misses structured api reference, openapi / spec quality, authentication documented, request examples provided, response examples provided, errors and status codes documented, limits / constraints documented; PostHog misses structured api reference, openapi / spec quality, request examples provided, response examples provided, errors and status codes documented.

Adopt. PostHog leads 81 to 70. Mixpanel misses no mandatory sales call, programmatic credential creation, fast time to first request, copyable quickstart; PostHog misses programmatic credential creation, fast time to first request, copyable quickstart.

Operate. PostHog leads 56 to 47. Mixpanel misses machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable, agent compatibility verified; PostHog misses structured, predictable output, machine-readable errors, retry behavior documented, idempotency support, rate-limit behavior predictable.

Pricing

Mixpanel starts at $0/mo and has a free tier. PostHog starts at $0.00005/event and has a free tier.

Signal by signal

Which to pick

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

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