You can write a post with a general-purpose assistant. The question is what you'll be missing in month two.
| ChatGPT | Kast | |
|---|---|---|
| Writing a draft | Very good | Very good |
| Memory of your voice | Rebuilt every session | Calibrated once, then kept |
| Score with reasoning | On request, not calibrated | Fixed grid, proof required |
| Knowledge of your audience | None | Benchmark built with you |
| Publishing and calendar | No | Yes |
| After publishing | Nothing | Reach, engagement and people detected under each post |
For a one-off post, a general-purpose assistant is more than enough. To hold a consistent editorial line for a year and know who it gets reacting, you need memory and measurement.
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