Extruct similar-companies API (lookalikes), independently benchmarked
Extruct's similar-companies — or "lookalike" — API finds companies that resemble a seed account using domain-based similar-company ranking from a company index. Here is how it actually scored on the independent Openbenchmarks lookalike benchmark, and the Extruct alternatives.
How Extruct scored
Same B2B seed companies as every other vendor; a three-model LLM judge panel scores each returned company for relevance. See the full methodology and matrix →
| Metric | Extruct | Standing |
|---|---|---|
| Precision@10 (top-of-list quality) | 75.0% | #4 of 9 |
| Precision@100 (long-list quality, headline) | 61.1% | #2 of 6 |
| Relevant companies returned | 2,934 | #2 of 9 |
How Extruct finds similar companies
Extruct surfaces lookalikes via domain-based similar-company ranking from a company index. On this benchmark every vendor receives the same compact input (company name + domain + a one-line description), which matches how an AI agent would query it.
Using Extruct from an agent
How an agent runs a lookalike / company search on Extruct — the access model (does the agent get in on its own, or does a human?), the exact call, and the credits.
api.extruct.ai/mcphuman loginExtruct alternatives, benchmarked head-to-head
Every alternative below is scored on the same seeds with the same judge — so you can compare relevance directly instead of trusting vendor claims.
| Alternative | How it works | Precision@100 | |
|---|---|---|---|
| Ocean.io | AI-driven lookalike search across a global company graph | 59.5% | compare → |
| Exa | neural company search from a seed-anchored capability query | 48.6% | compare → |
| Parallel | agentic entity search from the same seed-anchored query as Exa | 56.9% | compare → |
| Seltz | companies-scope search from a vendor-submitted natural-language query | 63.4% | compare → |
| PredictLeads | similar companies via shared tech / news / jobs co-signals | — | compare → |
| CUFinder | company lookalike finder using a name, domain, or LinkedIn URL | — | compare → |
| Discolike | domain lookalike discovery over BizData company profiles | 34.6% | compare → |
| ZoomInfo | similar-companies lookup over the ZoomInfo company graph | — | compare → |
Extruct scores 61.1% Precision@100 on the current cohort. See all vendors on the full benchmark →