Pi vs Character.AI vs Replika vs Luzia
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Pi
Free, supportive AI companion from Inflection, relaunched in 2026
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Character.AI
Chat and roleplay with AI-built characters and personas
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Replika
Long-running AI companion app with memory, calls and avatars
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Luzia
Free AI assistant for 85M+ Spanish and Portuguese speakers
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| RECATOOLS Score | 6 / 10 | 6 / 10 | 5.6 / 10 | 6.4 / 10 |
| Capability | ||||
| Value for money | ||||
| Ease of use | ||||
| ASEAN readiness | ||||
| API quality | ||||
| Pricing | Free | Freemium | Freemium | Freemium |
| Free tier | Free on web, iOS and Android; no paid consumer plan published. Inflection said in Aug 2024 it would cap free message volume | Full access with queue times during peak hours | Free Use: limited text chat with your Replika; Luka may deny free use at its discretion. Paid tiers unlock relationship status, calls, selfies and memory features | Free with ads and no account: chat, writing, translation, maths, code, transcription, image generation, PDF/image upload and web search; LuziClaw agent mode free in beta in selected countries |
| Paid from | — | c.ai lite from $4.99 a month in the US | Pro, Ultra and Platinum priced in-app only (US App Store plans from $7.99) | Luzia+ from $4.99/mo in the US App Store (price varies by country) |
| Has API | ✗ | ✗ | ✗ | ✗ |
| Open source | ✗ | ✗ | ✗ | ✗ |
| Free to use | ✓ | ✓ | ✓ | ✓ |
| Users | — | 20M+ monthly active users (below ~28M 2024 peak; varies by source) | — | — |
| Founded | 2023 | 2021 | 2017 | 2023 |
| Maker | Inflection AI, Inc. | Character.AI (Google licensing deal) | Luka, Inc. | — |
| Verdict | Pi is still one of the most pleasant AI companions to talk to, and its July 2026 relaunch added useful everyday tools: memory, reminders, to-do lists, a news brief and group activities. It is free, on the web and on iOS... |
Character.AI is still the dominant platform for building and chatting with AI personas — a very large user-made character library, near-zero friction to start, and personas consistent enough to keep sessions running long... |
Replika remains one of the most polished AI companions, and its 2026 rebuild brings real improvements in memory and calls. Its history is a caution: a €5 million Italian fine over age checks and data handling, an FTC com... |
Luzia built a huge Latin American and Spanish audience by living inside WhatsApp, with no sign-up and answers in the user's own language. That shortcut is mostly gone: Meta banned general-purpose AI chatbots from WhatsAp... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.