About ChatHub
TL;DR
ChatHub is an ai chatbot aggregator and multi-model ai chat platform that lets you use multiple AI chatbots side by side, comparing responses from models like GPT-5, Claude 4.5, Gemini 3, DeepSeek, and 20+ others in a single interface. With over 300,000 active users, 10.6k GitHub stars, and a 4.7-star Chrome Web Store rating, it has become the go-to ai chat comparison tool for anyone who wants to query multiple LLMs simultaneously without juggling separate tabs. The Pro plan starts at $14.99/month (billed annually) with capped queries, while the Unlimited plan at $24.99/month (annual) removes all limits, and both include AI image generation, document uploads, and cross-platform apps for iOS, Android, Windows, and Mac.
ChatHub is the best multi-model ai chat comparison tool available, offering a polished side-by-side chatgpt alternative experience across 20+ AI models with no API key management required. Its combination of broad model support, cross-platform availability, and genuinely useful comparison workflow makes it essential for anyone who regularly needs multiple AI perspectives, though the subscription cost may give pause to users who only occasionally need multi-model access.
Best for: Researchers, prompt engineers, content creators, and knowledge workers who regularly need to compare AI model outputs side by side, and teams evaluating which AI provider best suits their workflow without managing multiple API subscriptions.
What is ChatHub?
Overview
ChatHub started life as an open-source Chrome extension built in TypeScript and React, and it has grown into a full multi-model ai chat client available as a web app, browser extension, desktop app (Windows and Mac), and mobile app (iOS and Android). The core premise is simple but powerful: instead of opening separate tabs for ChatGPT, Claude, Gemini, and other AI services, this ai chatbot aggregator lets you type a single prompt and see up to six different AI models respond simultaneously in a split-screen layout. This side-by-side ai chat comparison tool eliminates the tedious copy-paste workflow that most people use when they want a second opinion from a different model.
The extension has amassed over 300,000 active users and earned a 4.7-star rating on the Chrome Web Store from nearly 1,300 reviews. Its GitHub repository has attracted 10.6k stars, reflecting strong community interest in the project since its early open-source days under a GPL-3.0 license.
Key Capabilities
ChatHub's headline feature as an ai assistant app is multi-model simultaneous chat, supporting up to six chatbots at once in a configurable grid layout. The supported roster includes GPT-5, Claude 4.5, Gemini 3, Llama 3.3, Grok, DeepSeek, Qianwen, and many more. Beyond text chat, ChatHub offers AI image generation using FLUX.2, Stable Diffusion, and other models, with up to 1,000 generations per month on the Unlimited plan. File and document uploads allow you to feed PDFs, spreadsheets, and images into any supported model for analysis.
The platform includes smart web access that gives AI models real-time information, a curated prompt library for common tasks, full-text searchable local chat history, Markdown rendering with code syntax highlighting, conversation sharing, and dark mode. You can also connect any OpenAI-compatible API endpoint to create custom chatbot integrations, which makes ChatHub flexible enough for teams running self-hosted models.
Pricing Analysis
ChatHub operates on a freemium model with two paid tiers. The free tier allows side-by-side comparison of two chatbots with limited usage. ChatHub Pro costs $19/month or $14.99/month billed annually (about a 20% discount), and includes 10,000 basic model queries, 1,500 advanced model queries, 300 image generations, and 300 document uploads per month. ChatHub Unlimited costs $39/month or $24.99/month billed annually (35% off), removing all query caps for both basic and advanced models, providing 1,000 image generations, and unlimited document uploads.
Both paid plans include all premium features: six-bot simultaneous chat, real-time web access, file uploads, multi-chat summarization, prompt library access, full-text search history, code preview, conversation sharing, and priority support. No API keys are required for either plan, which is a significant convenience advantage over bring-your-own-key competitors like TypingMind and BoltAI. Team pricing with seat-based discounts is available by contacting sales.
Compared to Poe at $19.99/month and TypingMind's $39 one-time fee (plus your own API costs), ChatHub's pricing sits in competitive territory. The key question is whether the included AI model access justifies the subscription versus managing your own API keys at potentially lower per-query costs.
Who Should Use This
ChatHub is ideal for researchers, content creators, developers, and knowledge workers who need a chatgpt alternative that lets them cross-reference AI outputs or find the best response across multiple models. It is particularly valuable for prompt engineers who need an ai assistant app to test how different models handle the same instruction, and for teams evaluating which AI provider to standardize on. Professionals who use AI for critical decisions like legal research, medical information gathering, or technical analysis will appreciate the ability to instantly verify one model's answer against several others.
Casual users who only interact with one AI model, or those deeply embedded in a single ecosystem like ChatGPT Plus, will find less value in paying for multi-model access. Similarly, developers who prefer granular API control and cost optimization will likely prefer a bring-your-own-key solution like TypingMind.
