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There's nothing to catch on to. OpenAI have been shouting "come to us!! We are 10x cheaper than Anthropic, you can use any harness" and people don't come in droves. Because the product is noticeably worse.
As of Oct 2025, it appears that openai markets share is 15x that of anthropic: 60% vs 3.5% [1].
As of April 2026, openai has 900 million weekly users [2] while anthropic has 300 million monthly users [1].
As of March 2026, openai app downloads were 2.2 million per day, while anthropic app downloads were 340,000. openai mobile users were 248 million per day, while anthropic mobile users were 9.4 million. In Feb 2026, chatgpt had 5.4 billion web visits, while claude had 290 million web visits. [3]
It seems to me that openai operates at a much higher scale than anthropic. Since you used droves as a proxy for product quality, by that standard anthropic has a much more inferior product. :)
[1] https://sqmagazine.co.uk/claude-vs-chatgpt-statistics/ [2] https://www.pbs.org/newshour/nation/openai-focuses-on-busine... [3] https://www.forbes.com/sites/conormurray/2026/03/06/claude-s...