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Software Development · head to head

Braintrust vs Elastic Stack

Braintrust logo

Braintrust

Software Development

The active observability platform for agents

From
Free
Rated
-
Full reviewWebsite
Elastic Stack logo

Elastic Stack

Logging

Search, Observability, and Security Solutions

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Braintrust has a free tier, so it costs nothing to try first.
  • Each has a real cost: Braintrust enterprise plan pricing not published, requires custom quote; Elastic Stack self-managed deployment requires licensing based on node count and RAM usage

Where they differ

Only the attributes on which Braintrust and Elastic Stack actually diverge.

Attributes where Braintrust and Elastic Stack differ
AttributeBraintrustElastic Stack
Starting priceFreeOn request
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebCloud-hosted, Self-managed, Docker, Kubernetes (ECK)
CategorySoftware DevelopmentLogging
FoundedUnknown2011

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Braintrust

Nothing recorded that Elastic Stack does not also cover.

Only in Elastic Stack

  • Full-text search
  • Log analytics
  • Security monitoring
  • Alerting
  • API
  • Webhooks
  • REST
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Braintrust

  • Monitoring production AI agents for qualitynot Elastic Stack
  • Detecting patterns in agent failuresnot Elastic Stack
  • Defining quality expectations before shipping agentsnot Elastic Stack
  • Tracking prompts and tool calls in productionnot Elastic Stack

Elastic Stack

  • Distributed search and analytics engine for production-scale workloadsnot Braintrust
  • Full-text search and vector search with approximate nearest neighbour supportnot Braintrust
  • Security event tracking with field-level and document-level access controlnot Braintrust
  • Machine learning capabilities including anomaly detection and forecastingnot Braintrust

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Braintrust

  • Enterprise plan pricing not published, requires custom quote
  • Pro plan includes 6-12 months free discount for startups only

Elastic Stack

  • Self-managed deployment requires licensing based on node count and RAM usage
  • Serverless option has pending features including traffic filtering and bring-your-own-key encryption
  • Hosted deployment requires custom resource configuration for cluster management
  • Pricing models differ significantly across Hosted, Serverless, and Self-managed options

Pricing, plan by plan

Braintrust

Free
  • StarterFree
    • $10 model credits monthly included
    • 1 GB processed data monthly
    • 10000 scores monthly
  • Pro$249/month
    • $249 model credits monthly included
    • 5 GB processed data monthly
    • 50000 scores monthly
  • Enterprise$null/month
    • Custom data retention and export capabilities
    • RBAC and premium support
    • On-premises or hosted solutions available

Elastic Stack

On request

No published plan breakdown. See the Elastic Stack review.

Which should you pick?

Choose Braintrust if

  • You want to start without paying.
Braintrust review

Choose Elastic Stack if

  • You need full-text search.
  • You work on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK).
  • You also want log analytics.
Elastic Stack review

Questions people ask

Is Braintrust or Elastic Stack better?
Neither clearly leads. Braintrust starts at Free and Elastic Stack at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Braintrust or Elastic Stack?
Braintrust has a free tier; the other does not. Paid plans start at Free for Braintrust and On request for Elastic Stack.
Does Braintrust or Elastic Stack run on more platforms?
Braintrust runs on Web. Elastic Stack runs on Cloud-hosted, Self-managed, Docker, Kubernetes (ECK).
Can I use Braintrust for free?
Yes. Braintrust has a free tier, so you can try it without paying. Elastic Stack starts at On request.
What is Braintrust best used for?
Braintrust is most often used for monitoring production ai agents for quality, detecting patterns in agent failures, defining quality expectations before shipping agents, tracking prompts and tool calls in production. Of those, monitoring production ai agents for quality and detecting patterns in agent failures are not what Elastic Stack is typically brought in for.
What can Braintrust do that Elastic Stack cannot?
Elastic Stack covers Full-text search, Log analytics, Security monitoring, Alerting.

Answered from the vendors’ own pages

Braintrust: Does Braintrust have a free plan?

Braintrust Starter plan is free and includes $10 model credits monthly, 1 GB processed data, 10000 scores monthly, and 14-day data retention with unlimited users and projects. No credit card required.

Source
Elastic Stack: How much does Elastic Stack cost?

Elastic does not publish specific pricing on the Elastic Stack product page. Users can start a 14-day free trial with no credit card required, but ongoing subscription pricing requires contacting their sales team.

Source
Braintrust: How much does the Braintrust Pro plan cost?

Braintrust Pro plan costs $249 per month and includes $249 model credits, 5 GB processed data, 50000 scores monthly, and 30-day data retention. Qualifying startups receive 6-12 months free.

Source
Elastic Stack: What deployment options are available for Elastic Stack?

Users can deploy Elastic Stack on Elastic Cloud (hosted on AWS, Google Cloud, or Azure) or download it for self-managed deployment. Pricing for managed cloud hosting must be obtained by starting a trial or contacting sales.

Source
Braintrust: What are Braintrust's overage charges?

Braintrust charges overage rates after monthly allocations: model credits beyond monthly allotment are charged at token rates, data overage is $4 per GB on Starter or $3 per GB on Pro, scores overage is $2.50 per 1000 on Starter or $1.50 per 1000 on Pro. Extended data retention beyond the included period costs $0.50 per GB per month.

Source
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