LangWatch vs Retell AI

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 Retell AI
Detail	LangWatch	Retell AI
What it does	AI agent testing and evaluation that turns unpredictable agents into reliable production systems	AI Voice Agent Platform for Phone Call Automation
Stage	Growing	Established
Founded	Not given	Not given
Based in	NL	Not given
Pricing model	freemium	usage-based
Pricing	Free 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.	$0.07-$0.31 per minute for voice agents, $0.002+ per message for chat agents, with $10 free credits at signup and no annual contract.
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	Call transfer between human and AI Book appointments and check availability Knowledge base integration Navigate IVR and handle keypad menus Batch call campaigns and outbound dialing Post-call analysis and transcripts AI quality assurance monitoring Drag-and-drop call flow builder Simulation testing and regression testing
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	95.7% workflow accuracy benchmarked ahead of 6 platforms ~600ms latency with industry-leading responsiveness Proprietary turn-taking model that knows when to stop and listen Full platform access with no feature gating from day one Production-ready no-code agent builder your team can operate
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	53 no change since last check	77 no change since last check
Trust Flow (Majestic)	25	31
Citation Flow (Majestic)	45	52
Referring domains (Majestic)	852	3856

6 details filled in for both companies.

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