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Ask once. ChatGPT, Claude, Gemini, Grok, Perplexity, and more can compare, challenge, and verify each other before you use the result.
Your task
"Review this client proposal, check the claims, and turn it into a short deck."
One model creates the first answer.
Other models find weak spots.
You get a usable answer or file.
Checked result
Use the proposal after changing these 3 claims.
The models agree on the structure, but flag one unsupported number, one weak source, and one missing caveat.
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Users
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Companies Worldwide
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Concurrent users
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Model comparisons
MultipleChat is for the moment when an AI answer has to become a decision, message, document, deck, sheet, or image.
Compare
Ask once and see where models agree or disagree.
Verify
Claims, sources, assumptions, and gaps get questioned.
Use files
Use PDFs, notes, docs, spreadsheets, and research as context.
Deliver
Turn the checked result into text, docs, decks, sheets, or images.
Customer use · reviewed answers
Send one question, file, or set of notes into MultipleChat. One AI drafts, another checks the reasoning and facts, and the final answer is easier to trust and reuse.
The first model turns your prompt, files, and project context into a complete starting answer.
Another model acts as a quality reviewer, looking for weak reasoning, missing context, and factual errors.
Research and Verification modes compare claims, sources, and contradictions before the answer reaches you.
MultipleChat combines the strongest parts into one final response and keeps sources and disagreements available to inspect.
Get access to the latest models: ChatGPT Astra, Claude Fable 5.1, Gemini 3.8 Flash, Grok-4.6, and Perplexity Sonar Pro—all from a single interface on web, iOS, and Android. Chat with files, create new documents, and edit uploaded files directly in chat, similar to ChatGPT.
Switch seamlessly
Pick the best AI for each question.
Start with one model, compare several, or let them work together when the output needs review, research, images, or files.
Chat models
ChatGPT Astra
OpenAI
Claude Fable 5.1
Anthropic
Gemini 3.8 Flash
Grok-4.6
xAI
Perplexity Sonar Pro
Perplexity
Image models
GPT Image
Image editing
GPT Image Edit
AI Collaboration is not four models magically writing at once. The main workflow is simple: one model creates a draft, a second model reviews and rewrites it, and you receive the improved final answer.
1. Ask once with your context
Paste a question, upload a file, or add notes. MultipleChat keeps the task together.
2. Pick the mode
Use Smart for draft-to-editor improvement, Compare for separate side-by-side answers, or Research when sources matter.
3. Improve after the answer
Use Team Reason, Auto Fact Check, or sources as add-ons when the result needs another pass.
The core of MultipleChat: one model drafts inside your context, a second reads that draft, challenges the reasoning and writes the answer you see. Points the reviewer would question are surfaced beside it instead of smoothed over.
One model, or a team
Use one model when speed matters. Add a reviewer when the answer has to hold up.
Shared context
Your files and history stay shared across the pass, so the reviewer sees exactly what the drafter saw.
Step 1
Type the same prompt you would use in a normal AI chat.
Step 2
The second model reads the draft against the same task and rewrites it.
Step 3
Stronger claims survive the rewrite. Points worth checking are listed separately.
One model for speed, or a drafter and an editor when the answer has to hold up.
MultipleChat input
Prompt + file
Ask once with context
MultipleChat output
Synthesized answer
How they work together
Prompt + file → drafter → editor → final answer
Two models by default. In Conversation and Co-operative modes, the others add a short critique first.
Upload PDFs, scans, notes, or drafts. Ask questions, clean up the content, and turn it into usable documents.
PDFs, scans, screenshots, and long documents.
Improve structure, tone, and wording.
Get key points, decisions, risks, and action items.
Reports, briefs, proposals, and emails.
Write one prompt and get different visual directions at the same time. Compare the results, choose the strongest image, then keep editing with text instructions until it is ready to use.
Create
Run 5 image models from one prompt and compare the outputs side by side.
Edit
Upload an image, remove backgrounds, change details, and chain edits with natural language.
Parallel generation
One prompt creates five directions.
