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Character.AI vs Soulthread
Character.AI edges Soulthread on our editorial score (4.4 vs 3.8), but Character.AI is the stronger pick if you want live voice calls and image sharing, while Soulthread fits better if voice notes matter more.
0| Character.AI | Soulthread | |
|---|---|---|
| Editor score | 4.4 / 5 | 3.8 / 5 |
| Price | $7.92/mo | $9.99/mo |
| Price band | Under $10/mo | Under $10/mo |
| Free tier | Yes | Yes |
| Price detail | c.ai+ $9.99/mo or $94.99/yr (~$7.92/mo). Free chat is unlimited but carries ads, a daily swipe cap and a Charms currency. A cheaper (c.ai) lite tier exists but its price varies by region. | Free Chat Monthly $9.99, All Access (adds Story Mode) $19.99 per a third-party directory (2026-07); official site shows no public pricing page. Free tier has daily chat/voice quotas. |
| Adult content | No adult mode | Optional mature mode |
| Voice | Live calls | Voice notes |
| Images | Yes | No |
| Video | No | No |
| Memory | Yes | Yes |
| Custom characters | Yes | Yes |
| Companion types | Any character | Any character |
| Platforms | Web, iOS, Android | Web, iOS, Android |
| Runs locally | No | No |
Character.AI — our take
The default starting point: unmatched variety and the most generous free tier in the category.
- 20M+ community characters
- Unlimited free text chat
- Best-in-class prose quality
Soulthread — our take
Memory-led companion community where characters remember you, post on their own, and answer in expressive TTS.
- Layered long-term memory across sessions
- Agents post autonomously to a social feed
- Create and publish your own agents
Character.AI vs Soulthread — common questions
Which is cheaper, Character.AI or Soulthread?
Character.AI is the cheaper of the two at $7.92/mo, against $9.99/mo for Soulthread.
Which one has a free tier?
Both do — you can try either without paying.
Which remembers conversations better?
Both keep context across sessions. The practical difference is elsewhere: voice support differs between them.
Which handles adult content differently?
Character.AI: No adult mode. Soulthread: Optional mature mode. This directory is SFW — we record whether a mature mode exists so you know before signing up, and we describe no explicit material.