Compare · llm & agent observability
Braintrust vs PostHog pricing
At 1M traces/month, Braintrust is the cheaper list price ($36.00 vs $450).
| Braintrust | PostHog | |
|---|---|---|
| Free tier | Starter: $0/mo, 1 GB processed data and 10K scores/month, unlimited users. | 1M analytics events, 5K session recordings, 100K AI-observability events, 1M feature-flag requests per month (resets monthly). |
| Billing unit (LLM & agent observability) | GB | AI events |
| First paid plan | Pro: $249/mo | Pay-as-you-go: $0 base + usage |
| Pricing data | Published pricing | Published pricing |
| Company status | Active | Active |
| Open source / self-host | No / No | Yes / Yes |
| Last checked | 2026-10-19 | 2026-10-19 |
LLM & agent observability: estimated monthly cost
| traces / month | Braintrust | PostHog |
|---|---|---|
| 100K | $0 Starter | $68.00 Pay-as-you-go |
| 1M | $36.00 Starter | $450 Pay-as-you-go |
| 10M | $396 Starter | $3,930 Pay-as-you-go |
Estimate, check vendor page. Figures are list prices computed from publicly posted pricing on the "last checked" date. They exclude taxes, discounts, add-ons, seats and contract terms unless stated. Always confirm on the vendor's own pricing page.
Plans side by side
| Braintrust | |
|---|---|
| Starter | $0/mo 1 GB, then $4/GB; 10K scores, then $2.50/1K; $10 credits |
| Pro | $249/mo 5 GB, then $3/GB; 50K scores, then $1.50/1K; $100 credits |
| Enterprise | Contact sales |
| PostHog | |
|---|---|
| Free | $0 Usage stops at free-tier limits. |
| Pay-as-you-go | $0 base + usage Per-product graduated rates above the free allowance; billing limits per product. |
Recent news
Sources
- Braintrust pricing page retrieved 2026-10-19
- PostHog pricing page retrieved 2026-10-19
- PostHog pricing data (page-data JSON) retrieved 2026-10-19