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Clay vs Mastra

Side-by-side comparison to help you choose the best tool.

Clay

freemium
4.7 / 5.0

Clay is a modern GTM (go-to-market) data enrichment and outreach platform that combines 75+ data providers with an AI research agent called Claygent. It lets sales and growth teams build hyper-personalised outreach at scale by automatically enriching lead lists with company news, job changes, tech stack data, and LinkedIn activity - then using AI to write tailored messages for each prospect.

Best for: GTM engineers and sales teams building highly personalised outbound campaigns with automated AI research
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Mastra

free
4.3 / 5.0

Mastra is an open-source TypeScript AI system for building agents, workflows, and RAG applications. It provides a unified abstraction for LLM calls, tool use, memory, and workflow orchestration with built-in evaluation and observability. Mastra is designed as a production-ready system with a developer experience comparable to Next.js for AI application development.

Best for: TypeScript developers building production AI agents, workflows, and RAG applications who want a modern, opinionated system with excellent DX
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Feature Comparison
Feature Clay Mastra
Pricing freemium free
Category - -
Rating ★★★★½ 4.7 ★★★★☆ 4.3
Best For GTM engineers and sales teams building highly personalised outbound campaigns with automated AI research TypeScript developers building production AI agents, workflows, and RAG applications who want a modern, opinionated system with excellent DX
Views 101 117
Detailed Attribute Comparison
Attribute Clay Mastra
Pricing Type freemium free ✓
Free Trial No No
API Available No No
Mobile App No No
Rating 4.7 ✓ 4.3
Founded - -
Team Size - -
Deployment - -
Popularity (Views) 101 117 ✓
Green highlight indicates the stronger value for that attribute.
Pros & Cons — Clay
Pros
  • Unmatched data enrichment depth
  • Automates hours of manual prospect research
  • Flexible no-code table interface
Cons
  • Steep learning curve for new users
  • Credit-based pricing can add up quickly
Pros & Cons — Mastra
Pros
  • TypeScript-first for frontend and full-stack teams
  • Production-ready with built-in evaluation
  • Developer experience comparable to Next.js
Cons
  • TypeScript only
  • Newer framework with smaller community
Key Features — Clay
  • Claygent AI research agent
  • 75+ data enrichment sources
  • AI-generated personalised outreach
  • Waterfall enrichment logic
  • CRM & sequencer integrations
Key Features — Mastra
  • TypeScript AI agent framework
  • Workflow orchestration
  • RAG with built-in vector search
  • Built-in evaluation
  • Model-agnostic
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