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Pi vs Open WebUI
Pi edges Open WebUI on our editorial score (4.0 vs 4.2), but Pi is the stronger pick if you want live voice calls, while Open WebUI fits better if voice notes or image sharing or custom characters matter more.
0| Pi0 | Open WebUI0 | |
|---|---|---|
| Editor score | 4.0 / 5 | 4.2 / 5 |
| Price | Free | Free |
| Price band | Free | Free |
| Free tier | Yes | Yes |
| Price detail | Free, with no usage limit and no paid tier — no card required. | Free and open-source; self-host via Docker/pip. An enterprise tier exists but consumer use is free. |
| Adult content | No adult mode | No adult mode |
| Voice | Live calls | Voice notes |
| Images | No | Yes |
| Video | No | No |
| Memory | Yes | Yes |
| Custom characters | No | Yes |
| Companion types | Any character | Any character |
| Platforms | Web, iOS, Android | Web |
| Runs locally | No | Yes |
Pi — our take
Completely free, genuinely warm, and no upsell wall. Not a roleplay product, but an excellent listener.
- Entirely free with unlimited voice
- Consistently rated the most empathetic free model
- No ads
Open WebUI — our take
The power-user pick: run any model locally or in the cloud with zero data retention and full control.
- Zero data retention when self-hosted
- Any model via Ollama/OpenAI-compatible APIs
- Huge community sharing prompts and tools
Pi vs Open WebUI — common questions
Which is cheaper, Pi or Open WebUI?
They cost the same on our recorded numbers (Free).
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?
Pi: No adult mode. Open WebUI: No adult mode. This directory is SFW — we record whether a mature mode exists so you know before signing up, and we describe no explicit material.