FABLE 5 VS OPUS 4.8: OUTCOMES-BASED ASSESSMENTS ARE A MASSIVE WARNING FOR FRONTIER AI LABS

Summary from the TLDR Dev newsletter

Recent assessments show that advanced AI models, specifically Fable 5 and Opus 4.8, fail to meet real-world business outcomes, scoring zero in improving website conversion rates despite appearing capable on artifact metrics. Companies like Eli Lilly have opted for smaller, purpose-built models over frontier AI.