| Capability | Keepance | ChatGPT |
|---|---|---|
| Chat becomes a file on your disk | Automatic | No |
| Works offline | Yes (Ollama for inference too) | No |
| Your data leaves your machine | Only the AI request itself, via your key | Every conversation goes to OpenAI |
| Multiple models | Claude, OpenAI, Gemini, Ollama | OpenAI family only |
| Bring your own API key | Required | Uses OpenAI's billing |
| Search your own conversations | Full semantic search across your workspace, PDFs included | Basic text search in chat history |
| Edit a past answer alongside the chat | Open the file in the built-in editor | Copy, paste, lose context |
| Image attachments in chat | Paste, drag, paperclip. Vision-aware per provider. | Yes, native |
| PDF chat | Drop a PDF, Claude reads it natively. Others get text-extract. | Yes, since 2023 |
| Plugin / extension model | Sandboxed, MIT-licensed marketplace | GPT Store custom GPTs |
| Read aloud (TTS) | Local Piper, no cloud | Cloud-only |
| Long-context handling | [Compress] passes summarize batches when you blow the window | Hard fail at the model limit |
| UI languages | English, Espanol, Deutsch | OpenAI ships many; the chat content matches your prompt |
| Try before you install | Free web demo (no account, BYOK optional) | chat.openai.com |
| Founder workflow templates | 15 built in + community marketplace | GPT Store, variable quality |
| Pricing | $0, $49 one-time, $99 lifetime | $20/mo Plus, $200/mo Pro |
| Image generation | No | DALL-E + Sora built in |
| Voice mode | Local Parakeet.cpp input, local Piper output | ChatGPT Voice Mode, cloud |
| Mobile | Read-only via cloud sync workaround | Polished iOS + Android |
ChatGPT is shaped around a conversation being the unit of work. You ask, it answers, maybe you iterate, and eventually you close the tab. The answer lives in the conversation thread, and the conversation lives in OpenAI's cloud. If you come back three weeks later wanting the answer, you have to remember which conversation it was in.
Keepance is shaped around a file being the unit of work. You ask, the AI answers, but the answer ends up as a Markdown file in a folder on your hard drive. The next time you come back you open the file, not a conversation log. You can edit the file by hand, link it to other files, search across every file you've ever created, and back it up the way you back up any folder.
For one-off answers, ChatGPT is faster because there's no file system, no editor, no workspace. For the kind of work where you come back to the same topic across weeks or months (a pitch deck that evolves, a financial model that you iterate, a customer interview synthesis that grows), Keepance is better because the document exists independently of any single conversation.
The second distinction is privacy. ChatGPT stores every conversation on OpenAI's servers, eligible to be used for model improvement unless you opt out in settings. Keepance never sees your conversations. The app talks directly from your machine to your chosen AI provider using your own API key. The Keepance binary is never in the data path.
Most founders end up using both. ChatGPT for quick answers and exploration, Keepance for the long-lived documents that define the business. The specific moment Keepance wins is when you realize you've had the same pricing conversation with ChatGPT four times across three months and can't find any of them. That's the workflow Keepance fixes.
Want your chats as files, not tabs?
Keepance is free to download. Windows, Mac, Linux.
Download Keepance