Side by side
Agenta vs Braintrust
Both stand on ai agent observability tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source APISelf-hostedWeb
Agenta combines agent-building, automation, and run observability, with both cloud and self-hosted options. Account for run limits, provider charges, and infrastructure responsibilities when selecting an approach.
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Free plan APISelf-hostedWeb
Braintrust combines production trace inspection with dataset evaluations and prompt iteration. Its free Starter plan has defined data and score limits, while Pro and Enterprise provide further plan options.
Visit BraintrustThe facts
| Agenta | Braintrust | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | No |
| Runs on | API, Self-hosted, Web | API, Self-hosted, Web |
| Lowest paid plan | Pro: $29 a month | Pro: $249 a month |
| Plans published | 8 | 3 |
| Maker | Not published | Not published |
| Website | agenta.ai | braintrust.dev |
| On ai agent observability tools | #1 of 31 | #13 of 31 |
Agenta: what it does well
- Free cloud plan includes 5,000 monthly runs
- Supports more than 1,000 integrations
- Offers self-hosting and data-location control
- Mobile app supports conversations and tool approvals
What to know first
- Hobby runs stop at 5,000 per month
- Model-provider charges are separate
- Self-hosted users manage upgrades and backups
Braintrust: what it does well
- Tracks latency, cost, and quality in real time.
- Compares prompts and models against datasets.
- Loop agent can generate test cases autonomously.
- Native SDKs include Python, TypeScript, Go, Ruby, and C#.
- Offers SSO, RBAC, and hybrid deployment options.
What to know first
- Starter includes one human review score per project.
- Starter retains data for 14 days.
- Pro costs $249 a month.
- Enterprise pricing is custom and not listed.
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