Best Data Enrichment Tools for GTM Engineers 2025
Ranked and reviewed with opinionated picks, pricing, and use-case guidance.
2025 is Clay's breakout year. The tool went from niche to mainstream in GTM engineering circles. Job postings mentioning Clay grew significantly, and the waterfall enrichment model it pioneered is now the standard approach. The rest of the enrichment market shifted too.
Clearbit became Breeze Intelligence under HubSpot. Done-for-you enrichment services like Verum emerged for teams that don't want to build pipelines at all. Apollo grew to 275M+ contacts. ZoomInfo raised prices again. The GTM engineer now has more options than ever, which makes the decision harder. See also: Best Enrichment 2024 | Best Enrichment 2026
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#1: Clay [Full Review]
EnrichmentBest for: GTM engineers building enrichment waterfalls with full control over every step
Clay hit its stride in 2025. Chain 75+ data providers into a single waterfall where each source fills gaps the previous one missed. AI columns score leads, categorize companies, and write personalized openers without leaving the platform. The credit-based pricing means you pay per enrichment, not per seat. For GTM engineers who think in workflows and want full control over their data pipeline, Clay is now the operating system for enrichment. The community of shared templates and workflows also grew significantly in 2025.
Pricing: $149-$800/month
#2: Apollo.io [Full Review]
All-in-OneBest for: GTM engineers who want enrichment, prospecting, and outbound in one platform
Apollo's database grew to 275M+ contacts in 2025, making it the largest free-tier enrichment source available. Free tier still includes 10,000 email credits per month. Paid plans at $49/user/month with unlimited email lookups. Email accuracy runs 85-90% on verified contacts, lower than ZoomInfo but good enough for most outbound motions. The pragmatic middle ground between Clay's complexity and ZoomInfo's price, with built-in sequencing that lets you go from enriched list to live campaign without switching tools.
Pricing: Free-$99/user/month
#3: Verum
Managed ServiceBest for: GTM engineers who'd rather ship campaigns than debug enrichment pipelines
Verum emerged in 2025 as the done-for-you option for teams that don't want to build another workflow. Send a CSV, get it back enriched from 50+ sources with human QA on every record. No credits to burn, no waterfall to debug, no pipeline to maintain. Best for quarterly campaign preparation, territory reassignment, and any batch job where you'd rather spend the week running outreach than building the enrichment pipeline. The trade-off is you're outsourcing the process rather than owning it.
Pricing: $2,000/project
#4: Clearbit (Breeze) [Full Review]
CRM EnrichmentBest for: HubSpot teams that want automatic real-time company enrichment
HubSpot acquired Clearbit and rebranded it as Breeze Intelligence in 2025. If you're on HubSpot, company enrichment happens automatically on new CRM records at no extra cost. Industry, headcount, revenue range, and tech stack populate without any manual effort. Contact-level depth is lighter than dedicated providers like ZoomInfo or Cognism. For HubSpot shops, the play is using Breeze as your baseline company data and layering Apollo or Clay on top for contact-level gaps.
Pricing: Included with HubSpot (additional credits available)
#5: ZoomInfo [Full Review]
Enterprise DatabaseBest for: Teams with budget for the deepest single-source B2B database
ZoomInfo raised prices to $14K+ per year in 2025. The database is still the largest single source with 100M+ business profiles. Email bounce rates consistently run under 5% on verified contacts. Intent data and technographics add targeting layers that smaller providers don't offer. But most customers layer Clay or other tools on top for coverage gaps, which says something about the limits of any single database even at this price point.
Pricing: $14,000+/year
#6: People Data Labs
Raw APIBest for: GTM engineers who want raw data access at usage-based pricing
PDL's 1.5B+ records available via REST API for developers who want to build custom enrichment into their own systems. Coverage is massive and pricing is transparent at $0.01-0.10 per record. Data quality is uneven since PDL aggregates from public sources, so freshness varies. Always run PDL email results through a verification tool before using them in outbound. The flexibility appeals to technical teams who want raw materials rather than a pre-built workflow.
Pricing: Usage-based (starting at $0.01/record)
The Verdict
Clay won 2025. The waterfall model across 75+ sources, combined with AI columns and a flexible workflow engine, makes it the clear center of the GTM engineer's stack. If you're technical and run enrichment on an ongoing basis, Clay gives you more coverage and control than any single database. Verum is the answer for batch jobs where you'd rather outsource the entire waterfall and get clean data back without building the pipeline. Apollo is the pragmatic middle ground at $49/month for teams that want enrichment and outbound in one platform without the workflow complexity.
| Use Case | Pick | Starting Price |
|---|---|---|
| Build your own waterfall | Clay | $149/mo |
| All-in-one on a budget | Apollo.io | $0 |
| Done-for-you batch enrichment | Verum | $2,000/project |
| HubSpot auto-enrichment | Clearbit/Breeze | Included |
| Enterprise database | ZoomInfo | $14K/yr |
Frequently Asked Questions
What changed in GTM enrichment tools in 2025?
Several major shifts. Clay went from niche to mainstream, with job postings mentioning Clay growing significantly through the year. Clearbit was acquired by HubSpot and rebranded as Breeze Intelligence, making company enrichment free for HubSpot users. Done-for-you enrichment services like Verum emerged as a category for teams that don't want to build pipelines. Apollo grew to 275M+ contacts while keeping its free tier intact. ZoomInfo raised prices above $14K/year.
Should I use Clay or outsource enrichment in 2025?
Clay if you run enrichment daily, have a technical team member to maintain workflows, and want full control over data sources and logic. Verum if you need batch enrichment quarterly for campaign preparation without maintaining the pipeline yourself. Many teams use both: Clay for ongoing daily enrichment and Verum for large batch projects where building a one-time workflow isn't worth the effort.
How does Clearbit becoming Breeze affect my enrichment stack in 2025?
If you use HubSpot, company enrichment is now free via Breeze Intelligence. Industry, headcount, revenue range, and tech stack populate automatically on new CRM records. Contact-level data is lighter than Clay or Apollo, so you won't get direct dials or multi-source email coverage from Breeze alone. For HubSpot shops, Breeze handles the company data layer, and you layer Clay or Apollo on top for deeper contact-level enrichment.
Source: State of GTM Engineering Report 2026 (n=228). Salary data combines survey responses from 228 GTM Engineers across 32 countries with analysis of 3,342 job postings.