MarketMuse

MarketMuse approaches content optimization from strategy downward: instead of only grading one page against one SERP, it inventories your whole site, models your topical authority, and tells you which clusters to build, which pages to refresh, and where personalized difficulty means you can realistically win. Its research applications generate topic models, competitive content analysis, SERP X-rays, and detailed briefs that writers execute against; the optimize view then scores drafts on topic coverage. The 'personalized difficulty' metric — how hard a keyword is for your site specifically, given existing authority — is its signature idea and changes prioritization meaningfully versus generic difficulty scores. A limited free plan exists for tasting; real usage sits in paid tiers. MarketMuse fits strategists planning quarters of content, not writers polishing single posts.