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Which AI should I use, and what AI should I use for my kind of work? Answer 5 quick questions and we'll match you to the assistant that fits — ChatGPT, Claude, Gemini, Grok or Perplexity.
Updated October 2026 · current models: GPT-6, Claude Opus 5.5, Gemini 4 Argon, Grok 4.7
Pick the closest. You can use it for everything later.
MultipleChat puts ChatGPT, Claude, Gemini, Grok and Perplexity in one window — so you don't have to pick. Run any prompt across them and see which answer is best.
Try MultipleChatEvery major assistant is good these days — the question is which one fits how you use AI. Here's the cheat sheet, with the models each one runs as of October 2026.
GPT-6 Astra · GPT-6.1 Sol · GPT-6 Luna
The all-rounder. Strong at coding, structured output and image generation, with voice and the broadest feature set. The best first AI for most people.
Opus 5.5 · Sonnet 5.5 · Haiku 5.5
The careful writer. Natural long-form prose, thoughtful editing and strong coding, and it handles long documents well.
Gemini 4 Argon · Gemini 3.8 Flash
The Google-native pick. Search-grounded answers, long files, and built into Gmail, Docs and Drive.
Grok 4.7
The direct one. Real-time access to posts on X, a less hedged tone, and solid on coding and tech topics.
Sonar Pro
The answer engine. Built around live web search with citations — the pick when you need a source for every claim.
Skip the quiz if you already know the job. Start with the first pick; if the answer isn't quite right, try the second.
| Which AI for… | Start with | Also try | Why |
|---|---|---|---|
| Writing & editing | Claude (Opus 5.5 / Sonnet 5.5) | ChatGPT (GPT-6) | Natural long-form prose and careful edits; ChatGPT is quick for short, structured copy. |
| Coding | Claude Opus 5.5 or ChatGPT (GPT-6) | Gemini 4 Argon | The usual first choices for code; test them on a real task from your own project. |
| Research with sources | Perplexity (Sonar Pro) | Gemini 4 Argon | Answers built around live web search, with citations you can open and check. |
| Long PDFs & documents | Claude or Gemini 4 Argon | ChatGPT | Both read long files well; Gemini fits if your files already live in Google Drive. |
| Images | ChatGPT (GPT Image) | Gemini (Nano Banana Pro) | Both turn a plain-language prompt into an image and let you edit it by chatting. |
| Google Workspace | Gemini (Google AI Pro) | — | Built into Gmail, Docs, Sheets and Drive, so it works where your files already are. |
| News & trends | Grok 4.7 | Perplexity | Real-time access to posts on X; Perplexity adds linked sources. |
| Everyday questions | ChatGPT | Claude | Broadest feature set, with voice and mobile apps. |
Prices in USD from each provider's pricing page; taxes and regional prices vary.
Step 1
Each option gives 0–3 points to ChatGPT, Claude, Gemini, Grok and Perplexity, based on what each does best.
Step 2
Main task, how current the information must be, documents, tone and budget.
Step 3
You see the full ranking. Close scores mean both will serve you — compare them on a real prompt.
The quiz is a starting point built on each assistant's strengths, not a benchmark. The surest test is to send the same prompt to several AIs and compare — that's what side-by-side comparison is for.
It depends on the job. For writing and careful editing, start with Claude (Opus 5.5 or Sonnet 5.5). For an all-round assistant with coding, voice and image generation, start with ChatGPT (GPT-6). For research with sources, use Perplexity. For Gmail, Docs and Drive, use Gemini (Gemini 4 Argon). For what's happening right now on X, use Grok 4.7. The quiz above weighs these for you in about 30 seconds.
If you can pay for only one, ChatGPT Plus ($20/month) is the safest all-rounder and Claude Pro ($20/month) is the pick if most of your work is writing. Google AI Pro ($19.99/month) makes sense if you live in Google Workspace. Or use MultipleChat Pro ($20/month) to get ChatGPT, Claude, Gemini, Grok and Perplexity in one place and stop choosing.
Claude (Opus 5.5) and ChatGPT (GPT-6) are the usual first choices for coding, with Gemini 4 Argon close behind. Results vary by language and codebase, so the fastest way to decide is to give all three the same real task and compare the answers side by side.
For research where you need to check sources, Perplexity is built around live web search with citations. Gemini is strong for search-grounded answers and long documents, and Claude is good at reading and summarising long PDFs carefully. Always open the cited sources before you rely on a claim.
Neither wins everywhere. Claude tends to be the better writer and editor, with a careful, thoughtful tone. ChatGPT has the broader feature set — image generation, voice, a large app ecosystem — and is a strong all-rounder. Many people use both: draft with one, check with the other.
Each answer adds points to ChatGPT, Claude, Gemini, Grok and Perplexity across five dimensions: your main task, how current the information must be, how much you work with documents, the tone you prefer, and your budget. The highest total is your match. It's a quick starting point based on each assistant's strengths, not a benchmark — close scores mean you should try both.
ChatGPT, Claude, Gemini, Grok and Perplexity all offer free plans with usage limits, and their main paid plans cost around $20 a month. Free plans are fine for trying an assistant; paid plans add higher limits and the strongest models.
