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TheirStack vs Clay vs LeadMagic

Compare fit for your workflow. Mentions reflect conversation, not a recommendation. Pricing may use different billing units.

Side-by-side GTM tool comparison

Attribute	TheirStack	Clay	LeadMagic
What it does	Company search by tech stack and hiring signals, built on job posting data.	Spreadsheet-style workspace that chains many data providers and AI research steps into enrichment and outbound workflows.	Enrichment platform and API for finding and verifying work emails, mobile numbers and company data, billed only on valid results.
Category	Data & enrichment	Data & enrichment	Data & enrichment
Pricing	From $109 one-time	From $167 per month	From $99 per month
Free tier	Yes	Yes	Yes
API or MCP	Yes	Yes	Yes
SYC mentions (archive)	Not in report	2,259 (#3)	1,756 (#5)
Club trend	Not enough data	Cooling	Cooling
Member upvotes	0	0	0
Members using	0	0	0
Features	Tech stack detection from job postings Job posting data API and MCP access	Waterfall enrichment across many data providers AI research agent for custom data points Table-based workflow builder for GTM plays API, MCP and CLI access for agents	Work email finding and validation Mobile number finding Pay only for valid results API, CSV, terminal and MCP access
Integrations	Not listed	Slack, Snowflake, BigQuery, Claude, Business Social Application	HubSpot, Salesforce, Zapier, Make, Slack, Clay, Smartlead, Instantly