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Bring your own model

Anthropic, OpenAI, Gemini, DeepSeek, OpenRouter, SiliconFlow, local Ollama, ChatGPT subscription login, or any OpenAI-compatible relay — including keyless (IP-allowlisted) proxies. Switch providers in Settings. We don't proxy, we don't charge per token.

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Import in one click

Already using Claude Code or Codex? Open CoDesign reads existing API-key provider configs, and ChatGPT subscription users can sign in directly from Settings.

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Your laptop is the cloud

Designs, prompts, and settings stay on disk. v0.2 stores design sessions in JSONL and keeps generated sources in real workspace files. No mandatory account, no telemetry by default.

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Twelve design skills, not magic

Twelve built-in design skill modules ship out of the box — dashboards, landing pages, slide decks, pricing pages, chat UIs, data tables, calendars, glassmorphism, editorial typography and more. Drop a SKILL.md into any project to teach the model your own taste.

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AI-tuned sliders

The model emits the parameters worth tweaking — color, spacing, font — and you drag to refine. No round-tripping the LLM for every nudge.

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Instant design switching

Hop between your last five designs with zero delay. Preview iframes stay alive in memory, so there is no reparse, white flash, or reload wait.

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Desktop, tablet, phone

Preview any artifact in a true phone frame or tablet width, side-by-side with the full canvas. See the responsive story before you export.

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Comment, don't retype

Click any element in the preview to drop a pin. Leave a note. The model rewrites only that region — no more re-prompting the whole page to move a button.

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v0.2: Agentic Design

Each design is now a long-running session with a real workspace. The agent can read, edit, run permissioned tools, preview its work, and keep design-system decisions in files.

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DESIGN.md as memory

Brand values and design tokens live in DESIGN.md, not model memory. Bring your own design system, or let the agent write one as the artifact evolves.

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Cost transparency

Token estimate before each generation. Weekly spend in the toolbar. Set a budget, get warned, never get surprised. Coming soon.

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Five exports, real files

HTML (inlined CSS), PDF (via your local Chrome), PPTX, ZIP, and Markdown — all generated on-device. No Canva detour.

How it works

Bring your own route

Use an API key, ChatGPT subscription sign-in, local Ollama, or any OpenAI-compatible endpoint pi-ai speaks. No vendor lock-in.

Type a prompt

Pick one of fifteen built-in demos — landing page, dashboard, pitch slide, pricing page, mobile app, chat UI, calendar, blog article, receipt, portfolio, email, and more — or describe your own. The first design renders in seconds in a sandboxed iframe.

Refine, export, hand off

Inline comments, AI sliders, and local files. Export to HTML, PDF, PPTX, ZIP, or Markdown — all on-device.

Take a closer look

Six moments from the app — from first launch to region-level rewrites.

Comment mode — click any element, drop a pin, the model rewrites only that region — **Comment, don't retype.** Drop pins on the preview; the model rewrites just that region.

AI-emitted tweaks panel — color pickers and RGB inputs — **AI-tuned sliders.** The model emits the parameters worth tweaking. Drag, don't re-prompt.

Live agent panel showing todos and streaming tool calls — **Watch the agent work.** Todos, tool calls, and streamed reasoning — always visible, always interruptible.

Your Designs hub, filled with real generated artifacts — **Every iteration, kept.** Designs are saved locally; v0.2 stores sessions in JSONL plus real workspace files.

Built-in example library — fifteen ready-to-run design briefs — **Fifteen demo briefs.** Landing, dashboard, pricing, pitch deck, chat UI — one click to see Open CoDesign in action.

Add provider menu — Claude Code, Codex, custom, and presets — **Bring your own model.** Import Claude Code / Codex API-key configs, sign in with ChatGPT, or pick any OpenAI-compatible provider.

How it compares

We are not faster than Claude Design. We are different — open, multi-model, and local-first. The open-source alternative for teams that can't afford subscription lock-in or cloud data exposure.

	Open source	Models	Runs locally	Pricing
Open CoDesign	MIT	Any (BYOK / ChatGPT login)	✓	Provider or subscription cost only
Claude Design	✗ Closed	Opus only	✗	Subscription
v0 by Vercel	✗ Closed	Curated	✗	Subscription
Lovable	✗ Closed	Curated	✗	Subscription
Bolt.new	Partial	Curated	✗	Subscription

Trusted by builders

⭐ Star us on GitHub — every star helps more builders find an open alternative.

GitHub

Bug reports, feature requests, and async discussion all happen in Issues. Security issues → SECURITY.md.

Open Issues →

WeChat (中文社群)

Chinese-speaking users chat in our WeChat group — the QR lives in the Chinese landing page. Codes rotate every 7 days; we refresh in-repo.

View QR →

Open CoDesignDesign with intent.