AI Chat

One Telegram Chat. Every AI Model.

Switch between GPT-5, Claude Opus 4.8, Gemini 3.1 Pro, Grok and more inside a single conversation. Ask once, compare answers, keep the best — no four subscriptions, no browser tabs.

Free tier. No card — pay with Telegram Stars.Answers from ChatGPT, Claude, Gemini & Grok
Open @vustbot in Telegram
10 frontier modelsNo card — Telegram StarsFree tier to start

The Lineup

Frontier models from every major lab — in one chat

ChatGPT (GPT-5, GPT-5-mini), Claude (Sonnet 4.6, Opus 4.8), Gemini (3 Flash, 3.1 Pro), Grok 4.3, DeepSeek, GLM 5.2 and Kimi. Start free, switch any time, and a trust footer shows which model answered.

Fast models are free; frontier models draw from a daily/monthly allowance or Telegram Stars.

See the difference

Real moments where switching models in one chat beats a single-model app.

Compare two models, one question

You ask once

Which database fits a 50M-row analytics workload — Postgres or ClickHouse?

Two answers, same thread

GPT-5 weighs operational simplicity and existing Postgres skills; Claude Opus 4.8 stresses columnar scan speed for analytical queries. You see both takes in one conversation and keep the one that fits — no copy-paste across tabs.

Free everyday asks

Simple request

Rewrite this email so it sounds friendlier but still professional.

Fast free model

Handled in seconds by a fast free model — no card, no quota anxiety for everyday tasks. Strong models stay reserved for the questions that actually need them.

Cardless frontier access

The blocker

ChatGPT Plus won't accept my card, and I'd rather not run a VPN just to pay.

Telegram Stars

Start on the free tier or top up with Telegram Stars, and reach GPT-5, Claude, Gemini and Grok from the same Telegram you already have open — no Western card subscription, no separate website sign-up.

02·Practical use cases

What people use @vustbot chat for

Model switchers

Ask the same question to GPT-5, 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 VPN, 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, Claude, Gemini, Grok and more when it matters.

03·How it works

How model-switching works

01Open @vustbot in Telegram

No app install and no sign-up form — your existing Telegram identity is the login.

02Ask your question

vustbot routes simple asks to a fast model automatically, or you pick a specific model yourself.

03Switch 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.

04Pay 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.

04·Same tool · in Telegram

Telegram

Try it in Telegram

@vustbot · Open @vustbot and switch between frontier models in one chat — free tier, no card to start.

Open in Telegram

05·Quality & trust

What's actually in the lineup

Real frontier models, not a thin wrapper

Answers come from the labs themselves: ChatGPT (GPT-5, GPT-5-mini), Claude (Sonnet 4.6, Opus 4.8), Gemini (3 Flash, 3.1 Pro), Grok 4.3, DeepSeek, GLM 5.2 and Kimi. A trust footer shows which model answered each reply.

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

More VUST tools

AI Search

Web search with cited sources — quick answers or deep multi-query research.

AI Summarizer

Summarize long articles, YouTube videos, Reddit threads and PDFs.

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.

Open @vustbotSee plans & Stars