Ramp data: Fable 5, launched in June, has plateaued at ~11% of spending on Anthropic tools, as companies shift to cheaper models; Opus 5 surpassed Fable 5 (George Hammond/Financial Times)

Ramp data indicates that Anthropic's Fable 5, launched in June, has plateaued at approximately 11% of spending on Anthropic tools. This stagnation is attributed to companies shifting towards more affordable models. Furthermore, Opus 5 has reportedly surpassed Fable 5 in usage. The AI lab's Fable 5 has experienced sluggish demand from corporate clients, with Anthropic's US customers increasingly opting for cheaper alternatives.