Glossary
Comparative rater
A comparative rater is software that takes one set of client data and returns indicative rates from multiple carriers at once, so the agency does not re-key the same risk into each carrier's system. Raters are strongest in personal lines auto and home. Commercial lines coverage is thin.
What it solves, and what it does not
For standard personal lines, a rater kills most of the re-keying. Enter the risk once, get a spread of carrier rates back, and start the conversation from there.
But a rate is not a bindable quote. Final pricing often changes once the carrier runs its own reports and underwriting, and many quotes still get bridged into the carrier's portal to answer carrier-specific questions and finish. The rater starts the quote. The portal usually finishes it.
Where raters stop
Commercial lines is the gap. Carriers ask different questions for different classes, so most commercial quoting still happens portal by portal, one carrier at a time. Some raters offer small commercial for a subset of carriers, but the coverage is nowhere near personal lines.
That gap is exactly why commercial remarketing is so labor-heavy: the multi-carrier comparison that takes minutes in personal lines takes hours of portal-hopping in commercial.
In Relay
Relay's AI Quoting, currently a Research Preview, runs configured carrier portal workflows and returns results with source evidence for your team to review. See how →
Common questions
Is the rate from a comparative rater final?
No. It is an indication. The carrier's own underwriting and reports can move the number, which is why agencies bridge into the carrier portal to confirm before presenting a price as firm.
Do comparative raters work for commercial lines?
Only partially. Some raters handle small commercial like BOPs for certain carriers, but most commercial quoting still runs through individual carrier portals or direct to underwriters.
Part of the Relay insurance operations glossary. Updated 2026-07-11. See how we source content.
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