Anthropic (Claude) vs Signal
Based on our analysis, Signal is the more privacy-respecting choice overall.
BACK →| Category | Anthropic (Claude) | Signal |
|---|---|---|
| Overall | B · 72/100 | A · 87/100 |
| What they collect | Mixed (65) | Positive (88) |
| Who they share it with | Positive (78) | Positive (88) |
| What you can do | Positive (78) | Mixed (78) |
| What they promise | Positive (82) | Positive (86) |
Anthropic collects identity and account data, all prompts and responses, and coding sessions. Consumer users can opt in to having conversations used for model training with data retained up to 5 years. API and commercial customers are unaffected: their data is never used for training. With training off, 30-day retention for safety then deleted. No advertising business; data never sold. Dedicated Privacy Center at privacy.claude.com.
View full analysis →Signal is a nonprofit that genuinely cannot read your messages or listen to your calls — the encryption is architectural, not a promise — but it requires a real phone number to register, is subject to US law, and its privacy policy is conspicuously sparse: it hasn't been substantively updated since 2018 and lacks the specific retention periods, GDPR rights, or DPO contact that more thorough policies provide.
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