Is Gemini's 1 million token context actually usable in full?
Yes. It enables use cases like analysing entire codebases or extensive research that other models can't handle. For most chat, it means you'll never hit the hard limit.
Gemini pillar guide
Gemini: how to save, export, and never lose a conversation
Everything you need to know about long Google Gemini conversations: how the 1 million-token context window really behaves, what actually causes problems in long Gemini sessions, how to save chat history before Google's 18-month retention deletes it, and what to do when Gemini seems to have forgotten a conversation.
Gemini's context window: 1 million tokens
Gemini 1.5 and 2.x models have a 1 million token context window, by far the largest of any major AI assistant. That's roughly 700,000+ words or several thousand pages of text. For most use cases you will never hit the hard context limit.
But the context limit isn't the only kind of limit Gemini users encounter. Session performance can slow well before the token cap, free-tier users have daily rate limits, and in very long conversations Gemini still shows attention drift where early instructions matter less than recent ones.
The limits that actually affect Gemini users
- Conversation session limits: very long conversations may become slower even before hitting the token limit.
- Usage rate limits: too many requests triggers a 'too many requests' error, not a context limit.
- History storage: Gemini saves conversations for 18 months by default, or 72 hours if Apps Activity is off. No bulk export.
- Attention drift: in very long conversations, instructions given early may have less influence on later responses.
How to save Google Gemini chat history
When you use Gemini with your Google account, conversations are saved to Gemini Apps Activity and retained for 18 months by default, then automatically deleted. If you turn Apps Activity off, conversations are only saved for 72 hours.
- Keep Gemini Apps Activity on: Settings → Activity, toggle on and set auto-delete to 'Keep until I delete manually'.
- Google My Activity (myactivity.google.com) → filter by Gemini Apps to browse and search history.
- Manual copy to Google Docs or Notion, or print to PDF for individual conversations.
- thredly: paste any Gemini conversation into the web app and click Summarize to store a structured summary privately to your account, independent of Google's 18-month retention.
Gemini forgot my conversation, what to do
- Not in sidebar history: Gemini Apps Activity was off (72-hour window) and it has since expired.
- Old conversation disappeared: auto-delete timer, 18 months by default, or shorter if you set it that way.
- Context lost mid-session: the conversation still exists but attention drift has reduced Gemini's recall of earlier content, re-state important instructions.
- Using Temporary Chat: explicitly designed not to persist, deleted as soon as you close the session, no recovery.
How to prevent losing Gemini conversations
- Turn on Gemini Apps Activity and set auto-delete to 'Keep until I delete manually'.
- Save important outputs to Google Docs immediately, don't rely solely on conversation history.
- For anything you'd hate to lose, paste the conversation into the thredly web app and click Summarize, the summary is stored privately to your account and outlives Google's retention window.
Related guides
Frequently asked questions
Can I download all my Gemini conversations at once?
Not with a built-in feature. Google doesn't currently offer a bulk Gemini conversation export. Access history through My Activity, or use thredly for ongoing capture.
Can Google support recover a deleted Gemini conversation?
Generally no. Google doesn't maintain a backup of user-deleted conversations for recovery.