Mixpanel

The dominant theme across user comments (primarily HackerNews) is a recent security incident at Mixpanel that cascaded to expose OpenAI's API users' analytics data. Users heavily criticized Mixpanel's breach disclosure as 'very poorly written,' 'vague,' and 'defensive' — one user compared it to calling a catastrophe 'a recent family incident.' OpenAI publicly terminated Mixpanel as a vendor, which users viewed as 'a pretty damning statement.' Multiple users report receiving breach-notification emails even after closing their accounts months earlier, raising serious concerns about data retention practices and deletion policies. A key technical concern: Mixpanel stores user data in non-de-identified form — device IDs are linked to internal customer records and user journeys, making the exposed data more sensitive than typical 'anonymous analytics.' On pricing, users describe Mixpanel as having 'the most obscure pricing model of any SAAS I've ever tried to integrate with.' One user reports being downgraded from 20M events/month (free tier) to 10K events/month upon upgrading to a paid plan, calling it nonsensical. Another mentions costs reaching '$x,000 per month' after a startup package expired. Multiple users are actively migrating to alternatives including Plausible, PostHog, OpenPanel, Umami, and UXWizz, citing privacy-first requirements, GDPR compliance needs, and cost. Several users note they never fully utilized Mixpanel's depth even when paying for it, suggesting a gap between capability and actual realized value. Some B2B SaaS users acknowledge the utility of group-level analytics (tracking which customers use which features) but still question whether Mixpanel is worth the trade-offs.

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