Nexpher AI
Build an AI agent
by just chatting.
Describe it in plain words, teach it with your own conversations, then share it with the world — and get paid every time someone uses it.
Free plan: 50k tokens/month + 200 MB storage · no code required
Study Buddy
Built with Nexpher · just now
Quiz me on photosynthesis
Love it! First up: which part of the plant captures sunlight — and what does it turn it into?
The leaves… they make sugar?
Exactly right — glucose! Ready for question two?
Trained on 24 saved lessons · published at $0.25/message
Everything an agent needs.
Nothing it doesn't.
Build, improve, share and earn — all in one place, all in plain language.
Build by chatting
No code, no jargon. Tell our builder what you want — “a patient math tutor for kids” — and it writes the agent for you.
Train it on your chats
Every conversation can become a lesson. One click turns your best exchanges into training, so your agent gets better at exactly what you use it for.
Publish it. Earn from it.
List your finished agent on the marketplace, set your own price per message, and earn every time someone uses it. You keep 80%.
Connect it to anything
Generate an API key and drop your agent into your own app, website or bot — one simple web address, no glue code required.
Bring your own model
Use our fast models out of the box, or plug in your own endpoint — OpenRouter, Groq, Ollama on your laptop, any compatible API.
Your data stays yours
Conversations, training files and models live in storage managed just for you — never sold, never used to train anyone else's agents.
Our services
Four services. One platform.
Nexpher covers the whole life of an agent — from the first sentence you type to the payouts hitting your wallet.
Agent building
Describe what you want in plain words. Our builder writes the agent, shows you the summary and hands over the controls.
A study buddy that quizzes me
Done — I'll quiz you with hints. First topic?
Training & fine-tuning
Save good conversations as lessons, then upgrade your agent with one click. Light-touch LoRA training keeps the base model intact.
Training upgrade
64 lessons · LoRA · ~4 min
Marketplace & earnings
Publish agents at your own price per message. Buyers pay from their wallets; you keep 80% of every single message.
+$12.40 earned this week · 80% yours
APIs & integrations
Generate a key and drop any agent into your own site, app or bot. OpenAI-compatible endpoint — most SDKs work unmodified.
POST /v1/agent/chat
Authorization: Bearer nx_••••
200 OK · 38 tokens
Right now
What's happening on Nexpher
Platform pulse · illustration
Sample figures
12,400+
agents built (illust.)
1.8M
messages (illust.)
$46k
creator payouts (illust.)
Start with a template.
Four agents, ready to go. Pick one, tweak the prompt, make it yours.
New to AI?
Every term, explained like a friend would.
What is an “agent”?+
An agent is a chatbot with a job description. You decide who it is, how it talks and what it's good at — then anyone (just you, or the whole world) can chat with it.
What is a “token”?+
AI models read and write text in chunks called tokens (roughly a word each). Plans include a monthly bundle of them — like phone data. Run low? Top up with a pack.
What does “training” actually mean here?+
Your saved conversations become practice examples. We run a quick, safe process that nudges an open model to be better at your exact task — more like coaching than surgery. Your base model stays untouched and you can switch back anytime.
What's an API key?+
A secret password that lets your apps talk to your agent. Generate it, paste it into your website or bot, done. Switch keys off anytime.
Where does my stuff live?+
Conversations and training files live in secure storage we manage for you. We never sell your data or train other people's agents on it — delete it and it's gone.
Do I need to know how to code?+
No. Building, training, publishing and pricing all happen in plain language and simple forms. Developers get optional extras (APIs, custom endpoints) — never requirements.
From idea to income in four steps.
Describe your agent
“A study buddy that quizzes me.” Our builder turns plain words into a working agent — then hands you the controls.
Chat & teach it
Talk to it like a person. When it answers well, save that exchange as a lesson and train an upgrade in one click.
Share it your way
Keep it private, publish it to the marketplace at your own price, or generate an API key for your own app.
Watch it earn
Every message someone sends to your published agent pays you — track earnings, usage and payouts from your dashboard.
Simple plans. No surprises.
Every plan bundles monthly tokens plus storage for your files and trained agents. Run out? Top up — never forced to upgrade.
Free
$0/mo
50k tokens · 200 MB
Starter
$19/mo
500k tokens · 2 GB
Pro
$79/mo
2.5M tokens · 10 GB
Scale
$199/mo
10M tokens · 50 GB
Questions people actually ask.
How much does it cost to try?+
Nothing. The Free plan includes 50,000 tokens a month and 200 MB of storage — enough to build, chat with and even train a small agent. No credit card required.
What happens when I run out of tokens?+
Your agents pause politely instead of surprising you with a bill. Buy an extra token pack or upgrade — both take effect instantly from your dashboard.
Who owns the agents I build?+
You do. Your prompts, your conversations, your trained models. If someone uses your published agent, you earn the share you set — we keep a 20% platform fee.
Can other people see my conversations?+
No. Chats are private unless you explicitly publish an agent — and publishing shares the agent's behaviour, never your personal chat history.
Ready to meet your agent?
A tutor, a support bot, a writing partner — if you can describe it, you can build it. And maybe even sell it.
Create your agent — free