Claude Sonnet 3.7 Tops AI SEO LLM Rankings: Report
▼ Summary
– Claude Sonnet 3.7 is identified as the top AI model for SEO tasks, achieving an 83% accuracy score, surpassing competitors Gemini 2.5 and ChatGPT 4o.
– Human SEO experts still outperform AI models, scoring 89% in the benchmark study, which assessed content optimization, technical SEO, and ecommerce SEO.
– AI models are useful for automating routine SEO tasks but should not replace human expertise, which is crucial for strategic and creative aspects.
– The study used a 50-question test based on industry best practices, with Previsible planning regular updates to track AI progress in SEO.
Claude Sonnet 3.7 has emerged as the leading AI model for SEO tasks, according to a comprehensive new benchmark study. The research, conducted by digital marketing firm Previsible, evaluated multiple large language models against industry standards, revealing significant performance differences between AI tools and human SEO specialists.
The standout performer, Claude Sonnet 3.7, achieved an 83% accuracy score—higher than competitors like Gemini 2.5 (81%) and ChatGPT 4o (79%). However, human SEO experts still outperformed AI, scoring 89% on the same test. The study measured capabilities across three key areas: content optimization (85%), technical SEO (79%), and ecommerce SEO (63%).
Interestingly, the research uncovered several factors that influence AI performance. Assigning a persona—such as instructing the model to act as an SEO expert—boosted accuracy by 2.8%. Conversely, allowing models to conduct web searches or deep research actually reduced effectiveness by 3.2% and 5.7%, respectively.
While AI shows promise in automating routine SEO tasks, experts caution against overreliance. “These models predict rather than know,” explains David Bell of Previsible. “Until reliability reaches 99%+, they’re best used for supporting tasks—like drafting content briefs or spotting internal linking opportunities.”
The benchmark evaluated models using a 50-question test developed by SEO professionals, with answers verified against industry best practices. Previsible plans to update its findings regularly, tracking how AI capabilities evolve in the competitive SEO landscape.
For brands considering AI-powered SEO solutions, the takeaway is clear: technology can assist, but human expertise remains essential for strategy, technical execution, and creative problem-solving. The full report, including detailed rankings and methodology, is available through Previsible’s research platform.
(Source: Search Engine Land)
