Ocean.io similar-companies API (lookalikes), independently benchmarked
Ocean.io's similar-companies — or "lookalike" — API finds companies that resemble a seed account using AI-driven lookalike search across a global company graph. Here is how it actually scored on the independent Openbenchmarks lookalike benchmark, and the Ocean.io alternatives.
How Ocean.io scored
Same B2B seed companies as every other vendor; an LLM judge scores each returned company for relevance. See the full methodology and matrix →
| Metric | Ocean.io | Standing |
|---|---|---|
| Precision@10 (top-of-list quality) | 69.6% | #5 of 5 |
| Precision@50 | 56.4% | #3 of 5 |
| Precision@100 (long-list quality, headline) | 48.6% | #3 of 5 |
| Relevant companies returned | 1,118 | #3 of 5 |
| Cost per relevant company | — | — |
How Ocean.io finds similar companies
Ocean.io surfaces lookalikes via AI-driven lookalike search across a global company graph. 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. Getting an API key currently requires human-mediated signup. human signup
Ocean.io 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 | |
|---|---|---|---|
| OpenFunnel | embeddings over a company index | 69.8% | Ocean.io vs OpenFunnel → |
| Exa | neural web search with a 'similar to this URL' endpoint | 25.8% | Ocean.io vs Exa → |
| Parallel | an agentic research API; lookalikes via Entity Search | 56.5% | compare → |
| PredictLeads | similar companies via shared tech / news / jobs co-signals | 19.4% | compare → |
Ocean.io scores 48.6% Precision@100 on the current cohort. There is no single overall winner — precision and cost favor different vendors, so pick on the axis that matches your workflow. See all vendors on the full benchmark → · What is a company lookalike API? →