Cursor introduced its new coding model, Composer 2, touting frontier-level coding intelligence. An X user quickly flagged that Composer 2 is essentially a rebranded version of Moonshot AI’s open‑source Kimi 2.5, with additional reinforcement learning. Cursor’s vice president of developer education confirmed that the model started from an open‑source base, noting that only a portion of the compute used for the final model came from the original Kimi code. The company defended the use as compliant with Kimi’s license and described the partnership with Moonshot AI as authorized and collaborative. Read more →