ChatGPT bleeds market share as Claude posts explosive monthly growth

2026-04-17 · Source: The Decoder · Field: Technology & Digital — Artificial Intelligence & Machine Learning · Depth: Fundamental Awareness, quick

Summary

Claude nearly tripled its traffic share last month, increasing from 2.2% to 6.02%, surpassing Deepseek and Grok, according to Similarweb data from April 17, 2026. While still a smaller player, this growth contrasts with ChatGPT's declining market share, which fell sharply from 77.43% a year ago to 56.72%. Google Gemini emerged as the biggest gainer, escalating from 6% to 25.46%, likely driven by Google's strategic Android integration and search query routing. Other platforms like Deepseek, Grok, Copilot, and Perplexity hold smaller shares, with Copilot's 1.99% now including Microsoft 365 Chat traffic.

Key takeaway

For product managers evaluating generative AI platform investments, the rapid market share shifts indicate a dynamic and competitive landscape. You should prioritize platforms demonstrating strong growth, like Google Gemini and Claude, and consider the impact of ecosystem integration on user acquisition. This data suggests that relying solely on established leaders like ChatGPT may overlook significant emerging opportunities and risks.

Key insights

Generative AI chatbot market shares are shifting, with Claude and Gemini gaining significantly while ChatGPT's dominance erodes.

Principles

• Aggressive platform integration drives user adoption.
• Market share can shift rapidly in emerging tech sectors.

In practice

• Monitor competitor traffic share for market trends.
• Integrate AI features into existing popular platforms.

Topics

• Generative AI Market Share
• Claude AI
• ChatGPT
• Google Gemini
• Similarweb Data

Best for: Product Manager, Investor, Entrepreneur, AI Product Manager, Director of AI/ML, Tech Journalist

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Editorial summary, takeaway, and curation by AIssential. Original article published by The Decoder.