Iter

A minimalist frontend for Gen AI Chat models, optimized for rapid prompt iteration.

• 🔒 Privacy first: Credentials are stored in your browser. All requests directly sent to API with no middleman. Absolutely no tracking.
• ⚡ API endpoint and model hot-swap: Switch between different APIs and models without losing any chat progress
• 🦉 Adapts to OS/Browser default theme: Dark theme for happy night owls
• 💅 Markdown parser: Built-in syntax highlight and copy button for code blocks
• 📋 Smart paste: HTML pastes as markdown, images as input, and files as attachments
• 🧭 Artifacts: Live edit and preview code blocks for SVG, HTML, Mermaid, TypeScript, and React
• 💻 Interpreter: Process uploaded files with TypeScript, with access to NPM registry, a virtual File System, and an LLM prompt API.
• 🖱️ Cursor chat: Precisely edit the selected text
• 📸 Vision input: Handle visual inputs with multi-modal models
• 🎙️ Speech input: Use microphone to input text that can be mixed with typed message
• 📋 Document input: Interpret PDF and text files without conversion

Screenshots

Create a runnable program from text

Recreate the UI of Airbnb with a single screenshot

Supported model providers

• OpenAI*
  • ✅ GPT-5
  • ✅ GPT-5-mini
  • ✅ GPT-5-nano
  • ✅ codex-mini
  • ✅ o4-mini
  • ✅ o3-pro
  • ✅ o3
  • ✅ o3-mini
  • ✅ GPT-4.5-preview
  • ✅ GPT-4.1
  • ✅ GPT-4.1-mini
  • ✅ GPT-4.1-nano
  • ✅ GPT-4o
  • ✅ GPT-4o-mini
• Anthropic
  • ✅ Claude Opus 4.1
  • ✅ Claude Opus 4
  • ✅ Claude Sonnet 4
  • ✅ Claude 3.7 Sonnet
  • ✅ Claude 3.5 Sonnet
  • ✅ Claude 3.5 Haiku
• Google Generative AI
  • ✅ Gemini 2.5 Pro
  • ✅ Gemini 2.5 Flash
  • ✅ Gemini 2.5 Flash Preview
  • ✅ Gemini 2.5 Flash Lite
  • ✅ Gemini 2.0 Flash
  • ✅ Gemini 2.0 Flash Lite
  • ✅ Gemini 2.0 Flash Thinking
• xAI**
  • ✅ Grok 4
  • ✅ Grok 3
  • ✅ Grok 3 Fast
  • ✅ Grok 3 Mini
  • ✅ Grok 3 Mini Fast
• OpenRouter
  • All chat models

*See detailed support matrix for Azure OpenAI
**xAI models do not support PDF document

Keyboard shortcuts

Mac users, please use ⌘ instead of Ctrl

Action	Shortcut
Send message	Ctrl + Enter (in any textarea)
Abort action	Escape (when streaming response)
Dictate	Shift + Space (hold to talk)
Open response editor	Enter or double click (when focusing response block)
Open artifact editor	Enter or double click (when focusing artifact block)
Toggle cursor chat	Ctrl + K (in artifact or response editor)
Rerun artifact	Ctrl + Enter (in artifact editor)
Exit editor	Escape (in artifact or response editor)
Select up/down	↑ / ↓
Create backup	Ctrl + S
Restore backup	Ctrl + O
Export	Ctrl + Shift + E
Import	Ctrl + Shift + O

Directives

Directives force the LLM to generate code that performs specific tasks. The code will take effect after manually run in the editor.

Run directive

Include a run block in the user message to force the LLM to generate code and output files.

```run
<describe what the code should do in natural language, you can also include what types of files to output>
```

The run block can take optional directives to expose additional APIs to the generated code

llm: Generate code that can prompt the active LLM model.

```run llm
<describe how the code should use LLM to perform tasks, e.g. summarize, extract, generate content>
```

Edit directive

Include an edit block in the user message to force the LLM to generate code that edits the nearest assistant message. Other messages will be hidden.

```edit
<editorial goals or instructions>
```

Attachments

You can copy/paste or upload files into each message in one of the following formats:

• Embedded: LLM can see the image, PDF, or text content. If using run directive, LLM can write code that accesses the content as a file.
• External: LLM can only see the metadata of the file (name, size, type, etc.). If using run directive, LLM can write code that accesses the content as a file without reading the content.