All comparisons

Slashspace vs ChatGPT

A ChatGPT canvas alternative that holds the whole project, not one draft.

Slashspace is a ChatGPT canvas alternative for whole projects: draft in notes, branch any answer, compare models side by side, and wire in PDFs, videos and web pages, on a canvas saved to your computer.

What Slashspace does that ChatGPT doesn't

  • Use your Claude plan
  • Use your own API keys
  • Run local and custom models
  • Compare models side by side
  • Chats, notes and sources on one canvas
  • Transcribe TikTok, Instagram, X posts
  • Agent that builds a canvas
  • Canvases saved as local files
Slashspace
$89/year, or $249 one-time lifetime
ChatGPT Plus
Free, or $20/month for Plus
ChatGPT: Has a free plan; paid plans include OpenAI model usage.
Start 3-day trialSee pricing

$89/year after the trial. Or $249 once.

A Slashspace research canvas: a TED talk, a web article and a research paper wired into a chat, with two branch chats off its answer

Why people switch from ChatGPT

  • Canvas left the current models

    OpenAI's release notes say canvas isn't available in GPT-5.5 Instant or Thinking. Paid users kept it on legacy models for a limited time.

  • Side questions stop burying the draft

    Select a sentence and branch. The main thread stays put, and the side question keeps its own history.

  • One project, not one document

    Your brief, sources, drafts and every chat sit on one canvas, with lines showing what feeds what.

  • Pick the model for each chat

    Claude on your Claude plan, GPT on your ChatGPT plan or a key, Gemini or Grok on a key, or a local model through Ollama.

  • Your canvas is a folder you keep

    Each canvas is a folder on your computer, not a conversation inside someone else's account.

Slashspace vs ChatGPT at a glance

FeatureSlashspaceChatGPT
Ways to use AI
Use your Claude planYes: Yes, through the official Claude Code CLINo: OpenAI models only
Use your ChatGPT planYes: Yes, through the official Codex CLIYes: Yes, it's the plan
Use your own API keysYes: OpenAI, Anthropic, Google, xAI, OpenRouter and moreNo: Not offered in ChatGPT
Run local and custom modelsYes: Ollama, LM Studio, vLLM, company gatewaysNo: Not offered
Compare models side by sideYes: A branch per model, same contextNo: Not offered
Writing and canvas
AI edits a document in placeNo: Not built in; write in Text nodes, chats suggest rewritesYes: Writing blocks, with a full-screen editor
Branch chats from any sentenceYes: Select text, ask, and a branch opensPartly: Branch in new chat, from a whole message
Chats, notes and sources on one canvasYes: Every chat, note and source is a nodeNo: Chats in a list; Projects group them
Context controlYes: Wired inputs; summarized or isolated modesPartly: Projects share files and instructions
Sources
PDFs and Office filesYes: Read in full with every messageYes: File uploads in chats and Projects
Transcribe TikTok, Instagram, X postsYes: Plus LinkedIn, Facebook and YouTubeNo: Not documented
Agents and tools
Agent that builds a canvasYes: Orchestrator, from a goal, with sub-agentsNo: Not offered
App connectorsYes: 1,500+ apps and your own MCP serversYes: ChatGPT apps and connectors
Your work
Canvases saved as local filesYes: A folder per canvas on your computerNo: Stored in your OpenAI account
ExportYes: Any canvas as Markdown or JSONYes: Account export as a ZIP (not on Business or Enterprise)
Web and mobile appsNo: Coming soonYes: Web, desktop and mobile
Sharing and collaborationNo: Coming soonYes: Shared chats and projects; Pages on Pro, Business, Enterprise
Price
PriceYes: $89/year, starting with a 3-day trial (card required), or $249 one-time lifetimeYes: Free; Plus $20/month, model usage included
Free planNo: NoYes: ChatGPT Free
Checked on October 8, 2026.
Sources:

Which one should you choose?

  • Choose Slashspace if you...

    • Lost canvas and want a home for a whole project, not one document
    • Want to branch side questions without losing the main thread
    • Want to compare models side by side on the same context
    • Pay for Claude or ChatGPT already, or prefer your own keys or local models
    • Want your canvases as files on your computer

  • Choose ChatGPT if you...

    • Mainly want AI to rewrite one document in place
    • Work on your phone or in a browser
    • Need to share chats, projects or Pages with others today
    • Want a free plan
    • Only use OpenAI models

Keep the whole project in view

Slashspace is a ChatGPT canvas alternative for people whose work was never one document. Canvas gave a single draft a side panel. A Slashspace canvas holds the brief, the sources, the drafts and every chat about them, with lines showing which chat reads what.

