TAM Graph PricingFAQBlogDocsSign in

Comparison

Best B2B Data APIs in 2026

Compared on one question: what does a call cost? Most of these sell throughput in advance as credits, at a published or quoted rate per credit. Claims come from each vendor's own pricing page on 2 September 2026.

  1. 1

    TAM Graph

    One price, $199 a month, covers the REST API at api.tamgraph.com and the MCP server. Usage is metered on records returned and a request that returns nothing is free. 5 requests a second, 500,000 records a day, 20-second query timeout, no credit balance to top up.

  2. 2

    Coresignal

    Company and employee data APIs. The pricing page quotes a per-credit rate and a monthly credit allowance, so throughput is bought up front.

  3. 3

    Crustdata

    Company and people signals. Its pricing page describes a credit-based API with credit-based usage tiers.

  4. 4

    Diffbot

    Knowledge graph and web extraction. Credits are charged per unit of work, and pages extracted, entities queried and NLP requests each cost a different amount.

  5. 5

    Explorium

    Business data for agents, including an MCP server. Sold as credit packages with a published per-credit rate and pay-as-you-go top-ups.

  6. 6

    Clearbit

    Its site states that Clearbit has joined HubSpot; check current availability and terms before comparing it as a standalone API.

  7. 7

    Bombora

    A B2B intent data co-op. Intent signals are a different product from a queryable company and contact index, and there is no public price list (check).

  8. 8

    People Data Labs

    Person and company datasets by API. The pricing page did not render a plan table for us; check the current per-record terms.

TAM Graph

$199 a month, everything included. A trial of 50 requests costs nothing. See pricing or start the trial.