Open-weight models surge to 29% of volume, price per token flattens

What this post added

This post provides a monthly production index for Vercel's AI Gateway, detailing token volume, spend, and price per token trends. It highlights the increasing adoption of open-weight models (29% of volume), the flattening of average token prices, and the performance of specific models and modalities (e.g., DeepSeek, GLM 5.2, Anthropic, OpenAI, Google Nano Banana, xAI's Grok Imagine). It also discusses the strategic balancing of spend across different model types based on use cases.