ChatGPT Loses Half Its AI Prompt Share to Rivals in Six Months

The monopoly hold of ChatGPT on artificial intelligence conversations is dissolving. According to a new report from Comscore, the platform's share of total prompt volume dropped from 70 percent to 50 percent between January and June 2026. This significant shift indicates that users are no longer relying on a single tool for their AI interactions.

The decline in ChatGPT's dominance coincides with a surge in the use of competing platforms. Gemini and Claude have rapidly captured market share as overall AI assistant usage grows. For businesses and publishers, this fragmentation means that strategies focused solely on one chatbot are becoming increasingly ineffective.

Rivals capture rapidly growing market share

Gemini’s share of prompts nearly doubled, rising from 17 percent to 30 percent during the first half of the year. Claude also saw substantial growth, climbing from 2 percent to 11 percent. These figures suggest that the AI market is diversifying, with users spreading their queries across multiple services rather than sticking with the first mover.

Comscore notes that this trend is not a sign of shrinking demand, but rather a widening of the overall pie. As more people adopt AI tools, the distribution of usage becomes more evenly split among leading competitors. This creates a complex landscape where no single platform holds absolute control over user attention.

Search engines integrate AI answers directly

The impact of AI is also reshaping traditional search behavior. Google’s AI Overviews, which provide summaries directly in search results, are becoming more prevalent. The proportion of desktop searches triggering these AI summaries grew from 25.8 percent in July 2025 to 39.4 percent in June 2026.

This development poses a challenge for publishers who rely on search engine referral traffic. When search engines answer questions directly, users may not need to click through to external websites. This reduces the opportunities for publishers to drive traffic and monetize their content through traditional advertising models.

Publishers must adapt multi-platform strategies

Experts advise that content strategies must evolve to account for this fragmentation. Rather than optimizing for a single assistant, publishers should measure visibility across all major AI platforms. This approach ensures that content is accessible to audiences regardless of which tool they prefer to use for their queries.

Digiday reports that being used by an AI system is not the same as being cited in its responses. For example, a major travel site accounts for a large portion of sourcing data but a much smaller share of actual citations. This distinction highlights the need for nuanced metrics to track true impact and visibility in the AI-driven information ecosystem.