CLAUDE SANDBOX

Claude’s sandbox.
Now for ChatGPT too.

Q: How do I switch to a different sandbox?

Below an answer, open Change file processing, choose another option and select Run again. That change applies to the conversation only. To change the default for future chats, open Account → File preferences → Default file processing. A choice you make in a conversation takes priority over your account default.

The Claude sandbox is Anthropic’s code-execution environment, where code runs in Python and Bash on your files. Use it with Claude, or keep chatting with ChatGPT while Claude’s sandbox does the work behind the scenes.

Get started free Which chats can use it ↓

Included with Pro, Smart, Team Pro and Team Smart plans. Uses your shared AI allowance.

Runs in chats with

Claude

ChatGPT

Chatting with

ChatClaude Runs onClaude sandbox

budget_q4.xlsxYour uploaded workbook

“Compare our Q4 budget with actual spend and flag every line that is over by more than 10%.”

Claude writes and runs the code

$ python compare_budget.py budget_q4.xlsx
variance = actual / budget - 1
flagged = lines[variance > 0.10]
wb.save("q4-variance.xlsx")

12%Software

15%Events

19%Hiring

27%Travel

4 of 22 budget lines are more than 10% over. Travel is the largest, at 27%.

q4-variance.xlsxExample download

Illustrative example, not a live result. Actual outputs depend on your files and request.

Python + BashScripts, tools and file work

2 chat modelsClaude or ChatGPT

13 formatsSpreadsheets, documents, slides, images

CheckedEvery download is scanned

WHAT YOU CAN DO

A full workspace for file-heavy tasks.

Claude’s sandbox is a strong fit for multi-step file work: transforming workbooks, checking calculations and building documents.

Transform workbooks

Restructure sheets, add calculated columns and keep numbers as real numeric cells.

Analyze and verify

Calculations are run and checked in code, so answers are based on observed results.

Create charts

Build charts from your data, then see them in the answer and as downloadable images.

Build documents

Create Word, PowerPoint and PDF files from data, notes or an existing file.

Python and Bash

Scripts and command-line steps for jobs that go beyond a single formula.

Pair it with ChatGPT

Prefer ChatGPT’s style? Chat with ChatGPT and let Claude’s sandbox run the code.

Downloads can include XLSX · DOCX · PPTX · PDF · CSV · TSV · JSON · TXT · Markdown · PNG · JPEG · WebP · GIF. Office files are macro-free, and every file is security-checked before you can download it.

BEST OF BOTH

Chat with ChatGPT. Execute with Claude.

Pair ChatGPT’s conversation with Claude’s sandbox. ChatGPT stays your chat model: when a request needs code, it hands a precise task to Claude’s sandbox, gets the observed results back and explains them to you.

ChatGPT says when Claude’s sandbox did the execution, so you always know where results came from.
Up to two separate execution tasks per answer.
Anthropic receives the task and eligible files; OpenAI receives the results.
Uses allowance for both providers, from your shared plan allowance.

YouAsk ChatGPT with your file
ChatGPTPlans the task and writes the brief
Claude sandboxRuns the code on your files
ChatGPTExplains the results and the downloads

THREE STEPS, ONE CONVERSATION

How the Claude sandbox works

01
Pick Claude or ChatGPT
Claude chats use this sandbox automatically. In a ChatGPT chat, choose Claude sandbox under Change file processing.
02
Ask with your file
Upload a workbook or document and say what you want done.
03
Get verified results
The sandbox runs the code, and your chat model explains the result and offers the downloads.

MIX AND MATCH

Which chat can use which sandbox

Your chat model and your sandbox are separate choices. ChatGPT can even run its code in Claude’s sandbox.

Chat	ChatGPT sandbox	Claude sandboxThis page	MultipleChat tools
ChatGPT chat	AvailableAutomatic default	AvailableClaude runs the code	Available
Claude chat	Not available	AvailableAutomatic default	Available
Gemini chat	Not available	Not available	AvailableAutomatic default
Grok chat	Not available	Not available	AvailableAutomatic default
Smart mode or several models	Not available	Not available	Available
Free plan	Not available	Not available	AvailableIncluded

Provider sandboxes work in single-model chats for signed-in users on Pro, Smart, Team Pro and Team Smart plans. Everything else uses MultipleChat tools.