Prompt
"Create a premium product image for a black wireless speaker on a clean studio background."
Model 1
Model 2
Model 3
Model 4
Model 5
Selected image
Best resultEdit with text
"Remove the background, make the product shadow softer, add a blue version, and crop it for a social ad."
Ask the same question once and compare independent answers from latest models side by side. It is useful when a decision, recommendation, or claim matters.
Latest models are only available in paid versions.
Approve Supplier B. It is 18% cheaper and the delivery date is one week faster.
The first answer focuses on price and speed, but does not check switching cost or contract terms.
Good for
Fast first draft
Useful start, but too confident.
Do not approve yet. Supplier B has a two-year lock-in and migration fees are missing.
The second answer catches risk that the first answer ignored.
Watch-out
Switching cost changes the decision.
Better for risk review.
Supplier A may be safer. Public reviews show better support and fewer renewal complaints.
The third answer adds outside context and a different decision angle.
Evidence to add
Source renewal terms before deciding.
Useful when current research matters.
Inspect independent generations.
Spot divergence in real time.
Route tasks to the strongest model mix.
One prompt cannot build a real file. You describe the document, get a rough version, paste a correction, get another — round after round, spending tokens on a conversation that never ends in something you can send. Studios work the other way round: guided questions first, your whole file as context, then a structured build that finishes as a document, deck, spreadsheet or image.
Documents
Answer guided questions, add source files, and create reports, proposals, briefs, and summaries with export formats ready to share.
DOCX, PDF, Markdown, HTMLSlides
Build editable slide decks from notes, files, or reports with guided structure, then review the story and facts before export.
Fact-checked PPTX decksSpreadsheets
Upload larger spreadsheets, clean messy tables, summarize data, build formulas, and turn spreadsheet work into decisions.
XLSX, CSV, TSV, XLSVisuals
Use structured prompts, model comparison, editing, background removal, and downloads to create usable visual assets.
Generate, edit, downloadPrompt Optimizer helps before you ask. Team Reason is what users click after an answer, so another AI challenges the logic, finds weak assumptions, and improves the final result.
Turns a rough request into a clearer prompt so the first answer starts in the right direction.
Searches current sources and brings back evidence you can inspect before using the answer.
Checks claims, flags weak evidence, and points out missing context before you send or publish.
Stress-tests the answer with another AI: it challenges assumptions, checks reasoning, finds gaps, and rewrites the result into a stronger version.
Use Prompt Optimizer before asking, then Team Reason when the answer needs a stress test.
Stress-test with Team ReasonProjects are persistent workspaces: add instructions once, import files from Google Drive or code from GitHub, and let every AI model work from the same knowledge.
1. Add context
Upload documents, paste notes, or add project rules once.
2. Connect sources
Bring in docs, PDFs, sheets, slides, repositories, and code files.
3. Work with AI
Research, write, review, explain, and code with shared context.
AI Humanizer helps turn stiff, generic, or obviously AI-written text into clearer writing with a more natural voice. Use it for emails, articles, essays, proposals, support replies, and Document Studio outputs that need a final human pass.
Two ways to humanize in MultipleChat
Option 01
Rewrite an AI answer with another model when you want the final response to sound more natural.
Option 02
Add a writing sample, then let MultipleChat match that style across the text you want to humanize.
Manage seats, billing, access, projects, and reusable AI context in one place.
Seats, billing, and access.
Invite and manage users.
Review and reuse work.
Files and instructions together.
Customer outcomes
Compare models, check weak spots, and turn the result into files you can actually use.
Start
Prompt, files, notes, or a rough draft.
See stronger answers faster.
Catch gaps before sharing.
Export decks, docs, images.
Input
Messy request
MultipleChat
Models work together
Output
Ready to use
Log in or sign up to test MultipleChat. Discover all features with plans starting at $20/mo.
Compare plans and choose the right level for multi-model AI work.
