ChatGPT vs Perplexity vs Google vs Bing: AI Search Engine Comparison
In the blog post, Svitlana Tomko compares ChatGPT, Perplexity, Google, and Bing in terms of generating the best answers. This review is conducted by an SEO Research Analyst who specializes in data-driven SEO analysis and industry studies. The comparison aims to determine which AI search engine performs the best. The blog post was published on April 2, 2025, and is a 39-minute read. It delves into the capabilities of these AI search engines for generating accurate and relevant answers.
Introduction
Although AI search engines are becoming more popular, the quality and reliability of their responses vary. In this research, we compare responses generated by ChatGPT with the enabled search feature (ex-SearchGPT), Perplexity, Google AI Overviews (AIOs), and Bing Search AI powered by Copilot. We analyze the similarities and differences in their answers and how each AI search engine selects sources to cite.
Research Details
Keywords: 2,000 keywords from 20 niches (100 per industry)
Analysis Location: United States
Analysis Period: Feb 26, 2025 – March 3, 2025
Key Findings
Perplexity and ChatGPT have the highest overlap of referenced domains, with 25.19% of cited domains in common. Google AIO and ChatGPT also demonstrate high overlap (21.26%). Bing Copilot has the lowest overlap of cited domains.
Bing Copilot often sources domains less than 5 years old (18.85%). Google’s AIO feature cites citations from older domains the most (49.21% are over 15 years old).
ChatGPT produces the longest answers on average (1,686 characters) with a relatively diverse vocabulary. Perplexity generates moderately long responses (1,310 characters on average) but frequently repeats information.
Methodology and Tools Used
We used various tools and libraries for analysis, including the sentence-transformers library, NLTK Stopword List, spaCy library, and Transformers library, among others.
HONESTAI ANALYSIS
AI search engines show different approaches in presenting content and selecting sources. ChatGPT offers long and thoroughly referenced responses, while Bing Copilot uses a minimalist approach. Google AIOs generate medium-length answers with higher complexity. It is essential to align content strategies with each AI search engine’s nuances for better online visibility.
About the Author
Yevheniia is an SEO and Content Marketing Expert at SE Ranking. With expertise in digital marketing and content strategy, she creates impactful SEO-friendly content. Yevheniia follows the latest SEO, content, and marketing trends and incorporates them into her workflow.
References
PlatoData.Network Vertical Generative Ai. Empower Yourself. Access Here.
PlatoAiStream. Web3 Intelligence. Knowledge Amplified. Access Here.
PlatoESG. Carbon, CleanTech, Energy, Environment, Solar, Waste Management. Access Here.
PlatoHealth. Biotech and Clinical Trials Intelligence. Access Here.
Source: SE Ranking