How complete, fast and expensive are SEO data APIs on real workloads?
Measured comparisons of SEO API output on fixed query cohorts. One declared cohort, every route on the same day, every raw response published as data you can download and re-run.
50
Queries in cohort
20
Domains
8
Routes measured
314
API calls · 284 valid
$1.99
Run cost, list price
1
Run · 2026-09-15
Catalogue
| Record | Type | Cohort | Run | Calls | Files |
|---|---|---|---|---|---|
| Backlink counts across providers: same ranking, different numbersTwenty vendor domains queried on Serpstat, SE Ranking and Moz on the same day. How far the referring-domain counts diverge, whether the providers at least agree on order, and why authority scores cannot be compared across tools. | Benchmark | v1 | 2026-09-15 | 314 | csv · raw |
| Keyword volume coverage: which APIs report the long tail at allFifty US-English buyer keywords sent to DataForSEO, Serpstat, SE Ranking and Google Ads Keyword Planner in one call each. How many came back with a number, how the numbers compare with Google's own, and how each provider signals 'no data'. | Benchmark | v1 | 2026-09-15 | 314 | csv · raw |
| SEO API latency, failures and what a real workload costsLatency, failure and no-data rates, and observed cost for 314 calls across twelve SEO data routes on one day, with a worked monthly workload for an in-house growth agent. | Benchmark | v1 | 2026-09-15 | 314 | csv · raw |
| Google SERP completeness: live fetch versus stored indexFifty queries fetched through five Google results routes on the same day and compared with a live rendered Google page: how much of the real top 10 each route returns, whether the first result matches, what it costs and how long it takes. | Benchmark | v1 | 2026-09-15 | 314 | csv · raw |
| SEO API evaluation cohort v1: reproduce the benchmarkThe declared cohort of 50 queries and 20 domains, the routes it was sent through, the exact commands, and the per-call record format, so anyone can repeat the run and diff it against ours. | Dataset | v1 | 2026-09-15 | 314 | csv · raw |
Latest run
2026-09-15 · cohort v1 · 314 calls, 284 valid, $1.99.
Routes: dataforseo, google-ads, seranking, serpstat, cloro, serpapi, treg-routed, moz.
Not measured: Ahrefs (plan), Majestic, Semrush (no credential).
How to cite
Lou, S. SEO Data Bench: SEO API evaluation cohort v1, run 2026-09-15. https://seodatabench.com/
Provenance
Published by the team behind Treg. Records that include a Treg route say so at the top. Every number links to a dated raw response. Methodology · Relationship