The essentials in 30 seconds
ChatGPT's memory works in two layersstored memories (specific data you ask it to remember) Chat history (automatically reviews previous conversations). It can store between 1,500 and 1,750 words in saved memories. The users Plus ($20/month) and Pro ($200/month) have full long-term memory, while the free plan offers basic continuity between recent conversations. You can Control, edit and delete All from Settings > Personalisation > Memory.
How does ChatGPT's memory work in 2026?
ChatGPT's memory has evolved a lot since its initial launch. Today it works with two complementary systems which combine to offer you a more personalised experience in every conversation.
Saved memories
Specific data that you ask me to remember: your name, profession, preferences, writing style. They are stored permanently until you delete them.
Conversation history
From April 2025, ChatGPT will automatically review your previous chats to find relevant context, without you needing to say “remember this”.
Automatic management
For Plus and Pro users, ChatGPT now automatically prioritises the most relevant and recent memories, avoiding the dreaded “memory full” message.
Total user control
You can activate, deactivate, edit, or delete memories whenever you like. You can also use Temporary Chat to converse without leaving a trace in your memory.
Memory according to your ChatGPT plan
Not all ChatGPT plans offer the same memory capacity. Here is a clear comparison of what each one includes:
| Plan | Price | Type of memory | Context window |
|---|---|---|---|
| Free | $0 | Basic continuity between recent conversations | ~16K tokens |
| Go | $8/month | Saved memories + partial history | 256K tokens |
| Plus ⭐ | $20/month | Full memory + automatic management + full history | 256K tokens |
| Pro | $200 per month | Full memory + automatic management + full history | 400K tokens |
Recommendation For most users, the Plus plan ($20/month) It's the sweet spot. It offers full memory, automatic memory management, and a 256K token context window — enough for extensive conversations without losing the thread.
How to teach ChatGPT things (step-by-step)
Training ChatGPT's memory is easier than you think. These are the most effective ways to do it:
- Explicitly tell them what to remember — Write sentences like “Remember that I am a graphic designer and I work with Figma” o “Remember that I prefer short, direct answers.”. ChatGPT will keep this information as permanent memory.
- Set up your custom instructions — Go Settings > Personalisation > Custom instructions Here's what I'd like ChatGPT to always keep in mind: my preferred language, my technical level, and the tone I expect.
- Chat naturally Thanks to conversation history, ChatGPT learns from your previous chats. If you always ask it for vegetarian recipes, it will eventually take this into account without you having to say anything.
- Check what you remember — Ask “What do you remember about me?” at any time to view the list of saved memories and confirm that everything is correct.
- Correct and refine — If something is wrong, tell him “Forget I mentioned X” o “Update my preference: I now use React instead of Vue”. ChatGPT will update the memory instantly.
5 tips to boost ChatGPT's memory
These tips will help you make the most of the memory system and get increasingly personalised responses:
- Be specific with the key data. I program in Python and JavaScript, at an intermediate level, with a focus on automation.
- Group context into a single conversation. Dedicate an initial chat to telling me all about yourself: profession, tools you use, communication style, and current objectives.
- Use Chat Temporal for isolated tasks. If you are going to do something unrelated to your profile (a one-off search, helping a friend), use Temporary Chat so as not to contaminate your history.
- Review your memories periodically. Go to Settings > Personalisation > Memory > Manage and delete outdated data. Memory has a limit of ~1,600 words, so only keep what's relevant.
- Combine memory with good prompts. Memory provides general context, but a good prompt in each conversation defines the specific task. Together, they are unbeatable.
Memory limitations and considerations
Although ChatGPT's memory is powerful, it has limitations that are worth knowing to avoid frustration:
Storage limit
Saved memories can store between 1,500 and 1,750 words. When full, it will not add new memories until you delete some (unless you have automatic management).
It doesn't remember everything automatically.
Chat history helps, but it's not perfect. For critical data (your company name, tech stack), it's better to use explicit memories.
Privacy and Security
The memories are stored on the servers of OpenAI. Do not store passwords, bank details or sensitive information in ChatGPT's memory.
Important: If you share your ChatGPT account with someone, that person will be able to see and edit your saved memories. Keep your account personal and do not share sensitive data.
