AI CHAT
Start the chat here. Keep one thread.
Two real answers in the browser before sign-in. Connect Telegram to save the same thread; open the current model catalog in @vustbot when you want to switch.
- 2 replies before sign-in
- Context for one follow-up
- No personal API key
THE LINEUP
Current models, one familiar chat
Start with VUST Fast here. In @vustbot, the runtime catalog adds everyday and flagship models with explicit access before anything is sent or charged.
Every delivered answer names the model that actually responded.
Everyday · pre-flagship
VUST Fast
GPT-5.6 Luna
VUST Smart
Gemini 3 Flash
VUST Deep
GPT-5.6 Terra
VUST Claude
Claude Sonnet 5
Flagships
VUST Max
Claude Opus 4.8
VUST Long
Gemini 3.1 Pro
VUST GLM
GLM-5.2
VUST Grok
Grok 4.5
See the difference
What one conversation looks like when the models are switchable.
What people use @vustbot chat for
- Model switchers
- Ask the same question to GPT-5.6, Claude Opus 4.8 and Gemini 3.1 Pro without leaving the conversation.
- Compare the answers side by side and keep the best one — no tab-juggling, no four separate subscriptions.
- No-card users
- Reach frontier models from a country or device where Western card subscriptions don't work.
- Start on the free tier or top up with Telegram Stars — no bank card, no extra apps, no website sign-up form.
- Mobile-first people
- Run AI from the same Telegram app that's already open all day, on phone or desktop.
- Frontier answers in-chat, with the conversation history kept in the thread you can scroll back to.
- Cost-watchers
- Default to a fast free model for everyday questions, escalate to a strong model only when a task is high-stakes.
- A genuine free tier for simple asks, plus metered access to GPT-5.6, Claude, Gemini, Grok and more when it matters.
How model-switching works
- 01
Open @vustbot in Telegram
No app install and no sign-up form — your existing Telegram identity is the login.
- 02
Ask your question
vustbot routes simple asks to a fast model automatically, or you pick a specific model yourself.
- 03
Switch models mid-conversation
Re-ask with a different model and the thread context carries over, so comparing answers is one tap — not a copy-paste across four browser tabs.
- 04
Pay only when you go strong
Fast everyday models are free. Frontier models draw from a daily and monthly allowance, or you top up with Telegram Stars.
Try it in Telegram
Open @vustbot and switch between frontier models in one chat — free tier, no card to start.
What's actually in the lineup
Real frontier models, not a thin wrapper
The current catalog spans GPT-5.6, Claude 5/4.8, Gemini, Grok 4.5, Kimi K3, DeepSeek V4, GLM-5.2, Qwen, MiniMax, Inkling, Muse, LongCat and Fugu. A trust footer shows which model answered.
A free tier that actually works
Everyday questions run on a fast free model, plus a daily run of a stronger model — no credit card required to get started.
One thread, many models
Unlike single-model apps, you switch providers inside one conversation and keep the context — so checking a second opinion is a re-ask, not a new chat in a new app.
Cardless access via Telegram Stars
Top up with Telegram Stars instead of a Western credit-card subscription. Stars availability and current pricing are managed in Telegram — check the live options inside the bot.
Frequently asked questions
Can I try the AI chat in my browser without signing in?
Yes. The public demo gives two successfully delivered VUST Fast answers in one contextual thread. Failed attempts do not use that allowance. Telegram sign-in then preserves the same conversation; the guest copy expires after 24 hours if it is not claimed.
Which AI models can I use in @vustbot?
The current 23-model catalog includes GPT-5.6 Luna/Terra/Sol, Claude Sonnet 5/Opus 5/Opus 4.8/Fable 5, Gemini 3 Flash/3.5 Flash-Lite/3.6 Flash/3.1 Pro, Grok 4.5, Kimi K3, DeepSeek V4, GLM-5.2, Qwen, MiniMax, Inkling, Muse Spark 1.1, LongCat and Fugu. Claude Opus 5 and Muse Spark 1.1 are manual previews; Auto does not select them yet.
Can I switch models in the same conversation?
Yes — that's the point. Re-ask with a different model and the thread context carries over, so you can put the same question to GPT-5.6 and Claude back to back and compare. It's one chat, not four separate apps.
Is there a free version, and do I need a credit card?
There's a genuine free tier: everyday questions run on a fast free model, plus a daily run of a stronger model — no credit card to start. When you want more frontier access you top up with Telegram Stars, not a card subscription.
How is this different from ChatGPT or a single-model app?
ChatGPT gives you one model. Single-model apps lock you into one provider. @vustbot lets you switch between several frontier models inside one Telegram conversation, keep the context, and pay only when you escalate to a strong model — without four subscriptions or a row of browser tabs.
Does it work without a Western credit card or extra apps?
Access is through Telegram, and you top up with Telegram Stars rather than a card-based website subscription. Stars availability and pricing are managed inside Telegram — check the current options in the bot. This is the main reason people in card-restricted regions use it.
Is Grok / DeepSeek / Gemini actually included?
Yes. Grok 4.5, DeepSeek V4, Gemini, GLM-5.2 and Kimi K3 are in the current catalog alongside GPT-5.6 and Claude. The bot always shows which model actually produced each answer.
Ready when you are
One chat. Every model.
Stop juggling four AI subscriptions and a wall of browser tabs. Ask once, switch models, keep the best answer — inside the Telegram you already use.