LangSmith
AI Agent & LLM Observability Platform
VS
Respondable
Write better emails with real-time AI assistance
Detailed comparison
Criteria
LangSmith
Respondable
Pricing
Freemium
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
Data Science, Dev Tools
Writing, Productivity
Popularity
Very High
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...
Respondable is an AI-powered assistant for Gmail and Outlook that uses data-driven insights to help you write more effective, polite, and actionable e...
Pricing
LangSmith
Freemium
Respondable
Freemium
Plans & pricing
LangSmith
Developer: Free, Team: $39/mo, Enterprise: Custom
Respondable
—
Free trial
LangSmith
No
Respondable
—
Audience
LangSmith
b2b
Respondable
b2b
Platforms
LangSmith
Web
Respondable
—
API
LangSmith
Yes
Respondable
—
Open Source
LangSmith
Proprietary
Respondable
—
Integrations
LangSmith
Pagerduty
Respondable
—
Categories
LangSmith
Data Science, Dev Tools
Respondable
Writing, Productivity
Popularity
LangSmith
Very High
Respondable
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...
Respondable
Respondable is an AI-powered assistant for Gmail and Outlook that uses data-driven insights to help you write more effective, polite, and actionable e...
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
Respondable
Real-time email effectiveness scoring
Tone and sentiment analysis
Subject line optimization
Readability and word count tracking
Predictive response probability
Key differentiators
LangSmith
- Complete AI agent & LLM observability
- Real-time tracing, debugging & evals
- Cost, latency & trajectory monitoring
Respondable
Other comparisons
FAQ: LangSmith vs Respondable
LangSmith: AI Agent & LLM Observability Platform. Respondable: Write better emails with real-time AI assistance. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. LangSmith is freemium and Respondable is freemium.
The best choice between LangSmith and Respondable 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. Respondable offers: Real-time email effectiveness scoring, Tone and sentiment analysis, Subject line optimization, Readability and word count tracking.
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.