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 | usage-based | usage-based |
Starter
- Platform fee
- Topics
- Processed data
- Scores
- Users
- Projects
- Playgrounds
- Experiments
- Datasets
- Human review scores
- Saved table views
- Custom columns
- Custom trace views
- Included data retention
- OAuth sign-in
- Multi-factor authentication (MFA)
- SOC 2 Type II compliance
- Community support
Pro
- Platform fee
- Topics
- Processed data
- Scores
- Users
- Projects
- Playgrounds
- Experiments
- Datasets
- Human review scores
- Playground annotations
- Saved table views
- Custom columns
- Custom trace views
- Custom charts
- Environments
- Included data retention
- OAuth sign-in
- Multi-factor authentication (MFA)
- SOC 2 Type II compliance
- Role-based access control (RBAC)
- Data processing agreement (DPA)
- Community support
- Priority support
Enterprise
- Platform fee
- Topics
- Processed data
- Scores
- Users
- Projects
- Playgrounds
- Experiments
- Datasets
- Human review scores
- Loop agent
- Playground annotations
- Saved table views
- Custom columns
- Custom trace views
- Custom charts
- Environments
- Included data retention
- Custom policies
- S3 data export
- OAuth sign-in
- Multi-factor authentication (MFA)
- SOC 2 Type II compliance
- SAML single sign-on (SSO)
- Role-based access control (RBAC)
- Data processing agreement (DPA)
- Business associate agreement (BAA)
- Uptime service level agreement (SLA)
- Community support
- Priority support
- Shared Slack channel
- Guaranteed service level agreements (SLAs)
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 usage-based 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, they're priced accessibly for mid-stage AI teams but not trying to be the cheapest eval tool in the room — they're positioning against the 'build it yourself' crowd and tools like LangSmith or Weights & Biases. The startup discount (6–12 months free on Pro) signals they're actively trying to land early-stage AI companies before competitors do. Comet: At $19/mo entry, they're positioning as the accessible alternative to heavier MLOps platforms — clearly going after teams that find tools like Weights & Biases or Arize too expensive or too complex for pure LLM tracing use cases. The academic free Pro tier signals they're also playing a long game on developer mindshare.
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