claude.ai
Sign in - Claude
- Body text
- Anthropic Sans
- Headings
- Anthropic Sans
Last checked Sep 23, 2026. Run this site and want it removed? Request an opt-out.
All text on the page
- Anthropic Sans95%
- Anthropic Serif4.3%
- Anthropicons0.7%
Loading
- Served by
- Self-hosted
- Font files
- 380 KB
- Preloaded fonts
- 3
- Families declared
- 10 (7 never used)
- Platform
- Custom or unknown
- Font hosts
- assets-proxy.anthropic.com
History
Each row is a stretch of time where the fonts stayed the same. Rows marked Web archive are estimates from saved copies of the page and less reliable than our own crawl.
- Sep 23, 2026Our crawlAnthropic Sans
Every font face the page declares (10)
| Family as declared | Weights | Variable | Used |
|---|---|---|---|
| anthropic-sans | 300 800 | Yes | Yes |
| anthropic-serif | 300 800 | Yes | Yes |
| Anthropic Serif Fallback Georgia | 400 | No | No |
| Anthropic Serif Fallback Times | 400 | No | No |
| Anthropic Serif Fallback DejaVu | 400 | No | No |
| Anthropic Serif Fallback Noto | 400 | No | No |
| Anthropicons-Variable | 400 700 | Yes | Yes |
| OpenDyslexic | 400, 700 | No | No |
| Atkinson Hyperlegible Next | 1 450, 451 549, 550 649, 650 1000 | Yes | No |
| anthropic-mono | 300 800 | Yes | No |