Braintrust vs Comet Pricing (2026)
How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.
| Braintrust | Comet | |
|---|---|---|
| Starts at | $249/mo | $19/mo |
| Number of plans | 3 | 4 |
| Free plan | ||
| Free trial | — | |
| Pricing model | hybrid | hybrid |
Starter
- $10 credits
- 1 GB processed data
- 10k scores
- 14-day retention
- Unlimited users, projects, datasets, playgrounds, and experiments
Pro
Popular- $249 credits
- 5 GB processed data
- 50k scores
- 30-day retention
- Custom charts, environments, priority support, RBAC, and more
Enterprise
- Custom data retention and export, RBAC, and premium support with on-prem or hosted deployment for high volume or privacy-sensitive data.
Open Source
- Full AI observability & agent testing feature set
- True OSS: same codebase as the hosted versions
- Agent tracing & analysis
- Test Suites & assertions
- Agent Playground
Free Cloud
- Up to 10 team members
- 25k spans per month
- 60-day data retention
- Agent tracing & analysis
- Test Suites & assertions
- Agent Playground
- Ollie coding harness trial
Pro Cloud
Popular- Up to 50 team members
- 100k spans per month
- 60-day data retention
- Customizable monthly span limits
- Customizable data retention periods
Enterprise
- Unlimited team members
- Custom usage plans
- Flexible deployments
- Service accounts and view-only users
- Single sign-on
- Dedicated support and SLAs
- SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance
Braintrust vs Comet FAQ
- Which one is cheaper?
- Comet is the cheaper option, starting at $19/mo vs $249/mo for Braintrust.
- Can I use either one for free?
- Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
- How do they charge?
- Both use a hybrid model, so the comparison is straightforward — it comes down to features and limits at each price point.
- Which one is a better deal?
- Depends on what you need. Braintrust: At $249/mo flat for Pro, Braintrust sits mid-to-premium compared to open-source or DIY logging stacks, but it undercuts the fully custom enterprise observability players by keeping a transparent starting price public. They're clearly courting AI-native teams who've outgrown free tools but aren't ready for an enterprise sales cycle yet. Comet: At $19/mo for Pro, Comet undercuts most enterprise-first MLOps and LLM observability tools that gate everything behind a sales call — this is a land-and-expand play aimed at developers and small teams who'd otherwise bounce off a 'contact us' wall.
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