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ChatGPT Atlas vs Dia

A side-by-side comparison of ChatGPT Atlas and Dia, two Assistant tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

ChatGPT Atlas

Assistant

OpenAI's web browser with ChatGPT built in — sidebar, memories, and agent mode.

View ChatGPT Atlas

Dia

Assistant

An AI-native web browser with chat and skills built into the URL bar.

View Dia

At a glance

Feature comparison of ChatGPT Atlas and Dia
AttributeChatGPT AtlasDia
CategoryAssistantAssistant
PricingFREEMIUMFREEMIUM
LicenseProprietaryProprietary
DeploymentLocalLocal
PlatformsmacOSmacOS
Model support (differs)Single model (proprietary)—
Vendor (differs)OpenAIThe Browser Company

The honest brief

ChatGPT Atlas

No browser ties deeper into ChatGPT — your existing account brings memories, chat history, and agent mode to every page without a separate assistant.

  • ChatGPT sidebar on every page
  • Browser memories carry context
  • Agent mode automates web tasks
  • Familiar Chromium foundation
  • macOS only so far
  • Agent mode needs a paid plan
  • Closed source
  • Prompt-injection risks under scrutiny

Dia

From the makers of Arc; AI lives in the address bar aware of your open tabs and history, not a bolted-on chatbot.

  • AI baked into the URL bar
  • Tab- and history-aware context
  • Reusable 'skills'
  • Free tier for light use
  • macOS only
  • Closed source
  • Pro at $20/mo to lift AI limits
  • Young product, evolving feature set
ChatGPT Atlas detailsDia detailsAll Assistant apps