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Braintrust vs Fulcra

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Braintrust compared with Fulcra
DetailBraintrustFulcra
What it doesThe active observability platform for agents The user-owned context backend for AI agents
StageGrowing Growing
FoundedNot given Not given
Based inNot given US
Pricing modelfreemium freemium
PricingStarter plan free with $10 credits monthly, 1 GB processed data, 10k scores, 14-day retention. Pro plan $249/month with $100 credits, 5 GB processed data, 50k scores, 30-day retention. Enterprise with custom pricing. Overage charges at $4/GB for Starter and $3/GB for Pro on processed data. Not given
Key features
  • Real-time trace inspection
  • LLM scoring and evaluation
  • Production monitoring dashboards
  • Automated pattern detection
  • Dataset versioning and management
  • Prompt optimization with Loop agent
  • Natural language trace investigation
  • Custom annotation interfaces
  • Gateway API for unified access
  • Brainstore database for AI data
  • One user-owned context for every agent
  • Agents wake up to what changed since their last loop
  • Readable, traceable context with every change logged
  • End-to-end encryption with AES-256
  • Granular sharing controls with revocable access
  • Right to export, delete, and transparency
  • Context that travels across AI products and models
What makes it different
  • Built specifically for agents which fail differently than normal software
  • Automatic pattern discovery from production data
  • Framework agnostic with no vendor lock-in
  • Enterprise security with SOC 2 Type II and HIPAA compliance
  • Brainstore query engine for faster production debugging
  • User-owned context that travels with you across AI products
  • Traceable agent activity with full visibility and control
  • Agents coordinate through shared context without learning being trapped in silos
  • End-to-end encryption with no data selling
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)76 no change since last check26 no change since last check
Trust Flow (Majestic)2820
Citation Flow (Majestic)5140
Referring domains (Majestic)3530593

5 details filled in for both companies.

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