Token Usage with OpenAI Streams and Next.jsTokenization and metering with OpenAI streaming API and Vercel AI

The text discusses how OpenAI's streaming API enables modern, responsive applications by returning responses as soon as they are available. However, this data-only stream API doesn't return token usage metadata, which is essential for tracking customer consumption for billing and analytics purposes. To address this issue, the article guides users through implementing tokenization and usage tracking in their applications using OpenAI's tiktoken package or its unofficial ports like js-tiktoken and WASM bindings. The text also highlights how Vercel's AI Package simplifies the development of AI-empowered streaming user interfaces, integrating effortlessly with OpenAI and other providers.