Chat With GPT-5 and Claude at the Same Time
Chat with GPT-5 and Claude together in one thread. Switch mid-conversation or compare side by side, all in one MultiChats subscription.
Yes, you can chat with GPT-5 and Claude at the same time. The easiest approach is to keep one conversation open and switch the active model between messages, so GPT-5 drafts and Claude polishes without losing context. If you want a true head-to-head, branch the chat and send the same prompt to both models, then read their answers side by side. MultiChats lets you do both inside a single app and a single subscription, so you are not juggling two tabs or two bills to compare two models.
Most people pick one chatbot and stick with it. That works fine until you hit a task where the other model is clearly better, and then you are copying text between tabs, paying two providers, and trying to remember which window had the good answer. Running GPT-5 and Claude together fixes that, and once you have tried it on a real piece of work it is hard to go back.
Why use GPT-5 and Claude together
No single model wins everything. GPT-5 and Claude are both excellent general-purpose models, but they have different personalities and different blind spots. The point of using both is to play each to its strengths on a given task instead of forcing one model to do work it is mediocre at.
In day-to-day use, a few patterns show up again and again:
Claude tends to write with a more natural voice and holds tone well over long passages, which makes it a strong choice for essays, emails, and editing.
GPT-5 is a fast, capable all-rounder that is great for structured reasoning, quick first drafts, and breaking a problem into steps.
Both are strong at code, so it pays to ask each one and keep whichever solution is cleaner for your case.
For fresh facts you usually want a model paired with real-time web search, which is its own consideration regardless of which base model you start from.
If you want a deeper breakdown of how the two stack up across writing, reasoning, and coding, we wrote a full ChatGPT vs Claude comparison. The short version: the answer depends on the task, which is exactly why having both on tap beats committing to one.
Method 1: switch between GPT-5 and Claude mid-conversation
The fastest way to use both is to pick a model per message inside one thread. Start a chat with GPT-5, get a draft, then switch the model to Claude for the next reply. The conversation keeps its full history, so Claude can see exactly what GPT-5 produced and build on it instead of starting cold.
A typical mid-chat workflow looks like this:
Ask GPT-5 for a first pass: an outline, a rough draft, or a list of options.
Switch the active model to Claude and ask it to tighten the writing, fix the tone, or stress-test the logic.
Switch back to whichever model you trust for the final step, whether that is formatting, a summary, or a code cleanup.
Because the thread is shared, you never re-paste context, and you never lose the earlier turns when you change models. This is the core idea behind switching AI models mid-conversation, and it is one of the things a single-model app simply cannot do.
Method 2: compare GPT-5 and Claude side by side
When you genuinely do not know which model will do better, do not guess. Branch the conversation so the same prompt goes to GPT-5 and Claude separately, then read both answers next to each other. This is the quickest way to see how each model interprets your question, and it often surfaces ideas that neither model would have given you alone.
Side-by-side comparison is especially useful for high-stakes writing, tricky code, and any prompt where you suspect one model might hallucinate. You get a built-in second opinion in seconds, and you keep whichever response is stronger.
A real example: draft, refine, fact-check
Say you are writing a launch announcement. Here is a flow that uses three models in one thread:
Draft with GPT-5. Ask for three angles and a rough first version. GPT-5 is quick and gives you raw material to react to.
Tighten with Claude. Switch models and ask Claude to cut the fluff and match your brand voice. The draft is already in the thread, so it has everything it needs.
Fact-check with a web-search model. Switch to Gemini or another model with live search to verify any dates, numbers, or claims before you ship.
Three models, one conversation, no copy-paste. If you want to stretch the same idea across even more tools, see how people run GPT-5, Claude, and Gemini together for research and writing.
Which model for which task
Treat the table below as a starting point, not a law. Models change, and your own prompts matter a lot. The habit worth building is asking yourself which strength a task needs, then routing it to the right model.
Task | Often a good fit | Why |
|---|---|---|
Long-form writing and tone | Claude | Natural voice, holds style over long passages |
Quick drafts and structured reasoning | GPT-5 | Fast, capable all-rounder for step-by-step work |
Coding | GPT-5 or Claude | Both strong; ask both and keep the cleaner solution |
Fresh facts and current events | A web-search model | Live data beats a model's training cutoff |
If coding is your main use, our guide to the best AI app for coding goes deeper on how multi-model access helps when one model gets stuck on a bug.
Doing this in MultiChats: one thread, one subscription
MultiChats puts 50+ models behind a single subscription, including GPT-5, Claude, Gemini, Grok, Mistral, and Perplexity. You can switch the active model per message, branch to compare, and keep one continuous thread that any model can read. It runs on iOS, Android, and the web, so your chats follow you across devices.
A few things make the multi-model workflow practical rather than gimmicky:
No silent model downgrades. The model you pick is the model that answers, with transparent, predictable limits.
Saved memories and folder organization keep long projects coherent across many models and chats.
Real-time web search and reading any webpage by URL cover the fact-checking step inside the same app.
No ads and no training on your data, so your conversations stay yours.
GPT-5 and Claude are both included from $20.99 a month on the Pro plan (or $199.99 a year), which is a big part of the appeal: you are comparing two models without paying two providers. There is a free tier with 5 free models if you want to try the basics first, and a Pro+ plan at $34.99 a month for heavier use like multiple image generations at once and video analysis.
Honest note: if you only ever use one model and never feel the urge to compare, a single subscription to that one tool may be all you need. The case for an app like this gets strong the moment you find yourself switching tabs, hitting different bills, or wishing you could check a second model's answer. If that sounds familiar, you may also like the broader argument for putting all AI models in one app.
Frequently asked questions
Can I use GPT-5 and Claude in the same conversation?
Yes. In MultiChats you choose a model per message inside one thread, so you can ask GPT-5 first and Claude next. The conversation keeps its full context, so the second model sees everything the first one wrote.
How do I compare GPT-5 and Claude answers side by side?
Branch the chat so the same prompt runs through both models separately, then read the two responses next to each other. It is the quickest way to spot which model handled the task better.
Do I need two subscriptions to use both models?
No. Both GPT-5 and Claude are included in one MultiChats subscription, alongside 50+ other models. You are not paying two providers to compare two models.
Which is better, GPT-5 or Claude?
There is no permanent winner. Claude often shines at long-form writing and tone, GPT-5 is a fast all-rounder for reasoning and drafts, and both are strong at code. Using both lets you match the model to the task instead of betting on one.
Can I add more models to the workflow?
Yes. You can bring Gemini, Grok, Perplexity, and others into the same thread, which is handy when you want a draft from one model, a polish from another, and a live-search fact-check from a third.
The bottom line
Using GPT-5 and Claude together gives you the best of both: draft fast with one, refine with the other, and compare when it matters, all in one continuous chat. You can do it by switching models mid-conversation or by branching for a true side-by-side. If you would rather have every major model in one place for a single predictable price, see the MultiChats plans and try GPT-5 and Claude in one thread.