LangSmith
AI Agent & LLM Observability Platform
VS
UserTesting AI
AI-Powered UX Platform for Human Insights
Detailed comparison
Criteria
LangSmith
UserTesting AI
Pricing
Freemium
Enterprise
Plans & pricing
Developer: Free, Team: $39/mo, Enterprise: Custom
Starter Edition: Custom, Advanced: Custom, Ultimate: Custom, Ultimate Unlimited: Custom, Startup: Custom, Professional: Custom, Premium: Custom
Free trial
No
Yes
Audience
b2b
b2b
Platforms
Web
Web, Ios, Android
API
Yes
No
Open Source
Proprietary
Proprietary
Integrations
Pagerduty
—
Categories
Dev & Tech, information technology & services, Apps
AI & ML, information technology & services, User testing
Popularity
Very High
Very High
Description
LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find fail...
UserTesting AI processes multiple data streams—video, audio, text, and behavioral data—to uncover contextual insights you would have missed otherwise....
Pricing
LangSmith
Freemium
UserTesting AI
Enterprise
Plans & pricing
LangSmith
Developer: Free, Team: $39/mo, Enterprise: Custom
UserTesting AI
Starter Edition: Custom, Advanced: Custom, Ultimate: Custom, Ultimate Unlimited: Custom, Startup: Custom, Professional: Custom, Premium: Custom
Free trial
LangSmith
No
UserTesting AI
Yes
Audience
LangSmith
b2b
UserTesting AI
b2b
Platforms
LangSmith
Web
UserTesting AI
Web, Ios, Android
API
LangSmith
Yes
UserTesting AI
No
Open Source
LangSmith
Proprietary
UserTesting AI
Proprietary
Integrations
LangSmith
Pagerduty
UserTesting AI
—
Categories
LangSmith
Dev & Tech, information technology & services, Apps
UserTesting AI
AI & ML, information technology & services, User testing
Popularity
LangSmith
Very High
UserTesting AI
Very High
Description
LangSmith
LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find fail...
UserTesting AI
UserTesting AI processes multiple data streams—video, audio, text, and behavioral data—to uncover contextual insights you would have missed otherwise....
Features
LangSmith
Cost tracking
Online LLM-as-judge and code evals
Tool and agent trajectory monitoring
Webhook and Pagerduty alerts
Message threading for multi-turn chat interactions
Templates for error analysis
UserTesting AI
AI Insight summary
AI survey themes
Friction detection
Sentiment analysis
Key differentiators
LangSmith
- Complete AI agent & LLM observability
- Real-time tracing, debugging & evals
- Cost, latency & trajectory monitoring
UserTesting AI
- AI-powered insights at scale
- Multi-stream data analysis
Other comparisons
FAQ: LangSmith vs UserTesting AI
LangSmith: AI Agent & LLM Observability Platform. UserTesting AI: AI-Powered UX Platform for Human Insights. Both tools take different approaches to address similar needs.
LangSmith offers a freemium plan, while UserTesting AI is a contact tool.
The best choice between LangSmith and UserTesting AI depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Both are primarily designed for individuals. The choice depends on which specific features you need.
LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts. UserTesting AI offers: AI Insight summary, AI survey themes, Friction detection, Sentiment analysis.
Based on our data, LangSmith currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.