# ChatGPT's market share slips below 50% for first time

> **Platform:** [SPIDITS AI](https://spidits.com/) — Real-Time AI News & Market Intelligence  
> **Published:** 2026-06-16T10:30:00.000Z  
> **Category:** PRODUCT_LAUNCH  
> **Impact Score:** 300/100  
> **Primary Source:** [arXiv AI](https://arxiv.org/abs/2606.17443)  
> **Canonical Citation:** [https://spidits.com/timeline/chatgpts-market-share-slips-below-50-for-first-time](https://spidits.com/timeline/chatgpts-market-share-slips-below-50-for-first-time)

## Executive Summary
The chatbot still remains the most popular AI assistant worldwide with over 1.1 billion monthly users, followed by Gemini with 662 million and Claude with 245...

## Why It Matters (Strategic Analysis)
ChatGPT's market share has slipped below 50% for the first time, despite maintaining over 1.1 billion monthly users. Gemini and Claude follow with 662 million and 245 million users, respectively. This shift indicates a changing AI assistant market ecosystem.

## Key Entities & Companies
- **OpenAI**
- **Anthropic**
- **Google DeepMind**

## Referenced Coverage & Sources
- **[VentureBeat](https://venturebeat.com/technology/z-ais-open-weights-glm-5-2-beats-gpt-5-5-on-multiple-long-horizon-coding-benchmarks-for-1-6th-the-cost)**: Z.ai's open-weights GLM-5.2 beats GPT-5.5 on multiple long-horizon coding benchmarks for 1/6th the cost — _Today, Chinese AI startup Z.ai (formerly Zhipu AI) announced the immediate release of GLM-5.2 , a 753-billion parameter open-weights large language model..._
- **[Ars Technica](https://arstechnica.com/ai/2026/06/anthropic-pauses-token-based-billing-for-its-claude-agent-sdk)**: Anthropic "pauses" token-based billing for its Claude Agent SDK — _Move originally planned for Monday would have heavily increased power users' costs._
- **[arXiv AI](https://arxiv.org/abs/2606.17443)**: Incumbent Advantage: Brand Bias and Cognitive Manipulation Dynamics in LLM Recommendation Systems — _Large language models (LLMs) are becoming a major way for consumers to find products, but we do not yet understand how brands compete in this new channel. We..._
- **[arXiv AI](https://arxiv.org/abs/2606.17454)**: Dissecting model behavior through agent trajectories — _AI agent performance is not just a modeling problem, it is fundamentally a systems problem. The advanced capabilities of models are realized through agent..._

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*Synthesized by SPIDITS AI Market Intelligence Desk. Track live AI news, model releases, and funding: [https://spidits.com](https://spidits.com)*