LangSmith
AI Agent & LLM Observability Platform
VS
Modal
High-performance AI infrastructure.
Detailed comparison
Criteria
LangSmith
Modal
Pricing
Freemium
Freemium
Plans & pricing
Developer: Free, Team: $39/mo, Enterprise: Custom
Starter: Free, Enterprise: Custom
Free trial
No
No
Audience
b2b
B2B
Platforms
Web
—
API
Yes
—
Open Source
Proprietary
—
Integrations
Pagerduty
—
Categories
Dev & Tech, information technology & services, Apps
Dev & Tech, AI & ML, Data & Analytics
Popularity
Very High
Moderate
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...
Modal provides a high-performance serverless platform designed for AI and data teams. It enables users to bring their own code and run CPU, GPU, and d...
Pricing
LangSmith
Freemium
Modal
Freemium
Plans & pricing
LangSmith
Developer: Free, Team: $39/mo, Enterprise: Custom
Modal
Starter: Free, Enterprise: Custom
Free trial
LangSmith
No
Modal
No
Audience
LangSmith
b2b
Modal
B2B
Platforms
LangSmith
Web
Modal
—
API
LangSmith
Yes
Modal
—
Open Source
LangSmith
Proprietary
Modal
—
Integrations
LangSmith
Pagerduty
Modal
—
Categories
LangSmith
Dev & Tech, information technology & services, Apps
Modal
Dev & Tech, AI & ML, Data & Analytics
Popularity
LangSmith
Very High
Modal
Moderate
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...
Modal
Modal provides a high-performance serverless platform designed for AI and data teams. It enables users to bring their own code and run CPU, GPU, and d...
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
Modal
Run CPU, GPU, and data-intensive compute at scale
Serverless platform for AI and data teams
Bring your own custom code
High-performance infrastructure
Simplified deployment and scaling
Key differentiators
LangSmith
- Complete AI agent & LLM observability
- Real-time tracing, debugging & evals
- Cost, latency & trajectory monitoring
Modal
Other comparisons
FAQ: LangSmith vs Modal
LangSmith: AI Agent & LLM Observability Platform. Modal: High-performance AI infrastructure.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Modal is freemium.
The best choice between LangSmith and Modal 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.
LangSmith is primarily designed for individuals, while Modal is built for businesses and professionals.
LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts. Modal offers: Run CPU, GPU, and data-intensive compute at scale, Serverless platform for AI and data teams, Bring your own custom code, High-performance infrastructure.
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.