Fable 5.1 and GPT-6 Astra cost exactly the same per token — $10 in, $50 out. So the price question isn't the rate card. Here is what each model actually costs per task, with the maths.
OpenAI shipped Astra on 3 September 2026 and Greg Brockman said the AGI era has arrived. Here is what the benchmarks support, what they don't, and where the model is genuinely worth the 2.5x price.
The old answer was "commands are for you, skills are for Claude." Since the two merged, that mental model will lead you wrong. Here is what actually decides it.
AI writes your app in minutes but won't make it load fast, and Google ranks you on speed. Here is the exact prompt workflow that took a Next.js build to 100 on Core Web Vitals.