Apollo.io
AI sales platform for B2B prospecting, lead gen, and deal automation.
VS
LangSmith
AI Agent & LLM Observability Platform
Detailed comparison
Criteria
Apollo.io
LangSmith
Pricing
Freemium
Freemium
Plans & pricing
Free: Free
Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
No
No
Audience
b2b
b2b
Platforms
Web
Web
API
No
Yes
Open Source
Proprietary
Proprietary
Integrations
—
Pagerduty
Categories
Sales, Marketing
Data Science, Dev Tools
Popularity
Very High
Very High
Description
Apollo.io is an AI sales platform designed to accelerate B2B sales. It provides solutions for prospecting, lead generation, and deal automation, helpi...
LangSmith is a complete AI agent and LLM observability platform. It offers tracing and real-time monitoring to help developers debug agents, find fail...
Pricing
Apollo.io
Freemium
LangSmith
Freemium
Plans & pricing
Apollo.io
Free: Free
LangSmith
Developer: Free, Team: $39/mo, Enterprise: Custom
Free trial
Apollo.io
No
LangSmith
No
Audience
Apollo.io
b2b
LangSmith
b2b
Platforms
Apollo.io
Web
LangSmith
Web
API
Apollo.io
No
LangSmith
Yes
Open Source
Apollo.io
Proprietary
LangSmith
Proprietary
Integrations
Apollo.io
—
LangSmith
Pagerduty
Categories
Apollo.io
Sales, Marketing
LangSmith
Data Science, Dev Tools
Popularity
Apollo.io
Very High
LangSmith
Very High
Description
Apollo.io
Apollo.io is an AI sales platform designed to accelerate B2B sales. It provides solutions for prospecting, lead generation, and deal automation, helpi...
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...
Features
Apollo.io
Outbound Prospecting
Inbound Lead Qualification
Data Enrichment
Deal Execution
AI Assistant
Chrome Extension
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
Key differentiators
Apollo.io
- AI sales platform for B2B prospecting
- Comprehensive lead generation & deal automation
- Smart data for faster deal closing
LangSmith
- Complete AI agent & LLM observability
- Real-time tracing, debugging & evals
- Cost, latency & trajectory monitoring
Other comparisons
FAQ: Apollo.io vs LangSmith
Apollo.io: AI sales platform for B2B prospecting, lead gen, and deal automation.. LangSmith: AI Agent & LLM Observability Platform. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Apollo.io is freemium and LangSmith is freemium.
The best choice between Apollo.io 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.
Apollo.io offers: Outbound Prospecting, Inbound Lead Qualification, Data Enrichment, Deal Execution. LangSmith offers: Cost tracking, Online LLM-as-judge and code evals, Tool and agent trajectory monitoring, Webhook and Pagerduty alerts.
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.