Braintrust vs Confident AI
Both are eval frameworks tools. Here is how they actually differ on price, billing model and deployment.
Braintrust
The most complete eval-first platform - evals, experiments, CI/CD quality gates and observability in one system. The catch is a processed-data-GB billing meter that's uncapped and punishes verbose agents.
Confident AI
The commercial cloud layer over DeepEval. It recently moved from per-seat to flat per-organisation pricing at $200 and $2,000 a month - a change most third-party reviews have not caught up with.
| Braintrust | Confident AI | |
|---|---|---|
| Category | Eval Frameworks | Eval Frameworks |
| Our rating | 4/5 | 4/5 |
| Starting price | $249/mo | $200/mo per org |
| Billing meter | span | gb-month |
| Free plan | Yes | Yes |
| Free self-hosting | No or paid tier only | No or paid tier only |
| Best for | Teams that want turnkey regression testing and CI/CD quality gates without assembling the eval orchestration themselves | Teams already using DeepEval who need shared datasets, persistence, online evaluation and collaboration, and who are large enough that unlimited seats on a flat plan beats per-seat competitors. |
Our verdict on Braintrust
The best turnkey eval platform of the four - if regression testing and blocking bad merges is your priority, nothing else is this complete out of the box. The gotcha is the billing model - processed data is metered by the byte with no spending cap, so the verbose agents and large RAG contexts that most need observability are exactly what blows up the bill. Watch the meter, or the $249 plan won't stay $249.
Full Braintrust review →Our verdict on Confident AI
Confident AI is the managed layer over DeepEval, and the most useful thing to know about it right now is that its pricing changed and most of the internet has not noticed. It now bills flat per organisation - $200 a month for Starter with unlimited seats and 5 GB-months, $2,000 for Team with 75 GB-months - having previously used a per-seat model that third-party reviews still quote at figures like $19.99 or $49.99 per seat. If you are comparison shopping from review sites you are working from stale numbers. The new model is genuinely favourable for larger teams, because unlimited seats on a flat plan beats per-seat pricing badly once you have more than a handful of engineers, and traces are unlimited on every tier with billing on stored data instead. The underlying DeepEval framework is Apache 2.0 and free, so your evaluation logic stays portable, and a self-hosted option exists. The main structural criticism is the 10x gap between Starter and Team with nothing published in between.
Full Confident AI review →Frequently Asked Questions
What is the main difference between Braintrust and Confident AI?
Braintrust: Teams that want turnkey regression testing and CI/CD quality gates without assembling the eval orchestration themselves Confident AI: Teams already using DeepEval who need shared datasets, persistence, online evaluation and collaboration, and who are large enough that unlimited seats on a flat plan beats per-seat competitors. Both sit in Eval Frameworks, so the decision usually comes down to billing model and deployment rather than raw capability.
Which is cheaper, Braintrust or Confident AI?
It depends entirely on your workload shape, because they meter differently - Braintrust bills on span and Confident AI bills on gb-month. Published starting prices are $249/mo and $200/mo per org respectively, but those numbers are not comparable until you apply them to the same traffic. Use our cost calculator to model both against your own request volume and span count.
Can I self-host Braintrust or Confident AI?
Braintrust: No or paid tier only. Confident AI: No or paid tier only. Free self-hosting means no licence fee, not no cost - you still own the infrastructure, upgrades and on-call.