Search volume accuracy: I checked tools against real GSC impressions

Search volume accuracy: I checked tools against real GSC impressions
The test nobody runs. I took 30 keywords I actually rank for, pulled true impressions from Search Console, and compared each tool's volume estimate.

What I found:
➕ Ahrefs ran closest on mid-volume terms, usually within ~25% of real impressions
➕ Semrush trended high — often 1.3-1.6x reality on commercial terms
➖ Every tool was wildest on low-volume long-tail (under 100/mo): estimates were basically guesses, off by 3-5x either way
➖ 'Clickstream-corrected' volumes are model outputs, not counts

The honest read: tool volume is a relative ranking signal (term A bigger than term B), not an absolute traffic forecast. Stop building revenue models on it.

Best for: directional sizing, never precise forecasting.

Pick this if you use volume to compare terms within one tool — that's valid. Skip the habit of quoting tool volume as expected traffic to a client; GSC impressions are the only ground truth.

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