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BrowserOS includes a default AI model you can use right away, but it has strict rate limits. For the best experience, bring your own API keys or run models locally.

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Which Model Should I Use?

ModeWhat worksRecommendation
Chat ModeAny model, including localOllama or Gemini Flash
Agent ModeCloud models onlyClaude Opus 4.5
Local LLMs aren’t powerful for most agentic tasks yet. They’re great for Chat — asking questions about a page, summarizing, etc. But agent tasks need strong reasoning to click the right elements and handle multi-step workflows. Use Claude Opus 4.5 or Sonnet 4.5 for agents.

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Cloud Providers

Connect to powerful AI models using your API keys. Your keys stay on your machine — requests go directly to the provider.
Gemini Flash is fast and free. Google gives you 20 requests per minute at no cost.Get your API key:
  1. Go to aistudio.google.com
  2. Click Get API key in the sidebar
  3. Click Create API key and copy it Get Gemini API key
Add to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the Gemini card
  3. Set Model ID to gemini-2.5-flash-preview-05-20
  4. Paste your API key
  5. Check Supports Images, set Context Window to 1000000
  6. Click Save Gemini config
Claude Opus 4.5 gives the best results for Agent Mode.Get your API key:
  1. Go to console.anthropic.com
  2. Click API keys in the sidebar
  3. Click Create Key and copy it Get Claude API key
Add to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the Anthropic card
  3. Set Model ID to claude-opus-4-5-20250514
  4. Paste your API key
  5. Check Supports Images, set Context Window to 200000
  6. Click Save Claude config
GPT-4.1 is solid for both chat and agent tasks.Get your API key:
  1. Go to platform.openai.com
  2. Click settings icon → API keys
  3. Click Create new secret key and copy it Get OpenAI API key
Add to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the OpenAI card
  3. Set Model ID to gpt-4.1
  4. Paste your API key
  5. Check Supports Images, set Context Window to 128000
  6. Click Save OpenAI config
Access 500+ models through one API.Get your API key:
  1. Go to openrouter.ai and sign up
  2. Copy your API key from the homepage
Pick a model: Go to openrouter.ai/models and copy the model ID you want (e.g., anthropic/claude-opus-4.5).OpenRouter modelsAdd to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the OpenRouter card
  3. Paste the model ID and your API key
  4. Set Context Window based on the model
  5. Click Save OpenRouter config

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Local Models

Run AI completely offline. Local models are free, private, and your data never leaves your machine. Perfect for Chat Mode with sensitive data.
The easiest way to run models locally.Setup:
  1. Download from ollama.com
  2. Pull a model: 
    ollama pull llama3.2
  3. Start Ollama: 
    ollama serve
    Ollama running
Add to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the Ollama card
  3. Set Model ID to llama3.2
  4. Click Save Ollama in BrowserOS
Recommended models: llama3.2, qwen3:8b, mistral
Nice GUI if you don’t want to use the terminal.Setup:
  1. Download from lmstudio.ai
  2. Open LM Studio → Developer tab → load a model
  3. It runs a server at http://localhost:1234/v1/ LM Studio
Add to BrowserOS:
  1. Go to chrome://browseros/settings
  2. Click USE on the OpenAI Compatible card
  3. Set Base URL to http://localhost:1234/v1/
  4. Set Model ID to the model you loaded
  5. Set Context Window to match your LM Studio config
  6. Click Save LM Studio in BrowserOS

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Switching Between Models

Use the model switcher in the Assistant panel to change providers anytime. The default provider is highlighted. Model switcher
Use local models for sensitive work data. Switch to Claude for agent tasks that need complex reasoning.