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LangWatch vs telemetry.dev

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 telemetry.dev
DetailLangWatchtelemetry.dev
What it doesAI agent testing and evaluation that turns unpredictable agents into reliable production systems Traces, tokens, and cost for every AI app.
StageGrowing Not given
FoundedNot given Not given
Based inNL US
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. 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
  • Trace inspection for model calls and tool steps
  • Token usage and cost tracking
  • Error and latency analysis
  • Cost comparison by model and provider
  • Data capture and redaction controls
  • TypeScript SDK
  • Python SDK
  • OpenTelemetry/OTLP integration
  • Trace search and filtering
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
  • Built on OpenTelemetry standard
  • Automatic cost calculation from token usage
  • Support for multiple language SDKs and frameworks
  • Privacy controls for prompt and completion storage
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 check12 no change since last check
Trust Flow (Majestic)2521
Citation Flow (Majestic)4526
Referring domains (Majestic)85290

5 details filled in for both companies.

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