Cloudflare AI Gateway
Checked on 17 Oct 2026Free tier: Core features (analytics, caching, rate limiting, DLP) free on all plans; log storage on Workers Free: 100,000 logs total across all gateways.
- Auth: Cloudflare account; proxies your provider keys
- Serving public users: Yes.
- Note: Handy as a caching/rate-limit layer in front of free LLM APIs.
- Source: developers.cloudflare.com
Sentry
Checked on 17 Oct 2026Free tier: Developer plan free: one user, error monitoring and tracing, email alerts, 10 custom dashboards (event quotas on page).
- Auth: DSN (public key) + auth token
- Serving public users: Yes.
- Note: New users: 5,000 free session replays/month for first 3 months.
- Source: sentry.io
PostHog
Checked on 17 Oct 2026Free tier: Free every month (with or without card): 1M analytics events, 5K session recordings, 1M feature-flag requests, 100K exceptions, 1,500 survey responses, 1M rows data sources.
- Auth: Project API key (public) + personal API key
- Serving public users: Yes.
- Note: Includes LLM analytics/AI observability products.
- Source: posthog.com