June 5, 2025 · Viraj Mehta, Aaron Hill, Gabriel Bianconi What happens under the hood at Cursor? We wired TensorZero between Cursor and the LLMs to see every token fly by… and bend those API calls to our own will. TensorZero is an open-source framework that helps engineers optimize LLM applications with downstream feedback signals (e.g. production metrics, human feedback, user behavior), and we figured it would be interesting to see whether we could use TensorZero on the LLM application we ...