  • Text nodes for drafts. Write in Markdown; connect a note to a chat and it reads the latest version with every message (Text node).
  • Write once, reuse everywhere. Wire a style guide or brief into every chat that writes.
  • Critique loop. Ask what to cut, revise the note, ask again.
  • Side view. Open any note or chat beside the canvas to read and edit it.
A Slashspace canvas with an arXiv paper on the four-day work week as a Document node, wired into a chat that answered why the policy survived in four bullets
A source and the chat that reads it, side by side.

Branch the line, not the thread

ChatGPT's Branch in new chat copies the conversation into a separate chat. On a canvas, every branch stays in view next to the chat it came from.

  • Ask about this. Select text in any answer and ask about just that passage.
  • Submit in new branch. ⌘⇧Enter (Ctrl+Shift+Enter on Windows and Linux) sends your message to a new branch and keeps the original intact.
  • Clean context. Sibling branches can't see each other, so one tangent doesn't leak into another.
  • Fair comparisons. Press ⌘B once per model, pick a model in each branch, send the same prompt.
A Slashspace chat reply with one sentence highlighted and a question typed against it, next to a chat branched from an earlier passage
Select a sentence, ask, branch. The main thread stays put.

Any model, per chat

Each chat node has its own model, so one canvas can mix Claude, GPT and a local model.

  • Your plan. Slashspace drives the official Claude Code and Codex CLIs on your computer, signed in with your own account. Usage counts against your Claude or ChatGPT plan.
  • Your keys. OpenAI, Anthropic, Google, Perplexity, xAI, OpenRouter, DeepSeek, Groq and more, at provider prices.
  • Local models. Ollama runs models on your machine, free per message.
  • Optional built-in AI. Hosted models, with Auto picking one for you.
The same question answered side by side by Claude Opus 4.6, GPT-5.5, GPT-OSS 120B and a local Gemma model on one Slashspace canvas
One prompt, several models, answers side by side.

Take your work with you

Canvases live in a folder on your computer, so a project doesn't disappear when a feature does.

  • Plain files. Each canvas is a folder with canvas.json, a Context.md summary and its generated images (where canvases live).
  • Export anytime. Download a canvas as Markdown (the chat text) or JSON (everything) from Export.
  • Honest about the cloud. Documents, web pages and videos you add are uploaded to Slashspace's servers so the AI can read them, and Orchestrator runs in Slashspace's cloud (privacy).
  • Desktop app. Mac, Windows and Linux.

Switching from ChatGPT canvas

  1. Connect your AI: sign in to Claude Code or Codex, add keys, or install Ollama.
  2. Save what you have: copy or download any canvas or writing block you still need. For a full backup, open Settings, then Data controls, then Export data. The link arrives by email and expires 24 hours later.
  3. Bring your drafts in: paste text onto the canvas to make a Text node, or drop a .md or .docx file to make a Document node.
  4. Wire a chat to each draft, then branch for alternatives. Your Project instructions fit in one Text node connected to every chat.

Frequently asked questions

Is ChatGPT canvas discontinued?

OpenAI is phasing it out. OpenAI's release notes say canvas is no longer available in GPT-5.5 Instant or GPT-5.5 Thinking as of May 28, 2026, and that writing and code moved into writing blocks and code blocks in the chat. Paid users could keep using canvas on legacy models for a limited time, until those models are retired.

What's the best ChatGPT canvas alternative?

It depends on what you used canvas for. To have AI rewrite one document in place, ChatGPT's own writing blocks are the direct replacement. To keep drafts, sources and branching chats for a whole project in one place, with any model, Slashspace is built for that.

Can I use my ChatGPT subscription in Slashspace?

Yes. Slashspace drives the official Codex command-line tool on your computer, signed in with your own ChatGPT account, and usage counts against your ChatGPT plan. Claude Code works the same way with a Claude plan. You can also use API keys or local models.

How do I move my canvas documents to Slashspace?

Copy or download the drafts you need first; OpenAI doesn't say whether its data export includes canvas documents. Then paste a draft onto the canvas to make a Text node, or drop a .md or .docx file to make a Document node.

Can Slashspace edit a document in place like ChatGPT canvas?

Not the same way. You write and edit in Text nodes, and connected chats read the latest version and suggest changes. There's no inline AI rewrite of a selected paragraph.

Where does Slashspace store my work?

Canvases are local files on your computer. Documents, web pages and videos you add are uploaded and stored on Slashspace's servers so the AI can read them, and Orchestrator runs in Slashspace's cloud.

Try Slashspace free for 3 days

Every way to use AI, agents that build and act, PDFs, videos, web pages and 1,500+ apps, on one canvas. A card is required: after the trial it is $89/year, and cancelling before it ends costs nothing. Rather pay once? Lifetime is $249 with every update.

Start 3-day trialBuy lifetime for $249

Every payment is refundable within 7 days, no questions asked.