The Bottom Line
ChatHub delivers a genuinely useful capability that no single AI provider offers natively: instant, side-by-side comparison of multiple AI models from one prompt. The execution is polished, the model support is broad, and the cross-platform availability means you are not locked into the browser extension. The main trade-off is cost: at $24.99/month for truly unlimited usage, you are paying a premium for convenience over managing individual API subscriptions. For anyone who regularly consults multiple AI models, ChatHub eliminates enough friction to justify that premium.
Pros
- Side-by-side comparison of up to six AI models simultaneously, eliminating the need to copy-paste prompts across separate tabs and services
- Broad model support covering GPT-5, Claude 4.5, Gemini 3, DeepSeek, Llama 3.3, Grok, and 20+ others, all accessible without individual API keys
- True cross-platform availability with web app, Chrome extension, desktop apps for Windows and Mac, and mobile apps for iOS and Android
- Built-in AI image generation, document analysis, web access, and a curated prompt library that go well beyond simple chat aggregation
- Local chat history with full-text search and data export keeps your conversations private and portable
Cons
- Subscription pricing at $14.99-$24.99/month (annual) is more expensive than bring-your-own-key alternatives like TypingMind's $39 one-time fee for users with low to moderate usage
- Free tier is very limited, restricting users to two simultaneous chatbots with capped usage, making it difficult to fully evaluate the product
- Web-based responses can show inconsistencies, and real-time web access quality varies depending on the underlying model
- Limited customization of chatbot interaction parameters compared to API-direct tools, with fewer options for temperature, system prompts, and fine-grained model configuration
How to Use ChatHub
- 1Install the Browser Extension or App
Visit chathub.gg and click the install link for your platform. For Chrome or Edge, install the extension from the Chrome Web Store. Alternatively, download the native desktop app for Windows or Mac, or the mobile app for iOS or Android.
- 2Create a Free Account
Sign up with your email address to access the free tier. The free plan allows you to compare two AI chatbots side by side with limited monthly queries, giving you a taste of the core comparison experience.
- 3Select Your AI Models
Use the model selector to choose which AI chatbots you want to query simultaneously. Available models include GPT-5, Claude 4.5, Gemini 3, DeepSeek, Llama 3.3, Grok, and many more. Free users can select two; premium users can select up to six.
- 4Type Your Prompt and Compare Responses
Enter your prompt in the shared input bar at the bottom of the screen. All selected models will process your query simultaneously, displaying their responses in a split-screen grid layout for easy side-by-side comparison.
- 5Use Advanced Features
Upload PDFs, spreadsheets, or images for AI-powered document analysis. Browse the curated prompt library for templates. Enable web access to give models real-time information. Try AI image generation with FLUX.2 or Stable Diffusion.
- 6Upgrade for Unlimited Access
Choose ChatHub Pro at $19/month ($14.99/month billed annually) for 1,500 advanced model queries and 300 image generations, or ChatHub Unlimited at $39/month ($24.99/month billed annually) for unlimited queries across all models and 1,000 image generations.
Key Features of ChatHub
Core
Query up to six AI chatbots simultaneously in a configurable split-screen grid.
Pre-built prompt templates for common tasks to streamline workflows.
Full-text searchable conversation history stored locally on your device for privacy.
Rich Markdown rendering with syntax highlighting for code blocks.
Available as browser extension, web app, desktop app (Win/Mac), and mobile app (iOS/Android).
AI Features
Access GPT-5, Claude 4.5, Gemini 3, DeepSeek, Llama 3.3, Grok, and more without API keys.
Generate images using FLUX.2, Stable Diffusion, and other models with up to 1,000 monthly generations.
Upload PDFs, spreadsheets, and images for AI-powered analysis across any supported model.
Give AI models real-time web information for up-to-date responses.
Integration
Connect any OpenAI-compatible API endpoint to add custom or self-hosted models.
Collaboration
Share conversations with others via generated links.
Key Specifications
| Attribute | ChatHub |
|---|---|
| Free Tier | |
| API Access | |
| Platform Support | Web, Chrome/Edge Extension, Windows, Mac, iOS, Android |
| AI Powered | |
| Max Simultaneous Models | 6 |
| Requires API Keys | |
| Local Data Storage | |
| Open Source |
Use Cases
- Comparing responses from different AI chatbots for research purposes.
- Generating content by leveraging multiple AI perspectives.
- Practicing language skills with various AI models.
- Developing and testing prompts across different AI platforms.
Integrations
LLM Provider
Browser Extension
Custom Integration
Limitations
ChatHub requires an internet connection for all functionality since it relies on cloud-based AI APIs, and the subscription model can become costly compared to direct API access for high-volume users who are comfortable managing their own keys. The free tier's two-bot limit and usage caps make it inadequate for serious evaluation.
