Kimi K3.1 Pro Saves 55% vs Opus 5.5 Despite Higher API Counts

The release of the Kimi K3.1 Pro by Moonshot has sparked considerable discussion about its potential to replace the well-established Opus 5.5. Prompt Engineering examines this question by comparing the two models across 13 long-horizon tasks, revealing distinct strengths and trade-offs. For instance, Kimi demonstrates clear advantages in creative and visually-oriented tasks, using advanced reinforcement […]
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