js2ts
Convert JavaScript to TypeScript instantly
VS
LangSmith
AI Agent & LLM Observability Platform
Detailed comparison
Criteria
js2ts
LangSmith
Pricing
Free
Freemium
Plans & pricing
—
Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
—
No
Audience
b2b
b2b
Platforms
—
Web
API
—
Yes
Open Source
—
Proprietary
Integrations
—
Pagerduty
Categories
Code conversions, Dev Tools
Data Science, Dev Tools
Popularity
Moderate
Very High
Description
A developer tool designed to streamline the migration of projects from JavaScript to TypeScript by automatically inferring types and rewriting syntax.
LangSmith is a comprehensive AI agent and LLM observability platform. It provides tracing and real-time monitoring to help developers debug agents, id...
Pricing
js2ts
Free
LangSmith
Freemium
Plans & pricing
js2ts
—
LangSmith
Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
js2ts
—
LangSmith
No
Audience
js2ts
b2b
LangSmith
b2b
Platforms
js2ts
—
LangSmith
Web
API
js2ts
—
LangSmith
Yes
Open Source
js2ts
—
LangSmith
Proprietary
Integrations
js2ts
—
LangSmith
Pagerduty
Categories
js2ts
Code conversions, Dev Tools
LangSmith
Data Science, Dev Tools
Popularity
js2ts
Moderate
LangSmith
Very High
Description
js2ts
A developer tool designed to streamline the migration of projects from JavaScript to TypeScript by automatically inferring types and rewriting syntax.
LangSmith
LangSmith is a comprehensive AI agent and LLM observability platform. It provides tracing and real-time monitoring to help developers debug agents, id...
Features
js2ts
Automatic type inference
Syntax conversion
Online code editor
Instant code transformation
LangSmith
SDKs for Python, TypeScript, Go, and Java
Message threading for multi-turn chat interactions
Cost tracking
Online LLM-as-judge and code evals
Tool and agent trajectory monitoring
Webhook and Pagerduty alerts
Key differentiators
js2ts
LangSmith
- Complete AI agent & LLM observability
- Real-time tracing, debugging & evals
- Cost, latency & trajectory monitoring
Other comparisons
FAQ: js2ts vs LangSmith
js2ts: Convert JavaScript to TypeScript instantly. LangSmith: AI Agent & LLM Observability Platform. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. js2ts is free and LangSmith is freemium.
The best choice between js2ts and LangSmith 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.
js2ts offers: Automatic type inference, Syntax conversion, Online code editor, Instant code transformation. LangSmith offers: SDKs for Python, TypeScript, Go, and Java, Message threading for multi-turn chat interactions, Cost tracking, Online LLM-as-judge and code evals.
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.