Benchmarking B2B Enrichment Providers

When you have a list of event attendees with minimal information, just a job title and company name, how do you turn that into something actionable? This is the reverse enrichment problem. You start with sparse data and work backward to find the actual person, their email, their LinkedIn, and their company details.

We wanted to know which enrichment provider does this best.

What We Tested

We took 184 real leads from tech conference attendance lists. Each row had a job title like "Senior Software Engineer" or "VP of Marketing," a company name, a location, and some event context like "DeveloperWeek 2025."

The task: find the actual person behind this sparse data. Enrich it with their name, a verified email, their LinkedIn URL, company revenue, and research notes explaining how the information was found.

We ran the same 184 leads through three providers: Sixtyfour, Parallel, and Clay.

The Methodology

Rather than manually reviewing hundreds of results, we used Gemini 3 Pro as an impartial judge.

For each of the 184 rows, we fed the LLM the original lead data as context, then showed it all three enrichment results side by side. We anonymized the provider names as "Provider A," "Provider B," and "Provider C" to eliminate any brand bias. The LLM scored each on a 0-10 scale across six dimensions: identity accuracy, person completeness, company completeness, research quality, research relevance, and research depth.

After scoring, it ranked the three providers for each category. We tallied everything up across the full dataset.

Results

The overall picture is clear. Sixtyfour achieved a 93% score, significantly ahead of Parallel at 72% and Clay at 66%.

Breaking it down by category, Sixtyfour led in every metric. The biggest gap was person completeness, where Sixtyfour scored 97% compared to around 47% for the others. This comes down to email discovery. Sixtyfour consistently found verified professional emails while competitors often returned nothing or guessed incorrectly.

The stacked breakdown shows how each component contributes to the overall score. Sixtyfour's advantage is consistent across all dimensions, not just one outlier metric pulling up the average.

What We Learned

Email discovery is the differentiator. In B2B enrichment, finding a verified email is often the whole point. Sixtyfour found actionable emails in the vast majority of cases.

Identity accuracy matters too. When given only "VP of Marketing at Acme Corp," some providers returned the wrong person entirely. Sixtyfour correctly identified the right individual 94% of the time.

Research depth varied wildly. Sixtyfour provided specific details like patents filed and conference talks given. Other providers often returned generic LinkedIn summaries.

Caveats

This wasn't a comprehensive industry benchmark. It was a focused evaluation on reverse enrichment from event data. The 184 test cases came from tech conference attendees, which may not represent all scenarios. Different industries might yield different results.

That said, for the "find the person behind this job title" problem, the results were decisive.