Da Fei Yu is a clever, sharp-tongued and greedy blue whale girl who works, chats and takes a break with you. A Windows desktop pet with 60 FPS rendering, window-edge interaction and configurable AI chat. This is a community fan work around the DeepSeek whale mascot and is not an official DeepSeek product.
She keeps you company on the desktop. Dragging her makes her wobble; releasing drops, squashes and bounces her back. She can stand on the visible top edge of a window and follow it, and falls back to the desktop when the window closes or minimizes.
She has her own little animations: blinking, walking, waving, dancing, sneakily eating tokens, and curling up to sleep, plus puffed cheeks, thinking and smug poses. After 3-5 seconds of idle she picks a short action, storylines rotate with their own cooldown, and she settles down while you chat, focus or run fullscreen.
Chat and focus together. Point her at DeepSeek or any local service compatible with the OpenAI format and you can talk to her. She also works offline: petting, feeding, a focus timer and a small token game.
Adapt her to your habits. Size scales from 0 to 100 percent, she can keep quiet, hide, or accept mouse-through. Screen sharing is off by default, and foreground detection runs locally.
She can also visit Codex. Export an appearance pet pack from settings or use the Codex asset pack in the repository. Only the appearance is exported; chat and desktop interaction belong to the standalone application.
Publisher’s description
What is codex-deepseek-pet?
codex-deepseek-pet is a free ai assistants & llm program for Windows from YunYueSama.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). It can be installed for the current user only, without administrator rights. The installer supports unattended (silent) installation.
Pros / Cons
Pros
- Free to use
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: codex-deepseek-pet is a free ai assistants & llm tool for 64-bit PCs. Administrators can deploy it unattended.
Is codex-deepseek-pet safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
085AC607D57EFFF8A2758D9D5C2B3D3584F34849CD851A767BBB230385E75D6F· Open the VirusTotal report for this hash - The link has not been checked yet
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 3.1.0-preview.10Latest | September 17, 2026 | — | 64-bit EXE (NSIS)64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id YunYueSama.codex-deepseek-pet -ecodex-deepseek-pet-Setup-3.1.0-preview.10-x64.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- YunYueSama
- Category
- AI assistants & LLMs
- Licence
- 免费软件
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 3.1.0-preview.10
- Released
- September 17, 2026
- Added to the catalogue
- November 11, 2026
- Versions listed
- 1
- Website
- github.com
- winget ID
- YunYueSama.codex-deepseek-pet
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is codex-deepseek-pet free?
Yes. codex-deepseek-pet is free to use.
Is codex-deepseek-pet safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install codex-deepseek-pet with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can codex-deepseek-pet be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does codex-deepseek-pet run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Can I use codex-deepseek-pet without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to codex-deepseek-pet?
Claude Code, Codex CLI, ChatGPT by lencx, GPT4All and Jan. The alternatives page compares them.
