STACKFOR

Braintrust

Braintrust

Evals, datasets, and tracing for LLM apps.

activeAgent fanBuilder
Open Braintrust

Evals, datasets, and tracing for LLM apps.

Provisional seed scores. Method seed-v0-provisional, confidence low, not hands-on tested. The band around a number is a ±8 display label, not a measured interval. Ordering uses the point estimate.

Pricing

Model
Freemium
Free plan
Yes
Cheapest monthly
$249/mo
Billing
Billing period not confirmed
Status
Read from the pricing page
Checked
Oct 16, 2026
Free tier
Free plan available.

Pricing page

The dollar amount is not a score. Rankings do not read it.

API flag: seed says yes. MCP flag: seed says yes. These flags are notes, not an audit.

Outbound link

No public affiliate program was recorded for this tool in the Oct 14, 2026 research, or it was not checked. Absence of a program does not change any score.

We may earn a commission if a tracking link is connected and you buy through it. It never changes ranks. In this v1 seed, tracking URLs are empty, so “Open site” goes to the vendor. Sponsorship rules.

Score per goal

  • StackFor agent evals and observability

    Evals · role rank 2

    Evals-first workflow with CI and human review.

    82

    74–90 · low confidence

    Goal fit25%
    90
    Output quality20%
    88
    Ease for vibe coders15%
    80
    Pricing and free tier15%
    62
    Integrations and API10%
    84
    Momentum10%
    86
    Community sentiment5%
    80
  • StackFor adding AI features to an existing app

    Observability · role rank 2

    Evals-first; strong when quality regressions matter.

    81

    73–89 · low confidence

    Goal fit25%
    84
    Output quality20%
    88
    Ease for vibe coders15%
    80
    Pricing and free tier15%
    62
    Integrations and API10%
    84
    Momentum10%
    86
    Community sentiment5%
    80
  • StackFor building a customer-support agent

    Evals · role rank 1

    Datasets of past tickets and scorers.

    81

    73–89 · low confidence

    Goal fit25%
    86
    Output quality20%
    88
    Ease for vibe coders15%
    80
    Pricing and free tier15%
    62
    Integrations and API10%
    84
    Momentum10%
    86
    Community sentiment5%
    80

Release log

No release on file. That is not the same as stale.

No score revisions on file. These seed scores have not been through the pipeline.