Braintrust vs Sensei
Braintrust
braintrust.devSensei
sensei.shSide by side
| Figure | Braintrust | Sensei |
|---|---|---|
| Price from | $249/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 4 | 0 |
| Spec score · AI Agent Evaluation Tools | 9.2 (#3) | 6.6 (#28) |
| Integrations | Braintrust describes its product as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more. | The repository documents HTTP, stdio, OpenAI-compatible, and LangServe adapters for connecting agents. |
| Intended users | Braintrust says its platform is for teams running agents in production, from early-stage shipping through enterprise scale. | Sensei is designed for people evaluating AI agents on real-world professional tasks using standardized benchmarks, scenarios, and measurable KPIs. |
Plans
In their own words
Braintrust
Braintrust is an observability platform for teams running AI agents in production. It lets teams inspect agent traces and tool calls while tracking latency, cost, and quality in real time. Users can evaluate datasets, compare prompts and models, and score outputs with LLMs, code, or human reviewers. Discovery tools surface patterns in production traces to help investigate agent behavior, and the Loop agent can run evaluations, generate test cases, and iterate on prompts autonomously. Braintrust lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more, and its MCP server lets coding agents query logs, run evaluations, and update prompts from an IDE. Security options listed include SSO, RBAC, and hybrid deployment; Braintrust states that it is SOC 2 Type II certified and GDPR and HIPAA compliant. Starter is free, with 1 GB processed data, 10,000 scores, and 14-day retention. Pro costs $249.00 per month; Enterprise pricing is custom.