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LangWatch vs onomeo

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 onomeo
DetailLangWatchonomeo
What it doesAI agent testing and evaluation that turns unpredictable agents into reliable production systems One free key. Dozens of AI models.
StageGrowing Beta
FoundedNot given Not given
Based inNL Not given
Pricing modelfreemium Not given
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. Not given
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
  • OpenAI-compatible API
  • Free models with call limits
  • Browser chat interface
  • Credit-based billing for premium models
  • Integration with multiple tools
  • Daily check-in credits
  • No-expiry purchased credits
  • Code examples for multiple languages
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
  • One API key works with dozens of models
  • No credit card required to start
  • Credits never expire
  • One-time purchase instead of subscription
  • Compare responses from multiple models side-by-side
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 checkNot checked yet no change since last check
Trust Flow (Majestic)255
Citation Flow (Majestic)4524
Referring domains (Majestic)85251

4 details filled in for both companies.

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