Popular AI services
Claude
The AI chat known for natural, careful writing
Popularity
—
Last update
July 2026
License / pricing
Free tier available
Category
Popular AI services
What it does
Anthropic's assistant excels at long documents, reasoning and prose. Free tier available.
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals
Before you start
- Setup difficultyEasy to start
- Command lineNot required
- API keyNot required
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
Claude FAQ
- Do I need to install anything or write code to use Claude?
- No install needed — it runs in the browser.
- Does Claude work on a phone?
- Yes, it works on a phone.
- Can I use Claude commercially?
- The licence is 商用サービス. Read the licence text before using it commercially.
How it compares
The conditions that decide whether you can actually use it, side by side.
| Tool | Command line | API key | Sends data out | Phone | Commercial use |
|---|---|---|---|---|---|
| Claude (this page) | Not needed | Not needed | Yes | Yes | Yes |
| ChatGPT | Not needed | Not needed | Yes | No | Yes |
| Gemini | Not needed | Not needed | Yes | Yes | Yes |
| Perplexity | Not needed | Not needed | Yes | Yes | No |
"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.