Top 5 All-In-One AI Platforms for Multiple Models

Having access to various AI tools is no longer just a nice-to-have; it's a must. ChatGPT is great for creative writing. Claude handles long documents and computer code better. Gemini is strong at finding information. Also, new models like Deepseek, Grok, and Qwen keep appearing, each with its own special abilities.

The old way involved paying for three or four different services, juggling multiple logins, and losing track of your conversation every time you moved to a new platform. That method is both costly and tiring.

All-in-one AI platforms fix this issue. They gather many models under one system - one login, one bill, and one continuous conversation. However, not all of them work well. Some only provide a few old models. Others stop remembering your chat when you switch between AI tools. A few are just ChatGPT with a new look and exaggerated marketing claims.

The five platforms listed below were tested for the range of models they offered, if they kept conversations continuous, their media features, and their prices. These are the ones that truly deliver.

How We Chose Them

Every platform on this list had to meet four conditions:

Many strong models - They needed to offer AI tools at least as good as GPT-4 from different companies (like OpenAI, Anthropic, Google, Meta, and others).
Keep conversation going - Switching from one AI tool to another should not make the conversation start over.
More than just chatting - They should also have other helpful features, such as uploading files, searching the internet, or creating images.
Good price - It should cost less than paying for separate subscriptions for each model.

1. Cabina.AI

cabina.ai all in one ai website
Cabina.AI is a complete platform that lets you use many different AI programs, or "models," all in one chat. You can find almost every main AI model here. For writing, you can use things like ChatGPT and Gemini. For making pictures, there's Midjourney and DALL-E. For videos, you have Hailuo and Runway. And for sound, there are tools from ElevenLabs and Google.

The best part of this platform is that all the AI models know what you've talked about before. For example, you can start asking Gemini questions, then switch to Claude to look closely at answers, and then use ChatGPT to write something. All these models will remember the whole chat history. You won't need to copy-paste or say "as I said before."

There's a "Compare mode" where you can give the same task to two AI models at the same time. Their answers will show up next to each other. This helps a lot when you want to choose which AI writes better emails, makes better product pictures, or creates videos in a certain way. Need to understand a complex piece of text quickly? The platform also includes an ai text explainer https://cabina.ai/tools/explain-everthing that breaks down any information you feed it into clear, simple explanations.

Key features:

20+ LLMs including GPT, Claude, Gemini, Grok, Deepseek, Llama, Mistral, Qwen
Image generation with Midjourney, DALL-E, Flux, Stable Diffusion, Ideogram, Leonardo
Video generation with Hailuo, Luma, Runway, Pika, Veo
Audio and transcription from ElevenLabs, Google, OpenAI, Whisper
Shared context across all models
Compare mode for side-by-side model testing
RAG folder uploads for custom knowledge bases
AI Roles (custom instructions)
Magic tools: Translator, Summarizer, Humanizer, Prompt Generator, Prompt Enhancer
AI In-Painter for image editing (inpaint, remove objects, expand, stylize, remove background, upscale, variations)

Pros:

Largest model selection on this list
Shared context works reliably between text, image, and video models
Compare mode saves hours of manual testing
Pay-as-you-go and subscription options
Free plan includes 100 tokens

Cons:

So many features that new users may feel overwhelmed
Some advanced tools require a few minutes to learn

Pricing:

Free plan - 100 free tokens
Pay-as-you-go - from $3 top-up
Monthly subscription - from $4.99
Yearly subscription - from $4.72/month (billed annually)

2. ChatHub

ChatHub is a tool, available as a browser add-on or a website, that lets people chat with different large language models (LLMs) at the same time. It works with models like GPT, Claude, Gemini, and open-source ones such as Llama and Mistral.

Its main function is to show chats side-by-side. You type one question, and all the AI models you picked answer at once. This makes it simple to see how different AIs write, how well they think, and if their facts are correct.

ChatHub also has a collection of prompts, which are saved instructions you can use again and again. You can also upload files, like pictures or text documents, to ask questions about them.

However, ChatHub is not good at making media. It does not have tools for creating images or videos. It is only for text-based conversations. Also, it does not always remember the whole conversation when you switch between models, unlike Cabina.AI.

Key features:

Multiple LLMs in one interface (GPT, Claude, Gemini, Llama, Mistral)
Side-by-side chat for comparing responses
Prompt library for saving instructions
Basic file uploads (images, text files)
Browser extension available

Pros:

Very clean, distraction-free interface
Side-by-side comparison is fast and intuitive
Free tier available
No credit system - straightforward usage

Cons:

No image or video generation
Shared context is weaker than competitors
Fewer models than Cabina.AI or Poe

Pricing:

Free tier - basic access
Pro plan - around $10 - 15/month (varies by model usage)

3. Merlin

This tool is a Chrome extension, and it also has apps for computers and phones. It brings various AI models, such as GPT, Claude, Gemini, Llama, and Mistral, directly to any webpage, meaning you don't have to leave your browser to use them.

