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ChatGPT vs Gemini vs Claude: Which AI Assistants People Search For in the US and UK

Before you decide which AI assistants to optimise for, look at which ones people go looking for. We measured monthly Google searches for nine assistants in the US and the UK.

A bar chart with one dominant bar, beside three small tiles
Research

Key findings

The data

Monthly Google searches for each assistant’s unambiguous brand terms — the ones that can only mean the AI product.

AssistantTerms countedUS / monthUS shareUK / monthUK share
ChatGPTchatgpt + chat gpt86,230,00090.6%38,370,00096.8%
Geminigoogle gemini + gemini ai5,170,0005.4%450,0001.1%
Grokgrok2,070,0002.2%240,0000.6%
Copilotmicrosoft copilot643,0000.7%116,0000.3%
Claudeclaude ai558,0000.6%168,0000.4%
Perplexityperplexity ai190,0000.2%107,0000.3%
Meta AImeta ai166,0000.2%15,0000.0%
DeepSeekdeepseek161,0000.2%151,0000.4%
Mistralmistral ai + le chat11,9000.0%5,8000.0%

The ambiguous names

Bare “gemini”, “claude”, “copilot” and “perplexity” are much larger, but they mix the AI products with a star sign, a first name, GitHub Copilot and an English word. We report them separately rather than add them in. Ahrefs’ own parent-topic grouping is shown so you can judge the mix.

Search termUS / monthAhrefs parent topic (US)UK / monthAhrefs parent topic (UK)
gemini11,370,000gemini989,000gemini
claude2,680,000claude480,000is claude down
copilot2,470,000microsoft copilot990,000copilot
perplexity1,010,000ai254,000perplexity
openai3,170,000openai551,000openai
anthropic550,000anthropic62,000anthropic

Even counting every bare “gemini” search as the AI product, ChatGPT would still be searched about 5× as often in the US.

What this means for AI visibility

Method and limits

Volumes are Ahrefs Keywords Explorer estimates of average monthly Google searches in the US and UK, pulled on October 25, 2026 through our SiteWide connector. We planned 20 countries; our API allowance ran out after two, so this edition covers the US and UK only and we will extend it rather than estimate the rest. “Grok” is counted bare because Ahrefs files it under its own topic, but it may include a small number of unrelated searches. “Le chat” in the UK sits under a typo topic in Ahrefs and is negligible either way. Google searches exclude searches made inside the assistants’ own apps.

Cite this

You are welcome to quote and chart these figures with a link back. Suggested citation: Mentioned, “ChatGPT vs Gemini vs Claude: Which AI Assistants People Search For in the US and UK,” October 25, 2026, https://mentioned.at/learn/ai-assistant-search-demand. Data and text are published under CC BY 4.0.

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