MultipleChat gives paid users access to the latest models ChatGPT Astra, Claude Fable 5.1, Gemini 3.8 Flash, Grok, and Perplexity Sonar Pro from one workspace. For images, MultipleChat also includes GPT Image, Stable Diffusion XL, Stable Diffusion 3, Leonardo, Ideogram, Recraft, Nano Banana, and Nano Banana Pro. You can switch models for different tasks, compare responses, use web-connected research, work with files, generate images, and choose the model that fits the job instead of opening separate subscriptions and tabs. MultipleChat is also available on iOS and Android through the App Store and Google Play.
Explore all AI models →AI Collaboration lets multiple AI models work together instead of answering in isolation. You can assign roles, choose a collaboration mode, and let models draft, review, debate, fact-check, or synthesize one stronger answer. AI Team is the workflow that launches those models together and shows the result, including useful disagreements when the models see the problem differently.
Learn about AI Collaboration →AI disagreements happen when different models produce conflicting facts, assumptions, recommendations, or reasoning. MultipleChat surfaces those conflicts instead of hiding them, so you can see uncertainty, compare the logic, and decide which answer is better supported.
Learn about AI disagreements →Yes. Open the Chat History page at multiplechat.ai/chat_history, click Import Chats, and upload a .json or .csv export. MultipleChat reads exports from MultipleChat, ChatGPT, Claude, and other AI platforms, and you can add several files at once (up to 10MB each). Only your conversations are imported — files, attachments, and provider settings are not. Keep Skip duplicate chats checked so the same chat is never added twice. Memory is separate: it is not imported automatically, so copy your old preferences or custom instructions and paste them into a new chat as context. For a full step-by-step walkthrough of exporting from ChatGPT or Claude and importing here, read the support article on importing chat history or memory.
Read the full import guide →MultipleChat AI Humanizer helps rewrite stiff or generic AI text into clearer, more natural writing while keeping the meaning. In MultipleChat, you can humanize text directly, use a built-in humanizing mode inside AI Collaboration, or create an AI Humanizer project with a style example file so the AI can learn your preferred tone and rewrite the remaining text to match it. Compared with basic AI humanizer tools, MultipleChat gives you more control because you can choose models, work with files, use project context, and combine humanizing with editing, review, and document workflows. The feature is meant for polishing your own writing, improving readability, and adapting tone. It should not be used to misrepresent authorship, evade rules, or cheat; use it responsibly and follow the rules of your school, workplace, or publication.
Learn about the AI Humanizer →Start with Pro if you want one workspace for the major AI models and everyday multi-model work. Choose Smart when you need higher usage, larger workflows, and more room for file-heavy tasks.
Compare plans →Yes. MultipleChat AI has a native iOS app for iPhone and iPad: Download MultipleChat AI on the App Store. It is also available for Android on Google Play: Download MultipleChat AI on Google Play. Use the same MultipleChat account on web and mobile so your subscription and workspace access stay connected.
MultipleChat uses Stripe for secure billing. Stripe is one of the world's leading payment infrastructure providers, used by businesses to process card payments, subscriptions, invoices, and receipts securely. For login and authentication, MultipleChat uses Firebase Authentication by Google, an enterprise identity platform used by companies and government organizations to manage secure sign-in, account access, and identity protection. This matters because billing and authentication are handled by specialized, trusted providers instead of custom-built payment or login systems. You can cancel anytime, there are no hidden fees, and you only pay for the subscription you choose.
See plans and pricing →Yes — MultipleChat AI Desktop for macOS and Windows is a separate product that runs entirely on your computer. Three key differences: it is BYOK — you bring your own API keys and use your own LLMs (OpenAI, Anthropic, Google and more, or fully local models via Ollama / LM Studio); it is a one-time $250 purchase with a free trial, not a subscription; and it may not include every web-app feature — in particular AI Collaboration, Compare Mode and the Studios stay web-only. Your chats, documents and keys never leave your machine.
Explore the desktop app →Still have questions?
Visit the Support centerMultipleChat AI is now on iOS and Android.
Download the app from the App Store or Google Play and sign in with your MultipleChat account.
MultipleChat AI Desktop for macOS & Windows.
Private, local AI with your own API keys — free trial, $250 one-time to keep it.
