ChatGPT's Efficiency Gains

ChatGPT-5.5’s high point is its efficiency, says Harvey’s Niko Grupen. “A model like GPT-5.5 is a higher quality model than GPT-5.4, but in some experiments has shown 50% reduction in reasoning tokens, much greater efficiency.” He says the new AI lens is more focused on “what is the quality per dollar spent or the quality per token used.”