Core Insights - The article discusses the current state and trends of the large model API market in 2025, highlighting significant growth and shifts in market share among key players [1][2][25]. Token Usage Growth - In Q1 2025, the total token usage for AI models increased nearly fourfold compared to the previous quarter, stabilizing at around 2 trillion tokens per week thereafter [7][25]. - The top models by token usage include Gemini-2.0-Flash, Claude-Sonnet-4, and Gemini-2.5-Flash-Preview-0520, with Gemini-2.0-Flash maintaining a strong position due to its low pricing and high performance [2][7]. Market Share Distribution - Google holds a dominant market share of 43.1%, followed by DeepSeek at 19.6% and Anthropic at 18.4% [8][25]. - OpenAI's models show significant volatility in usage, with GPT-4o-mini experiencing notable fluctuations, particularly in May [8][25]. Segment-Specific Insights - In the programming domain, Claude-Sonnet-4 leads with a 44.5% market share, while Gemini-2.5-Pro follows [12]. - For translation tasks, Gemini-2.0-Flash dominates with a 45.7% share, indicating its widespread integration into translation software [17]. - The role-playing model market is fragmented, with small models collectively holding 26.6% of the share, while DeepSeek leads in this area [21]. API Usage Trends - The most utilized APIs on OpenRouter are primarily for code writing, with Cline and RooCode leading the way [25]. - The overall trend indicates a strong preference for tools that facilitate coding and application development [25]. Competitive Landscape - DeepSeek's V3 model has shown strong user retention and is favored over its predecessor, likely due to faster processing times [25]. - Meta's Llama series is declining in popularity, while Mistral AI has captured approximately 3% of the market, primarily among users interested in fine-tuning open-source models [25]. - X-AI's Grok series is still establishing its market position, and the Qwen series holds a modest 1.6% share, indicating room for growth [25].