ChatGPT’s AI prompt share drops from 70% to 50%, Gemini & Claude gain share

ChatGPT's share of AI prompt volume fell from 70% to 50% between January and June 2026, as users increasingly turned to other AI assistants, Comscore data showed. Google Gemini's share rose from 17% to 30%, while Anthropic's Claude increased from 2% to 11%. The shift reflects growing AI use, with users spreading prompts across multiple platforms.