The short version
Read off braintrust.dev/pricing on 2026-11-02. Braintrust prices a subscription plus three metered dimensions, and the meters are printed openly for once.
| Plan | Subscription | Included credits | Processed data | Scores | Retention |
|---|---|---|---|---|---|
| Starter | $0/month | $10 credits + token rates | 1 GB, then $4/GB | 10k, then $2.50 per 1k | 14 days |
| Pro | $249/month | $100 credits + token rates | 5 GB, then $3/GB | 50k, then $1.50 per 1k | 30 days, then $0.50/GB/mo for longer |
| Enterprise | Custom | Custom | Custom | Custom | Custom |
Every plan includes unlimited users, projects, datasets, playgrounds and experiments, so there is no seat meter anywhere - the cost is entirely a function of how much you log and how much you score. The page also lists 6 to 12 months of Pro free for qualifying startups.
The overage arithmetic is the decision
Pro’s $249 buys 5 GB of processed data at the included rate. Every further gigabyte is $3, so a team logging 100 GB a month pays roughly $285 in data overage on top of the subscription - more than the plan itself. Starter’s overage is worse per unit ($4/GB) but its 1 GB allowance means the bill only becomes visible once you are already logging seriously.
Scores behave the same way at a smaller scale: $2.50 per thousand on Starter versus $1.50 on Pro. If your evaluation runs produce hundreds of thousands of scores a month, the 40% difference in the score rate is what decides the tier, not the headline subscription.
Retention is the third meter and the easiest to miss. Starter keeps 14 days; Pro keeps 30 and charges $0.50/GB/month to keep data longer. A team that needs a quarter of history to compare model versions is buying a storage product as well as an evaluation product.
What $249 actually buys beyond the meters
Three things appear only on Pro: custom charts, environments and role-based access control. Environments matter more than they sound - separating staging and production evaluation runs is the difference between a demo and a workflow a team trusts. RBAC is the feature that usually forces an upgrade in any company where more than one team touches evals.
Priority support is on the same line. None of these are metered, which makes them the honest reason to pay $249 a month even when your volume sits comfortably inside the included allowances.
What the page does not say
- No cap on the overage - processed data and scores bill linearly with no published ceiling.
- No definition of “processed data” on the pricing page (what counts as a GB is a docs question).
- No per-seat pricing at all, but also no stated limit on concurrency or evaluation parallelism.
FAQ
How much does Braintrust cost? Starter is $0 per month and Pro is $249 per month as captured 2026-11-02, with Enterprise on custom pricing.
Does Braintrust charge per seat? No. Unlimited users are included on every plan; the meters are credits, processed data, scores and retention.
What happens past the included processed data? Pro bills $3 per GB and Starter $4 per GB beyond the included 1 GB and 5 GB respectively.
Is there a startup discount? Yes - the page lists 6 to 12 months of Pro free for qualifying startups.