Braintrust

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Score6.8

Rank#12 of 32

From$249/mo

Free planYes

Runs onAPI, Self-hosted, Web

Summary

Braintrust is an observability platform for teams improving AI agents that run in production. It lets users inspect agent traces and tool calls while tracking latency, cost, and quality in real time. Teams can evaluate datasets, compare prompts and models, and score outputs with LLMs, code, or human reviewers. Discovery tools help find patterns in production traces, and the Loop agent can run evaluations, generate test cases, and iterate on prompts autonomously. Braintrust describes the platform as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more. Its MCP server lets coding agents query logs, run evaluations, and update prompts from an IDE. Braintrust states that it is SOC 2 Type II certified and GDPR and HIPAA compliant, and offers SSO, RBAC, and hybrid deployment options. The free Starter plan includes 1 GB of processed data, 10,000 scores, and 14-day retention. Pro costs $249.00 per month, with additional charges beyond some usage limits.

Who it is for

Braintrust is for teams running AI agents in production, from early-stage projects to enterprise operations. It suits teams that need to examine traces, evaluate outputs, and refine prompts or models.

What is good

Tracks latency, cost, and quality in real time.
Evaluations can use LLMs, code, or human reviewers.
Loop agent can generate test cases and iterate prompts.
SDKs are listed for Python, TypeScript, Go, Ruby, and C#.
Starter includes unlimited users and projects.

What to know first

Starter includes one human review score per project.
Starter retention is 14 days.
Pro has usage limits and charges beyond some included amounts.
Enterprise pricing is custom and not listed.

Verdict

Braintrust brings production trace inspection, evaluation, and prompt iteration into one platform for agent teams. Starter offers a free way to begin, while Pro raises included limits and adds features such as priority support and RBAC.

Braintrust plans and pricing

All plans

Starter Free billed monthly 1 GB processed data · 10,000 scores · 14-day retention · Unlimited users · Unlimited projects · Unlimited datasets braintrust.dev · 20 Sept 2026

Pro $249/mo $100 credits + tok rates · 5 GB processed data, then +$3/GB · 50k scores, then $1.50/1k · 30-day retention, then $0.50/GB/mo · custom charts, environments, priority support, RBAC braintrust.dev · 29 Sept 2026

Starter Not published $10 credits + tok rates · 1 GB processed data, then +$4/GB · 10k scores, then $2.50/1k · 14-day retention · unlimited users, projects, datasets, playgrounds, experiments braintrust.dev · 29 Sept 2026

Enterprise Not published Custom pricing · custom retention and export · RBAC · premium support · on-prem or hosted deployment braintrust.dev · 29 Sept 2026

Compared on AI agent observability tools

Free plan: Yesbraintrust.dev
Paid from: $249/mobraintrust.dev

Facts

Product: Braintrust describes itself as an active observability platform for AI agents that helps teams inspect production behavior and improve agent quality.braintrust.dev · 29 Sept 2026
Tracing: The platform lets users inspect agent traces and tool calls and track latency, cost, and quality in real time.braintrust.dev · 29 Sept 2026
Evaluations: Users can run experiments against datasets, compare prompts and models, and score outputs with LLMs, code, or humans.braintrust.dev · 29 Sept 2026
Discovery: Braintrust says its discovery tools identify patterns in production traces and help teams investigate agent behavior.braintrust.dev · 29 Sept 2026
Loop agent: The Loop agent can run evaluations, generate test cases, and iterate on prompts autonomously.braintrust.dev · 29 Sept 2026
Integrations: Braintrust describes its product as framework agnostic and lists native SDKs for Python, TypeScript, Go, Ruby, C#, and more.braintrust.dev · 29 Sept 2026
MCP: Braintrust's MCP server connects coding agents to its AI stack so users can query logs, run evals, and update prompts from an IDE.braintrust.dev · 29 Sept 2026
Security: Braintrust states that it is SOC 2 Type II certified and GDPR and HIPAA compliant, and offers SSO, RBAC, and hybrid deployment options.braintrust.dev · 29 Sept 2026
Data controls: The pricing page lists custom retention policies and S3 trace export as Enterprise features.braintrust.dev · 29 Sept 2026
Support: The pricing page lists community support, priority support, and shared Slack channel support across its plans.braintrust.dev · 29 Sept 2026
Plan limits: Starter includes one human review score per project, while Pro and Enterprise include unlimited human review scores.braintrust.dev · 29 Sept 2026
Intended users: Braintrust says its platform is for teams running agents in production, from early-stage shipping through enterprise scale.braintrust.dev · 29 Sept 2026