Research depth
Discovery
How well the tool supports keyword, competitor, SERP, backlink, or market research before execution.
Byword
Deep keyword, competitor, SERP, gap, cluster, and Search Console research surfaces.
The research page claims keyword intelligence, competitor analysis, SERP insights, content gaps, and cluster analysis. https://byword.ai/features/research/
SEO.AI
Strong competitor/SERP-oriented research for content production, but not documented as broad market research.
The SEO writing page says competitor analysis and a score based on 5.7 million data points; the audit page says it analyzes top-ranking articles, NLP, missing keywords, titles, descriptions, and word count. https://seo.ai/features/seo-writing https://seo.ai/features/seo-audits