YOU’RE IN CONTROL

Switch sandboxes whenever you like.

Leave it on Automatic and MultipleChat picks the native sandbox for your model. Or choose one yourself, for a single answer or as your default.

Open File preferences

In a conversation

Below an answer, open Change file processing.
Pick a sandbox.
Select Run again.

Applies to that chat only. Rerunning uses more allowance.

For every new chat

Open Account → File preferences.
Choose your Default file processing.
Select Save changes.

Syncs across your devices.

THREE WAYS TO WORK WITH FILES

Compare sandboxes

All three let your AI work with files. They differ in which models they support, who runs the code and what is included in your plan.

OpenAI

ChatGPT sandbox

OpenAI’s Code Interpreter for ChatGPT chats.

Works in ChatGPT chats Learn more Anthropic

Claude sandbox

Anthropic’s code execution for Claude and ChatGPT chats.

Works in Claude and ChatGPT chats You are here Built in

MultipleChat tools

Built-in file tools for every model, on every plan.

Works with every model Learn more

KNOW WHAT TO EXPECT

Plans, files and privacy

Plans and usage

Included with Pro, Smart, Team Pro and Team Smart plans. Sandbox work uses your shared AI allowance, depending on the model, task and tools.

Free plans use MultipleChat tools. Compare plans ↗

Files and privacy

Eligible original files go to Anthropic, which runs the sandbox. With ChatGPT, OpenAI receives the results.

Access, size and security checks apply. ZIP uploads are not supported; upload the individual files instead.

Good to know

Web search is off while a provider sandbox is selected. Smart mode and multi-model chats use MultipleChat tools.

Workspaces are temporary. If one resets, saved files are reused, but unsaved working state is lost.

Questions about the Claude sandbox

Can I use Claude’s sandbox while chatting with ChatGPT?

Yes. Select Claude sandbox in a ChatGPT chat. ChatGPT remains the model you talk to, and Claude’s sandbox runs the code. Usage counts for both providers.

Can Claude use the ChatGPT sandbox?

No. The ChatGPT sandbox runs in ChatGPT chats only. Claude chats can use the Claude sandbox or MultipleChat tools.

Do I need to know how to code?

No. Describe what you want in your own words. The AI writes and runs code when that helps, then explains the result in plain language.

How do I switch to a different sandbox?

Below an answer, open Change file processing, choose another option and select Run again. That change applies to the conversation only. To change the default for future chats, open Account → File preferences → Default file processing. A choice you make in a conversation takes priority over your account default.

What does Automatic do?

On eligible plans, ChatGPT chats use the ChatGPT sandbox, Claude chats use the Claude sandbox, and Gemini and Grok use MultipleChat tools. Free plans always use MultipleChat tools. If a sandbox chosen automatically cannot be confirmed, the chat continues with MultipleChat tools rather than stopping.

Which plans include the ChatGPT and Claude sandboxes?

Provider sandboxes are included with Pro, Smart, Team Pro and Team Smart plans when you have AI allowance available. Sandbox work uses your shared allowance; how much depends on the model, the task and the tools used. Rerunning an answer with another sandbox uses more allowance. MultipleChat tools are included on every plan. Compare plans →

Can I use web search at the same time?

Not while the ChatGPT or Claude sandbox is selected. Choose MultipleChat tools for web research. Provider sandboxes also work in single-model chats only; Smart mode and multi-model chats use MultipleChat tools.

What happens to my files?

Eligible original files are sent to the provider that runs the sandbox: OpenAI for the ChatGPT sandbox and Anthropic for the Claude sandbox. File access, size and security checks apply, and every generated file is checked before you get a download. Sandbox workspaces are temporary: if one resets, saved files are reused when available, but variables and unsaved working files are lost.

Will results match the ChatGPT or Claude apps exactly?

MultipleChat connects you to OpenAI’s and Anthropic’s native code-execution tools. Results can still differ because of the model, instructions, available tools and execution limits. It is access to those capabilities, not a copy of every feature in the providers’ own apps. Review important calculations and files before relying on them.

Bring a file.
Leave with a result.

Analyze data, run code and create downloads, with the AI you prefer.

Get started free →See plans ↗

Claude’s sandbox.Now for ChatGPT too.