An AI companion built for continuity
The AI that
remembers you.
Nyxiss is a personal AI with persistent memory across conversations, native voice, vision, and her own personality. Conversations that build over time, not reset every session.
Free tier · No credit card · 10 messages per day on GPT-5 · Voice trial
Why Nyxiss
Every other AI starts from zero.
You explained your project last week. Your preferences yesterday. The tone you want. Today's chat doesn't remember any of it. Nyxiss does.
Capabilities
Built to feel continuous, not transactional.
Persistent memory
Facts, preferences, and projects retained across sessions. Searchable by Nyxiss when relevant — and viewable by you on a dashboard with full GDPR export.
Consistent personality
Nyxiss has her own voice — direct, restrained, with mood that drifts naturally. No corporate hedging, no excessive enthusiasm. The same character every time.
Autonomy modes
Choose how proactive she is: passive (replies only), companion (gentle check-ins), or active (initiates topics, recalls past threads). Always under your control.
Voice in and out
Speak with her using Whisper transcription. She replies with natural Nova TTS. Hands-free conversations during commutes, walks, or work.
Vision & image generation
Upload a screenshot or photo — she sees and analyzes it. Ask her to draw, she generates the image inline. No external tools, no context-switching.
Multilingual native
Czech and English are first-class — not machine-translated. German and Polish coming. Switch languages mid-conversation; context carries over.
How it works
Three steps. Then a relationship.
Sign up free
20 messages a day, no card. Try her voice, vision, and personality.
Talk normally
Tell her about you, your work, what matters. She quietly forms a memory in the background.
Come back tomorrow
She remembers — your projects, mood, the dog's name. No re-briefing.
Pricing
Start free. Upgrade when you're hooked.
Free
20 messages/day. No memory. Try the personality.
Plus
500 messages, persistent memory, voice, vision, 50 images.
Pro
1,500 messages, autonomy modes, 150 images, priority queue.
FAQ
Quick answers.
How is this different from ChatGPT or Claude? ⌃
Nyxiss is built around continuity. She holds memory across all your sessions (not just one chat), has a single consistent personality with mood, and can initiate conversations on her own when set to active mode. ChatGPT and Claude are powerful general assistants; Nyxiss is a companion that grows with you.
What model powers her? ⌃
Under the hood she uses OpenAI models (GPT-4 family) plus Whisper for voice transcription and gpt-image-1 for image generation. The personality, memory, and autonomy logic are entirely ours.
Is my data private? ⌃
Yes. Servers in the EU, GDPR-compliant. You can export everything she remembers about you, or wipe it entirely, from your memory dashboard. No training on your data.
Can I cancel anytime? ⌃
Yes. Cancel any time from your account — no questions, no friction. Your memory stays intact in case you come back.
Is she a replacement for a therapist or doctor? ⌃
No. Nyxiss is a companion AI, not a medical or mental health professional. She'll listen and engage thoughtfully, but for serious health concerns, please consult a qualified human.
Stop re-introducing yourself to AI.
Meet someone who actually remembers. Free to try, no card required.