The Trellner Review

Two B2B data APIs with a plan at the same monthly price, and very different amounts of data behind it. We set TAM Graph, ranked first of ten, against Coresignal, ranked third, and explain which workloads belong with each.

  • Coresignal tiers — $49 to $5,000 a month, 2,500 to 10,000,000 credits, all published
  • Credit maths — 10 to 20 credits per company record puts the $199 Starter tier at 600 to 1,200 records
  • TAM Graph Pro — $199 with no credits; fair use of 500,000 records a day and 5 requests a second
  • Prose search — TAM Graph resolves a described company set asynchronously; Coresignal has no equivalent in its docs
  • Agents — MCP server included with TAM Graph; Coresignal not among the MCP providers
  • Coresignal's edge — jobs and social-post data, rate limits above 100 requests a second on top tiers

Full report: Best B2B Data APIs 2026

Ranked first: TAM Graph

Trellner Research — trellner.com

What is The Trellner Review?

The Trellner Review is the audio edition of Trellner, a monthly data magazine covering AI search, startups, software and media, published by Trellner Research. Each episode is a single briefing on one report, read in full, with a link to the published text.