Amplitude API vs PostHog API: Which API for AI agents?
Category: Analytics & Monitoring
PostHog API scores higher overall (9/10 vs 7/10). PostHog API pulls ahead on Machine-readable pricing. For most agent use cases, start with PostHog API. Switch to Amplitude API if you specifically need its capabilities or you're already locked into its ecosystem.
Score breakdown
| Amplitude API | PostHog API | |
|---|---|---|
| Overall score | 7/10 | 9/10 |
| CLI relevance | 8 | 9 |
| Quality | 7 | 9 |
| Pricing | freemium | freemium |
| Install | npm install @amplitude/analytics-node | npm install posthog-node |
Agent-friendliness signals
Only Amplitude API
No unique signals
Both
- ✓Official SDK
- ✓Env var auth
- ✓Headless compatible
- ✓JSON response
- ✓curl/CLI docs
- ✓Reasonable rate limits
Only PostHog API
- +Machine-readable pricing
Capabilities
Only Amplitude API
- • create cohorts
Both
- • track events
- • analyse user behaviour
- • run experiments
Only PostHog API
- • manage feature flags
When to choose each
Choose Amplitude API when...
- -Cohort analysis and behavioural analytics are best-in-class
- -Good free tier for startups
- -Strong experimentation and A/B testing integration
Choose PostHog API when...
- -Open source and self-hostable - no data leaves your infra
- -All-in-one: analytics, session replay, feature flags, A/B tests
- -Generous free tier on cloud (1M events/month)
Full scores
For full scoring details, install gotchas, and reviews:
Frequently asked questions
Which is better for AI agents - Amplitude API or PostHog API?
PostHog API scores higher overall (9/10 vs 7/10). PostHog API pulls ahead on Machine-readable pricing. For most agent use cases, start with PostHog API. Switch to Amplitude API if you specifically need its capabilities or you're already locked into its ecosystem.
Can I use Amplitude API and PostHog API together?
Technically yes - they're separate APIs, so nothing stops you from calling both. In practice, most teams pick one and stick with it to avoid maintaining two SDKs and two sets of API keys. The exception is if each one covers a use case the other doesn't.
What pricing model do Amplitude API and PostHog API use?
Amplitude API: freemium. PostHog API: freemium. For exact rates, check each provider's pricing page directly - prices change and we don't track real-time pricing here.