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Runable has three modes. Each one is built for a different kind of work. Picking the right one before you start saves time and gets you a better result.

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At a glance

Agent ModeChat ModePlan Mode
Builds thingsYesNoNo
Answers questionsYesYesNo
Uses toolsYesNoYes (read only)
Searches the webYesNoYes
Writes and runs codeYesNoNo
Generates mediaYesNoNo
Rollback and branchingYesNoNo
Preview panelYesNoYes
File supportAll typesImages and PDFs onlyAll types

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Agent Mode

Agent Mode is the default. Every new chat starts here. It is what you use when you want to build something real.
You send a message. The agent reads it, picks the right tools, and starts working. You watch every step happen live in the chat. Commands running. Files being written. Images generating. Websites starting up. Nothing is hidden from you. When the result is ready it appears in the right panel. You keep talking to refine it. Ask for changes, the agent makes them in place. You never leave the window. Use Agent Mode when you want to:
  • Build a website, presentation, report, or any artifact
  • Generate images, videos, or audio
  • Write and run code in your private sandbox
  • Research a topic and produce a finished output from it
  • Execute any multi-step task from start to finish
How to use it: Agent Mode is already on by default. Select your model tier from the selector in the input bar, type your request, and send. The agent takes it from there. If a tool needs your approval before running — like initializing a new website — a prompt appears in the chat. Click Approve or Deny. Everything else runs automatically. You can stop the agent at any time using the stop button. It halts immediately.
You cannot switch between Agent Mode and Chat Mode mid-conversation. The mode is fixed when the chat starts. Start a new chat to switch modes.

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Chat Mode

Chat Mode is for thinking, not building. It is a direct conversation with an AI model. No tools. No sandbox. No output panel.
Use it when you want to talk through an idea, get an explanation, analyze a document, or ask a question without needing an artifact at the end. It is faster and lighter than Agent Mode because nothing is being built. Use Chat Mode when you want to:
  • Ask a question and get a direct answer
  • Analyze a PDF or image you upload
  • Brainstorm ideas before you start building
  • Understand something without needing a finished output
  • Have a focused back and forth conversation with a specific model
How to use it: Click the Chat button in the input bar. You get a full model dropdown — not just tiers — so you can pick the exact model you want. Type your question and send.
Chat Mode cannot execute code, generate images, search the web, or create any artifacts. If you need any of those, start a new chat in Agent Mode.

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Plan Mode

Plan Mode is a toggle inside Agent Mode, not a separate mode. Turn it on when you want the agent to plan before it builds.
With Plan Mode on, the agent does not build anything right away. It researches first. It reads your files, searches the web, checks your memory, and comes back with questions. Once you answer, it writes a full structured plan — what it will build, in what order, with which tools. You review it, adjust it, and approve it. Only then does it start executing. Use Plan Mode when:
  • Your project has more than two or three moving parts
  • You are building something with authentication, payments, or integrations
  • You have tried something similar before and it went wrong halfway through
  • You want to see the full scope before committing to a build
How to use it:
1

Turn on Plan Mode

Click the Plan button in the input bar before sending your message.
2

Send your request

Describe what you want to build as you normally would. The agent starts researching instead of building.
3

Answer the agent's questions

The agent comes back with specific questions about your project. Answer them. The more detail you give, the better the plan.
4

Review the plan

A full structured plan appears in the right panel. Read it. If something is off, tell the agent what to change.
5

Approve and build

When the plan looks right, send a message to approve it.
    Looks good. Go ahead and build it.
The agent switches into execution mode and starts building.
Use Plan Mode any time a project has multiple pieces that need to work together. It is the difference between getting exactly what you wanted and getting something close.

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How to choose

Use Agent Mode. Type what you want and let the agent run. It is the default for a reason.
Use Chat Mode. It is faster, lighter, and focused entirely on conversation.
Use Agent Mode with Plan Mode on. The agent plans before it builds. You approve before anything starts.
Start with Agent Mode. It handles the vast majority of tasks well. Switch to Chat Mode only when you specifically want a conversation with no output.

Branching and Rollback

Go back to any point in a conversation or fork it into a new direction.

Choosing Your AI Model

Understand the difference between Lite, Pro, and Max and when to use each.

File Uploads

What file types you can attach and how the agent uses them.

How the Agent Works

The full picture of what happens when you send a message.