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Cursor's New Model: Still Tapping Kimi? And Why Is Musk Cheering?

Cursor launches Composer 2.5, based on Kimi K2.5, achieving performance close to Claude Opus 4.7 at one-tenth the cost. Musk, who previously criticized Cursor, now endorses it due to a compute deal with SpaceXAI. The model includes several training improvements like directional feedback and synthetic data scaling.

Source量子位Author: 一水
Cursor's New Model: Still Tapping Kimi? And Why Is Musk Cheering?
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  • Composer 2.5 uses Kimi K2.5 as base, with 85% of compute on post-training and RL
  • Performance is close to Claude Opus 4.7 in benchmarks at 1/10 the cost
  • Musk shifted from critic to supporter after SpaceXAI compute partnership with acquisition option
  • Cursor improved training with directional feedback, scaled synthetic data, and optimized parallelism

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