Cómo borrar o gestionar las memorias de ChatGPTLas memorias de ChatGPT son una forma de que el modelo recuerde información de conversaciones pasadas. Esto puede ser útil para mantener la coherencia en conversaciones largas o para que ChatGPT aprenda sobre tus preferencias. Sin embargo, puede que quieras gestionarlas o eliminarlas por razones de privacidad o si ya no las necesitas.Aquí te explicamos cómo puedes borrar o gestionar las memorias de ChatGPT:**1. Gestionar el historial de conversaciones desde la configuración de tu cuenta:**La forma más directa de gestionar tus interacciones con ChatGPT es a través del historial de conversaciones.* **Accede a tu historial:** En la interfaz de ChatGPT (tanto en la web como en la app móvil), normalmente verás una barra lateral o una sección de "Historial" o "Chats". Aquí se guardan todas tus conversaciones anteriores. * **Eliminar conversaciones individuales:** Puedes pasar el ratón por encima de una conversación específica en tu historial y, habitualmente, aparecerá un icono de "borrar" (suele ser una papelera). Haz clic en él y confirma si se te solicita. * **Borrar todo el historial:** Algunas plataformas ofrecen una opción para borrar todo el historial de conversaciones a la vez. Busca esta opción en la configuración de tu cuenta o en la sección del historial. * **Desactivar el historial (Feature Control):** OpenAI ha introducido la opción de "Chat History & Training". Puedes acceder a ella desde la configuración de tu cuenta. Desde aquí, puedes: * **Desactivar el historial:** Si desactivas esta opción, las nuevas conversaciones que tengas no se guardarán en tu historial y no se utilizarán para entrenar los modelos de OpenAI. Las conversaciones anteriores que ya estén guardadas permanecerán hasta que las borres manualmente. * **Borrar conversaciones específicas:** Incluso con el historial activado, puedes borrar conversaciones individuales desde la interfaz del historial.**Cómo acceder a la configuración de "Chat History & Training":**1. Ve a [chat.openai.com](https://chat.openai.com/). 2. Haz clic en tu nombre o icono de perfil en la esquina inferior izquierda. 3. Selecciona "Settings" (Configuración). 4. En el menú de configuración, busca y haz clic en "Data Control" (Control de datos) o "Chat History & Training". 5. Aquí encontrarás las opciones para desactivar o habilitar el historial de chat.**2. Consideraciones sobre la "memoria" a largo plazo:**Es importante entender que ChatGPT, por defecto, no tiene una "memoria" permanente en el sentido humano. Cada conversación es típicamente un contexto independiente, a menos que se esté utilizando deliberadamente el historial de conversaciones.* **Memoria dentro de una conversación:** ChatGPT sí que mantiene el contexto *dentro de una única sesión de chat*. Recuerda lo que se ha dicho previamente en esa conversación específica para poder responder de manera coherente. Esta "memoria" se reinicia cuando inicias una nueva conversación. * **Memoria a través del historial:** La funcionalidad de "historial de conversaciones" es lo que permite a OpenAI (y a ti, al verlo) "recordar" sesiones pasadas. Al desactivar el historial de chat, evitas que las nuevas conversaciones se añadan a este registro y se utilicen para futuros entrenamientos (si tienes habilitado el entrenamiento con datos de usuario). * **Especificar en el prompt (memoria temporal):** Puedes "enseñar" a ChatGPT algo temporalmente dentro de una conversación dándoselo como instrucción al principio: "Por favor, recuerda que soy un diseñador gráfico. A partir de ahora, házmelo saber si mis preguntas sugieren que no soy un profesional. Al final de cada respuesta, haz un resumen de los puntos clave." Esta instrucción se aplicará solo durante esa conversación.**Resumen de acciones:*** **Para borrar mensajes o conversaciones recientes:** Navega a tu historial de chat y usa la opción de borrar. * **Para evitar que las nuevas conversaciones se guarden y se usen para entrenar:** Desactiva la opción "Chat History \& Training" en la configuración de tu cuenta. * **Para eliminar todo lo que pueda haber sido usado para entrenar:** Si has tenido el historial activado, no hay una opción para "borrar el modelo" o eliminar específicamente lo que se ha aprendido de tus datos. Sin embargo, desactivar el historial para el futuro y borrar tus conversaciones existentes es el paso más cercano. OpenAI afirma que los datos solo se usan para la mejora del modelo y que, si se desactiva, los datos no se guardan ni se siguen usando.Al gestionar tu historial de chat y la configuración de "Chat History & Training", puedes controlar qué información se almacena y cómo se utiliza, protegiendo así tu privacidad y gestionando la "memoria" de tus interacciones con ChatGPT.
You have complete control over what ChatGPT remembers. You can do this in two ways:
- From settings — Go Settings > Personalisation > Memory > Manage. You will see the complete list of saved memories. You can delete them one by one or delete them all with a single click.
- From the conversation Write “Forget I mentioned [X].” and ChatGPT will delete that memory and confirm it to you. You can also say “Erase all my memories”.
- Turn off memory completely — In Settings > Customisation > Memory, you can disable both “saved memories” and “chat history” separately. ChatGPT will function without personalisation.
ChatGPT Memory vs. Other AI Assistants
ChatGPT isn't the only assistant with memory, but its implementation is one of the most complete on the market. Let's see how it compares:
| Characteristic | ChatGPT | Claude | Gemini |
|---|---|---|---|
| Explicit memories | Yes | ✅ Yes (memory + projects) | Yes (Gems + Memory) |
| History review | ✅ Complete | ✅ Partial (payment plans) | ✅ Partial |
| Automatic management | Plus/Pro | ✅ All plans | ❌ No |
| User Control | ✅ Total | ✅ Total | ✅ Total |
| Chat without memory | ✅ Temporal Chat | Yes | Yes |
If you want to delve deeper into the differences between assistants, consult our Detailed comparison of Claude vs ChatGPT.
Frequently asked questions
Does ChatGPT remember previous conversations?
Yes. From April 2025, ChatGPT will be able to review all your previous conversations to give you more relevant answers. Free plan users will have access to a limited version covering recent conversations, while Plus and Pro plans will offer full access to your history.
La memoria de ChatGPT puede almacenar una cantidad significativa de información, pero hay límites.
Saved memories have a limit of approximately 1,500 to 1,750 words in total. When full, you need to delete old memories to add new ones. Plus and Pro users have automatic management that prioritises the most relevant memories.
How do I delete ChatGPT's memory?
You have two options: from Settings > Personalisation > Memory > Manage You can view and delete individual memories or all of them at once. You can also tell it directly in the chat “Forget I mentioned [X]” and it will delete it instantly.
Is ChatGPT's memory secure?
The memories are stored on the servers of OpenAI with its security standards. However, it is not advisable to save passwords, financial data, or highly sensitive information. You can disable memory at any time.
Can I use ChatGPT without it saving memories?
Yes. You can completely disable the memory in Settings, or use the function Temporary Chat for one-on-one conversations that you don't want to affect your profile or generate new memories.
Does memory function the same in the mobile app and on the web?
Yes, your memory syncs across all platforms: web, iOS app, Android app, and the desktop app. Memories you save on one platform will be available on all others. Learn more about how Optimising ChatGPT for your everyday.
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📅 Last updated: March 2026. Data verified with the OpenAI official documentation.
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