Recent statistics from the AI model aggregation platform OpenRouter reveal an intriguing shift in the programming market landscape. Over the past weeks, both Anthropic and Google have witnessed a decline in their respective market shares. This transformation is not attributed to the launch of GPT-5, whose market presence remains modest at less than 5%. Instead, the surge is credited to the swift ascendancy of open-source models, notably Qwen3 Coder. Specifically, Qwen3 Coder has soared to capture 20.5% of the market, marking a remarkable 15.4% increase since the fourth week of July.
