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LangWatch vs Respan®

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

LangWatch compared with Respan®
DetailLangWatchRespan®
What it doesAI agent testing and evaluation that turns unpredictable agents into reliable production systems Route, monitor, and evaluate every agent run
StageGrowing Growing
FoundedNot given Not given
Based inNL Not given
Pricing modelfreemium freemium
PricingFree Developer plan forever with 50k events/month. Growth plan at €29/core-seat/month with 200k included events, then €5 per 100k additional events. Storage €3/GB beyond 30-day included retention. Enterprise with custom pricing. Free plan with 100k logs and 1k scores; Team plan at $199/month with unlimited datasets and evaluators; Enterprise plan with custom pricing.
Key features
  • Agent simulations with simulated users
  • Red teaming and adversarial testing
  • LLM-based evaluation and scoring
  • Full production observability and tracing
  • Prompt versioning and A/B testing
  • Voice agent simulation and testing
  • Multi-modal evaluation
  • OpenTelemetry native instrumentation
  • Claude Code usage tracking
  • Enterprise SSO and RBAC
  • Agent Tracing
  • Multi-Model Routing
  • Automatic Fallbacks
  • Real-time Monitoring
What makes it different
  • Works framework-agnostically with any agent framework without rewrite
  • Simulations with real user behavior from scenario descriptions
  • Fully automated testing from PM goals to pull requests with Langy
  • Self-hosted, hybrid, or cloud deployment with full control
  • Production traces queryable at search speed with AI search
  • Complete request tracing from LLM calls to agent steps
  • Automated evaluations with LLM judges and human review
  • Production-grade observability handling 80 trillion+ tokens
  • Enterprise security with SOC 2, GDPR, and HIPAA compliance
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)53 no change since last check60 no change since last check
Trust Flow (Majestic)2525
Citation Flow (Majestic)4543
Referring domains (Majestic)852689

6 details filled in for both companies.

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