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| ChatGPT | Claude | |
|---|---|---|
| Azienda | OpenAI | Anthropic |
| Ideale per | All-round assistant with strong persistent personalization (Custom Instructions + Memory + Projects). | Long documents, careful reasoning and writing; Projects carry persistent instructions. |
| Modelli | GPT model family (multiple tiers) | Claude model family (multiple tiers) |
| Piano gratuito | Yes, capable free tier | Yes |
| Piani a pagamento | Paid subscriptions add stronger models and higher limits | Paid subscriptions add stronger models and higher limits |
| API | Yes (OpenAI API, separate from the consumer app) | Yes (Anthropic API) |
| Istruzioni personalizzate | Yes, Custom Instructions (persistent), plus per-Project instructions | Yes. Project instructions, personal preferences, and custom Styles |
| Memoria | Yes, optional cross-chat memory | Yes, memory features on recent versions |
| Caricamento file | Yes | Yes |
| Ricerca web | Yes | Yes |
| Finestra di contesto | Model-dependent; large on current tiers | Very large, a signature strength |
| App | Web · iOS · Android · Windows · macOS | Web · iOS · Android · desktop · Claude Code (terminal) |
| Corrispondenza del profilo | excellent · guida | excellent · guida |
Verificato 2026-08-10 / 2026-08-10 · verifica i dettagli sui siti ufficiali. Cambiano spesso.
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