Open-Weight AI Models Surge to 29% of Token Volume as DeepSeek Closes in on Google, But Represent Less Than 4% of Spend

Open-weight AI models surge to 29% of token volume with DeepSeek commanding 22.6% and closing in on Google, yet all open-weight models combined account for under 4% of total spend, as Anthropic, OpenAI, and xAI each dominate separate AI modalities, forcing production apps to route across multiple labs.

• Open-weight models now account for 29% of AI Gateway token volume, nearly tripling since April, with DeepSeek alone commanding 22.6% of tokens and closing in on Google's second-place position, yet all open-weight models combined represent under 4% of total spend.
• The price per token holds flat in June after a nearly 20% spike in May, as surging cheap open-weight volume and rising frontier model prices offset each other, while AI Gateway token volume and spend grow 29% and 27% respectively month over month.
• Each AI modality is dominated by a different lab — Anthropic leads text spend at 61%, OpenAI's GPT Image leads image generation at 53%, and xAI's Grok Imagine leads video volume at 42% — meaning production apps now require routing across at least three labs to access the top-performing model in every category.