01 AI chat on an infinite canvas best for: Thinking in more than one direction at once
Canvas kept one document steady beside a linear chat. NodePad flips that: the conversation itself becomes the canvas. Every message is a node you can fork into branches, reference with @, and merge back into one answer, with Claude, GPT, and Gemini chosen per message. Nothing hidden is added to your context, so the model sees exactly what you put on the path. If you used Canvas mostly to keep drafts and side experiments from overwriting each other, this is that idea taken seriously.
pricing · Free plan on open models; paid plans from $5/month reach every model
02 Google's take on the pinned workspace best for: The closest one-to-one Canvas replacement
Gemini's Canvas mode is the most direct substitute for what OpenAI retired: an interactive pane beside the chat where you draft and refine documents or code, with live previews for web projects. If your Canvas habit was one document, one conversation, and quick revisions, Gemini gives you that today at no cost, and it is the least disruptive switch on this list.
pricing · Free with a Google account; higher limits on paid Gemini plans
03 Chat that builds runnable artifacts best for: Interactive outputs and small apps from a conversation
Claude renders code, documents, and small interactive apps in a side panel as you talk, and its Projects group chats around shared files and instructions. The writing quality is arguably the best in class. The conversations themselves stay linear, so it shines when the artifact is the point and the thinking fits one thread.
pricing · Free tier; paid plans from $20/month
04 Agent-driven work on an infinite canvas best for: Autonomous multi-step AI tasks laid out spatially
Flowith also abandons the linear chat for a canvas of connected nodes, and it is the closest philosophical neighbor to NodePad on this list. Its center of gravity is different: long-running agent runs that decompose a task into many automated steps across dozens of models. Pick it if you want the canvas primarily as a window onto agent automation rather than as a space for your own reasoning.
pricing · Free starter credits; paid plans from about $20/month
05 Canvas-style editing with a European home best for: Canvas-like drafting under EU data preferences
Le Chat added canvas-style document editing alongside web search with citations, a code interpreter, and agent features. The models are Mistral's own, and the company is European, which decides the question for some teams by itself. A pragmatic pick if Canvas-style editing plus data-residency comfort is the brief.
pricing · Generous free tier; Pro around $15/month
06 Visual notes with AI on whiteboards best for: Research notes you arrange and keep for years
Heptabase is a knowledge tool first: cards on infinite whiteboards, built for making sense of what you read, with AI assisting over your notes. Conversations are not the primary object the way they are in a chat tool. If your Canvas use was really note-making in disguise, this is the more honest home for it.
pricing · From about $9/month billed yearly, 7-day trial
07 AI inside the docs you already keep best for: Teams that live in Notion and edit documents together
If your documents already live in Notion, its AI writes, edits, and answers questions right where the work sits, with your workspace as context. You give up the dedicated iterate-with-AI surface, but you skip the copy-paste between your drafting tool and your system of record entirely.
pricing · Included with paid Notion plans; AI features on business tiers
08 Local-first canvas, AI via plugins best for: Full ownership of your files, offline
Obsidian's Canvas gives you an infinite board over local markdown files, and community plugins bolt AI onto it with your own model keys. Assembly is required and the AI is not native, but nothing else here matches it for privacy, longevity, and working offline. The tinkerer's answer.
pricing · Free for personal use; AI depends on plugins and your own API keys