You can open Merlin's chat window by simply pressing a keyboard shortcut (Ctrl+M or Cmd+M). Once open, you can use it to summarize the article you're reading, rewrite a sentence, translate text, or ask questions about the page content. The AI uses the information shown on your screen for context.

Merlin also offers a feature to chat with any website. You can ask questions about a YouTube video, a PDF document, or a long blog post, and Merlin will quickly provide answers. It can even generate basic images using DALL-E or Stable Diffusion, although these images may not be as high-quality as those produced by dedicated platforms.

The biggest drawback is that Merlin doesn't keep a long-term memory of your chats. It does not remember conversations across different websites or when you use it at different times. It is designed for quick, specific tasks rather than ongoing projects.

Key features:

Browser extension with keyboard shortcuts
Access to GPT, Claude, Gemini, Llama, Mistral
Summarize any webpage, video, or PDF
Chat with websites and documents
Basic image generation
200+ tools including translation and rewriting

Pros:

Works anywhere on the web
No tab-switching required
Free tier with daily credits
Extremely fast for quick tasks

Cons:

No persistent context across sessions
Image generation is basic compared to Cabina.AI or Midjourney
Credit system adds up for heavy users

Pricing:

Free tier - daily credits
Paid plans - start around $10 - 20/month

4. Monica

Monica is like a versatile tool for AI assistants, offering various models in one place. You can get Monica as a Chrome extension, a computer program, or a phone app. It lets you use AI tools like GPT, Claude, Gemini, and Deepseek all from one screen. Similar to Merlin, it works in your web browser and responds to quick keyboard commands.

What makes Monica stand out is its many built-in features. Users can get summaries of YouTube videos, talk to PDF documents, make pictures using DALL-E or Stable Diffusion, create short videos, and even search the internet with AI help. The platform can handle over 50 different types of documents for you to upload and look at.

Monica also has a collection of pre-set prompts and allows you to design your own AI personalities. For example, you could create an AI that talks like a job recruiter, a funny comedian, or a formal business analyst, much like how Forefront AI's system works.

The main issue is when you switch between different AI models during a conversation; it often forgets what was said before. Monica works best for single tasks rather than long projects where you need to change AI models often.

Key features:

Browser extension, desktop, and mobile apps
Access to GPT, Claude, Gemini, Deepseek
Summarize videos, PDFs, and web pages
Image generation with DALL-E and Stable Diffusion
Basic video creation
Custom AI personas
50+ document format support

Pros:

Works across multiple devices
Wide range of built-in tools
Free tier with daily credits
Persona system adds flexibility

Cons:

Context does not persist well when switching models
Credit system becomes expensive for daily heavy use
Less powerful for large projects or team collaboration

Pricing:

Free tier - daily credits
Paid plans - start around $10 - 20/month

5. Hix.ai

Hix.ai is a versatile platform created for writing and editing. It offers access to various large language models like GPT, Claude, and Gemini, making it useful for writers, marketers, and anyone who creates a lot of text. The platform provides a document editor where users can easily input content and then use different AI models to rewrite, expand, summarize, or translate it. A helpful feature allows users to compare how two different AI models process the same text side-by-side.

Additionally, Hix.ai includes "Chat with PDF" and "Chat with URL" functions, enabling users to ask questions about uploaded documents or web pages. While it has some basic image generation, this isn't its main purpose. The platform does not, however, offer tools for video or audio. Also, unlike Cabina.AI, the understanding between different AI models within Hix.ai is not as strong; for instance, if you switch from GPT to Claude during a chat, the new model might not fully grasp the previous conversation.

Key features:

Document editor with multi-model rewriting
Access to GPT, Claude, Gemini, and others
Side-by-side model comparison for text
Chat with PDF and Chat with URL
Basic image generation
Translation and summarization tools

Pros:

Excellent for long-form writing and editing
Clean document-focused interface
Free tier available
Good for non-technical users

Cons:

Weak shared context between models
No video or advanced audio tools
Image generation is basic

Pricing:

Free tier - limited words per month
Paid plans - start around $15 - 20/month

Every tool is made for a distinct kind of person. ChatHub is the easiest choice if you want to put AI responses next to each other to see the differences. Merlin and Monica are good for people who need AI help right in their web browser for fast jobs. Hix.ai mainly helps with writing and changing documents, using many different AI programs.

But for those who require everything - words, pictures, videos, sounds, connected information across all AI programs, and a way to compare that truly saves effort - Cabina.AI is the fullest tool mentioned here. Its free plan lets you try it out without any danger. You can pay as you use it or get low-cost monthly plans (starting at $4.99), meaning no one will need to pay for five different AI tools anymore.