Pathfinder SEO keyword research tool includes a metric on keyword competition.
Competition is on a scale of 0 — 1 with 0 being low competition and 1 high competition.
There is no “perfect” competitive metric to target. Competition is just one of the factors to consider when selecting your primary and secondary keywords for a webpage.
Like all keyword metrics, we think of competition on relative terms. If two keywords have similar search volumes and would both drive traffic to your website that is well within your audience, then you’d likely select the lower competition keyword as a primary or focus phrase.