Yes, Braintrust has a permanent free tier alongside its paid plans. The free plan includes $10 model credits per month included, plus token rates, 1 GB processed data per month included, then $4/GB, and 10,000 scores per month included, then $2.50 per 1,000.
About
Braintrust is an observability and evaluation platform for AI agents. It collects production traces, prompts, responses, and tool calls, then lets teams search logs, inspect latency and cost, and score outputs with LLMs, code, or human review.
The platform also supports experiment workflows for comparing prompts and models, turning production traces into eval datasets, and applying quality gates and alerts. The pricing page lists a Starter plan at $0 per month with $10 in model credits, 1 GB of processed data, 10K scores, 14-day retention, and unlimited users, projects, datasets, playgrounds, and experiments.
- Production trace inspection
- Prompt, response, and tool-call logging
- 1 GB processed data included
- 10K scores per month included
- 14-day data retention
- Unlimited users and projects
- Eval datasets and experiments
- Quality gates and alerts
Free Tier Value
This free tier is genuinely usable and does not require a credit card, but it is still capped on credits, processed data, scores, and retention. The included $10 of monthly model credits is the main dollar value driver, so the tier is worth about $10/month overall; that is only about 4% of the $249 Pro plan, with most of the paid-plan value coming from higher limits and pro-only features.
What's included in the free tier
Verified
- $10 model credits per month included, plus token rates.
- 1 GB processed data per month included, then $4/GB.
- 10,000 scores per month included, then $2.50 per 1,000.
- 14-day data retention included.
- Unlimited users, projects, datasets, playgrounds, and experiments.
- 1 human review score per project included.
- OAuth sign-in included.
- Community support included.
See Braintrust pricing for current limits.
Paid plans
Pro
- model credits
- $100/month included
- processed data
- 5 GB/month included
- scores
- 50k/month included
- data retention
- 30 days included
- $100 model credits/month
- 5 GB processed data/month
- 50k scores/month
- 30-day retention
- Custom charts
- Environments
- Priority support
- RBAC
Enterprise
- data retention
- Custom
- deployment
- On-prem or hosted
- support
- Premium
- Custom data retention and export
- RBAC
- Premium support
- On-prem or hosted deployment
- High-volume support
- Privacy-sensitive deployment
Pricing extracted from Braintrust's pricing page. Always verify current pricing before committing.
Common questions
Is Braintrust free forever?
Yes. Braintrust has a permanent free tier alongside its paid plans, though the allowance typically resets each month.
Does Braintrust require a credit card?
No. You can start on Braintrust's free tier without entering card details.
What happens when you exceed Braintrust's free tier?
You move to a paid plan. Braintrust's cheapest paid plan is Pro at $249 / month.
What is Braintrust's free tier worth?
Braintrust's free tier is worth about $10 per month. That maps to an FTV score of 59/100. The FTV score is explained at freetier.co/ftv.
