PostHog vs Sonar (Perplexity) — Pricing, Plans, and Verified Costs (2026)
PostHog starts at Free. Sonar (Perplexity) uses custom pricing — request a quote to compare.
See price history: PostHog · Sonar (Perplexity)
How pricing works
These two tools don't price the same way, so the headline numbers below aren't directly comparable until you plug in your own volume.
- PostHog (Per Usage) — PostHog bills purely on usage — Free up to 1M events/mo, then usage-based. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
- Sonar (Perplexity) (Per Usage) — Sonar (Perplexity) bills purely on usage. There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
Per-minute, per-credit and per-token rates exclude any downstream model, speech or telephony costs unless the vendor states otherwise.
Open-source product analytics + feature flags + session replay + surveys, positioned as the all-in-one alternative to Mixpanel + LaunchDarkly + FullStory + Typeform. Distinctive for self-hostable free tier (unlimited events on your infra) and its "we're the open-source everything" positioning. Cloud priced free-$450+/mo based on events + recordings. Popular with technical founders who don't want to stitch 4 tools together and prefer OSS over vendor lock-in.
Perplexity Sonar — the API version of Perplexity's search + reasoning models, priced for developers embedding real-time web-grounded answers into apps. Pricing: Sonar $1/M input + $1/M output tokens + $5/1K searches; Sonar Pro $3/M input + $15/M output + $5/1K searches; Sonar Reasoning $1/M in + $5/M out; Sonar Deep Research $2/M in + $8/M out + $5/1K searches. Popular with developers building AI apps that need real-time web grounding.
All plans compared
| Tier role | Plan | PostHog monthly | PostHog annual | Sonar (Perplexity) monthly | Sonar (Perplexity) annual |
|---|---|---|---|---|---|
| Free / starter | Free / Sonar | Free | Free | Free | Free |
| Entry paid | Boost add-on / — | $250 | — | — | — |
| Pro / power | Scale add-on / — | $750 | — | — | — |
| Enterprise | Enterprise add-on / — | $2000 | Custom | — | — |
Tier names differ across vendors. Rows are aligned by tier role, not name. Full tier structures on each tool's page.
What each is best for
PostHog is worth it if… product/growth teams that want product analytics + session replay + feature flags + A/B testing + surveys in one open-source platform — particularly if you value self-host option and pay-as-you-go pricing. Free tier includes 1M events + 5K replays/mo; pay-as-you-go beyond; add-ons for SSO/security/data warehouse.
Sonar (Perplexity) is worth it if… Sonar is worth it for developers who want ChatGPT-quality answers grounded in current web results without building their own search + scrape + rerank pipeline. Base Sonar ($1/M tokens) is one of the cheapest real-time-web-grounded LLM APIs.
Bottom line: Similar positioning, closer to a preference call than a strategic one.
Choose PostHog over Sonar (Perplexity) if…
Choose PostHog if…
- You want to pay only for actual usage (per usage, a free entry tier).
- You match the profile PostHog is built for: product/growth teams that want product analytics + session replay + feature flags + A/B testing + surveys in one open-source platform — particularly if you value self-host option and pay-as-you-go pricing.
- You need a general-purpose analytics & data option rather than a vertical-specific one.
Choose Sonar (Perplexity) if…
- You want to pay only for actual usage (per usage, custom pricing).
- You match the profile Sonar (Perplexity) is built for: Sonar is worth it for developers who want ChatGPT-quality answers grounded in current web results without building their own search + scrape + rerank pipeline.
- You need a general-purpose analytics & data option rather than a vertical-specific one.
At a glance
| PostHog | Sonar (Perplexity) | |
|---|---|---|
| Free plan | Yes | No |
| Entry price | Free | Custom |
| Enterprise available | Yes | No |
| Pricing model | Per Usage | Per Usage |
| Last verified | September 12, 2026 | — |
| Full pricing | View full pricing | View full pricing |
Pricing last verified September 12, 2026. Tracked daily.