Human taste. Machine stamina.

What each AI edit costs

1 credit is $0.0006. Measured on production from Bike4Mind's credit ledger; the dearest and cheapest measured edits give the plans' "about 50–130 AI edits per 10,000 credits". Other models show the estimate PaintBox reserves before the job runs; you're charged what it really costs.

What works today

Files and limits

Opens

PNG, JPEG, WebP, GIF (its first frame), SVG, PSD and PSB, and PaintBox archives (.icv).

Exports

PNG, JPEG, WebP, SVG, PSD and PDF, a sprite sheet with its JSON atlas, or a zip of many sizes at once with File > Export > Bundle.

Canvas size

Up to 16,384 pixels on a side and 67 megapixels in all (8,192 x 8,192). A bigger PNG, JPEG or WebP is refused; a PSD or PSB up to 32,768 pixels on a side and 134 megapixels opens scaled down to fit.

File size

PaintBox sets no file-size limit on opening a file in your browser; the canvas limits and your device’s memory are what count. A file sent to PaintBox’s servers (a backup, an AI job’s picture, an agent’s upload) can be up to 64 MB.

How batch review works

Where your AI's edits land, and what Accept and Reject do.

1. Your AI finishes and its edits land as a proposal in the Conversation panel of the document it worked on, within seconds.
2. Each proposal says who filed it and lists any paid image job it would start, with the model and an estimated price.
3. Accept applies the edits. A paid job starts only if you also tick its box; unticked, Accept applies the edits only.
4. Reject drops the proposal: your image does not change and no paid job runs.
5. A headless batch over scratch documents is different: it applies without review, and you check the results after.
6. One inbox for proposals across all your documentsComing soon

Built for studios that blend craft and scale

The person keeps the parts that need taste and touch. The repetitive work becomes a script that any agent can run, the same way every time, at full fidelity.

How PaintBox compares

What you get to start, side by side.

US list prices, November 2026. Adobe's agent, MCP and voice features checked November 5, 2026. Photopea facts are from photopea.com and photopea.com/api, checked November 12, 2026. "Not stated" means its site does not say, not that the answer is no. "Not checked" means we did not look.

Photopea is free, mature and runs in your browser; its site says files never leave your device, it opens and saves PSD files as its main format, and it advertises one-click background removal and text-described replacement. If you want a capable free editor, it is a strong choice. Where PaintBox differs is the proposal workflow: an AI or agent edits the document and you accept or reject each change, with history and undo. The pages we read on photopea.com do not describe one.

Pricing for agents

{
  "editor": {
    "usd_per_month": 0,
    "account_required": false
  },
  "plans": [
    {
      "id": "free",
      "usd_per_month": 0,
      "status": "available",
      "storage": "100 MB"
    },
    {
      "id": "paintbox",
      "usd_per_month": 10,
      "status": "coming_soon",
      "storage": "10 GB"
    },
    {
      "id": "bike4mind-pro",
      "usd_per_month": 30,
      "status": "available",
      "storage": "100 GB"
    },
    {
      "id": "team",
      "usd_per_month": 100,
      "status": "available",
      "storage": "400 GB"
    }
  ],
  "agent_spend": "proposal or daily cap, human approves",
  "details": "/how-ai-works"
}

Questions

Do I need an account?

Not to start. The core tools work right away. A free account unlocks every tool, plus cloud storage, sharing, voice, terminal and agent control, and free AI credits when you verify your email.

What is Bike4Mind?

The AI platform PaintBox is built on. One account works in PaintBox and across Bike4Mind.

What can I do together on the $10 plan?

Invite people, and their agents, into a live document. Everyone's changes are on the same canvas, with history.Coming soon

Is connecting my AI free? What does $10 add?

Free while you watch, paid when it runs without you. Connecting Claude, ChatGPT or your own script over MCP is free on every plan: it proposes edits in the document you have open, and you approve each one live. Hand-tool edits cost 0 credits. The $10 plan covers work that runs without you: headless batch runs with no browser open, several agents at once and saved recipes work today; long-lived API keys for scripts and CI, away runs, standing approvals and agents handing work to each other are coming. Free keeps a taste: batch up to 10 files a run and 3 away runs a month.

Do you have team or per-seat plans?

Yes. Team is a Bike4Mind plan that includes PaintBox: $100 a month for up to 4 people, with 50,000 AI credits per seat each month (200,000 for 4), shared by the team. Add seats as you grow, up to 100. Team admin and billing are in Bike4Mind.

Can I cancel?

Anytime, from your account. No annual contract, no fee.

I already pay for Bike4Mind.

PaintBox is included in your plan. Sign in and you have it.

Who owns what I make?

You do. Files you keep local never leave your machine.