Gemini

AI assistants · 2の代替ツール

Gemini ties deeply into a Google account, search, and documents. If you want an assistant whose published policy is not to retain chats or train on them, other options exist.

なぜ Gemini から離れる？

AI chats often include work, health, or family details that are more sensitive than a search history. Check how each provider describes logging and training before you paste that kind of material.

Googleの限界・リスク

• Tied to a Google account, so chats can connect with search, documents, and other services
• How conversations are used for training depends on Google’s terms and settings
• An account suspension can cut off access to chat history
• Consumer and business products may handle data differently

選び方ガイド

全部試す必要はありません。あなたの優先順位に合わせて絞り込みましょう。

1 For zero-access encryption and a published no-training policy: Proton Lumo
2 To try several models quickly without signing up: Duck.ai
3 For sensitive topics, re-read the official policy before you type them in

クイック比較

プライバシー・使いやすさ・機能・コスパの4軸で評価しています。

詳細比較表 →

ツール	Privacy	Ease of use	Features	Value	総合
Proton Lumo	★★★★★	★★★★★	★★★★★	★★★★★	16/20
Duck.ai	★★★★★	★★★★★	★★★★★	★★★★★	18/20

すべての代替ツール（2）

Proton Lumo

A Swiss AI assistant that says it does not log chats

★★★★★ OSS

Proton’s AI assistant. Official materials say chats are not logged, not used for training, and that the code is public. A free plan is available. Lumo Plus is $12.99/month or $119.88/year ($9.99/month equivalent).

Published no-training policy
Zero-access encryption
Public code
Free plan

⚠ Check official docs for supported platforms

Free + paid Easy Read more →

Duck.ai

Several AI models, anonymously, with no account required

★★★★

DuckDuckGo’s AI chat. Official help says it does not track how you use the models, store your prompts, or train on your data. Several models are available for free; paid members can use higher-tier models.

No account required
Multiple models
On-device conversations (per official help)
Published no-training policy

⚠ Official availability is listed as the U.S., U.K., E.U., and Canada; Japan is not in the rate table

Free + paid Easy Read more →

移行のヒント

1 Start with everyday, non-sensitive questions
2 You often do not need to migrate old Gemini threads—begin new chats in the new tool
3 Do not mix up default search settings with the AI chat product
4 Check official pricing and limits before paying

Google Takeout ↗ 移行ガイド一覧