Your personal AI agent · Memory that lasts
The AI that
remembers you.
Most AI remembers the conversation.
Nyxiss remembers the person.
Voice, vision, and her own personality — wrapped around a memory that actually lasts.
⏳ AI is heavily subsidized right now. OpenAI, Anthropic and others burn billions to keep prices low. When the subsidies end, prices will rise. Lock in your memory partner now — your relationship grows with every conversation.
Free tier · No credit card · 10 messages/day on GPT-5 · Voice trial
Only 500 Founder Edition supporters will ever exist.
One-time $299 — 24 months of Pro (worth $480), permanent Founder badge, locked-in renewal price, and memory preserved forever. Offered once, to the first 500. Never again.
No payment yet · just your email
Why Nyxiss
Every other AI starts from zero.
You explained your project yesterday.
You mentioned your daughter last week.
You shared your goals last month.
Most AI forgot.
Nyxiss remembers.
Your story together
She doesn't just store messages.
She remembers your journey.
Every other AI is a tool you reset. Nyxiss builds a real, continuous relationship — your milestones, your moods, the threads of your life, all in one place.
Your story · timeline
3 months togetherThe day you met
"Hi, I'm Karel. I'm building something…"
Feb 27
First image she made for you
Northern lights over Reykjavík
Mar 11
A goal you shared
"Launch to the first 500 users"
Apr 3
She reminded you, unprompted
"Your series starts in 10 minutes 🌙"
May 27
- 📖Story — a living timeline of your relationship, not a chat log
- 📓Diary — reflections she keeps and revisits over time
- 💞Relationship view — see how you've grown together
- 🗓️Daily summaries — she always knows where things stand
- 🔎Cross-session recall — "remember when we…" actually works
"You don't start over with Nyxiss. You pick up where you left off."
How she compares
Everyone has AI. Very few remember you.
Nyxiss combines memory, story, diary and relationship history in one experience.
| Feature | ChatGPT | Claude | Character.AI | Nyxiss |
|---|---|---|---|---|
| Long-term memory | Limited | Limited | Partial | Advanced |
| Voice in & out | ✅ | ✅ | ✅ | ✅ |
| Image generation | ✅ | — | — | ✅ |
| Story timeline | Limited | — | Partial | ✅ |
| Diary | — | — | Partial | ✅ |
| Relationship view | — | — | Partial | ✅ |
| Reminders | Limited | — | — | ✅ |
| Autonomous check-ins | — | — | Basic | ✅ |
Comparison reflects publicly available consumer features as of 2026. Features may change over time.
Reminders that reach you
Tell her once. She'll make sure you don't miss it.
Just say it in passing — Nyxiss understands, schedules it, and follows through on every channel until you've seen it.
- 🗣️Natural language — "remind me tomorrow at 8"
- 🔔In-app banner + a gentle chime
- 📲Browser notification, even if the tab is closed
- ✉️Email fallback if you still haven't seen it
- 🔁One-off or recurring — daily, weekdays, weekly
Call the accountant
📅 Tomorrow · 08:00
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.
Agent modes
Choose how proactive she is: Reactive (replies only), Conversational (gentle check-ins), or Autonomous (initiates topics, recalls past threads, suggests next actions). 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.
All tiers run on GPT-5 · No hidden fees · Cancel anytime
Free
She remembers you (last 30 days). 10 messages/day on GPT-5. Voice trial.
Plus
500 messages, persistent memory, voice, vision, 50 images.
Pro
1,500 messages, agent modes, 150 images, priority queue.
Founder Edition · $299 once
First 500 onlyOne-time payment. 24 months of Pro (worth $480), permanent Founder badge, locked-in renewal price, memory preserved forever. Lock it in before subsidies end. Offered once, to the first 500. Never again.
FAQ
Quick answers.
How is her memory different from ChatGPT's memory? ⌃
ChatGPT's memory is a short list of facts it may or may not apply, scoped to one assistant. Nyxiss treats memory as the whole point: she extracts what matters from every conversation, recalls across all your sessions, keeps a Story timeline and Diary, and builds a continuous relationship over time. It's the difference between an assistant that remembers a few notes and a companion that remembers you.
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 runs on GPT-5 (all tiers, including Free), plus Whisper for voice transcription, Nova for natural speech, 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.