8 AI models write the same YouTube script at their real generation speed, sped up 60x. From our inte

8 AI models write the same YouTube script at their real generation speed, sped up 60x. From our internal writing benchmark. GPT-4o finished first and scored last. Claude Opus 5.5 thought through 116k tokens for 16 minutes and just edged out the best score. DeepSeek V4.1 Flash was 23x faster than Opus 5.5 for a 1.7% lower score.