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ChatGPT vs Dia

Features, pricing, ratings, and pros and cons, side by side.

ChatGPT logo

ChatGPT

OpenAI's AI assistant for writing, research, coding, image generation and voice chat

4.0(1 review)Freemium
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Verdict

ChatGPT and Dia are both AI Assistants tools. ChatGPT scores higher in FinderAtlas's editorial review (8.9 vs 7.8 out of 10). Both have a free plan or trial. Only ChatGPT is available on Web, iOS and Android.

Best overall

ChatGPT

  • Students
  • Writers
  • Software Developers
  • Researchers

Choose ChatGPT if

  • You want a tool built for everyday questions, drafting and editing text, summarizing documents, coding help, data analysis and image generation in one assistant.
  • One assistant covers text, voice, images, file analysis, search and coding.
  • Free tier lets users try the service without a card.

Choose Dia if

  • You want a tool built for asking questions across tabs and connected work apps, summarizing pages and meetings, and organizing many open tabs.
  • Free to download, with a $20 per month Pro plan rather than a mandatory subscription.
  • AI chat can use content from open tabs and connected work apps.
Best for beginners
ChatGPT
Best for business
ChatGPT

Features

18 features compared.

  • Chat with web search
    ChatGPT
    Available
    Dia
    Not available
  • Voice mode
    ChatGPT
    Available
    Dia
    Not available
  • Image generation
    ChatGPT
    Available
    Dia
    Not available
  • File and image analysis
    ChatGPT
    Available
    Dia
    Not available
  • Projects
    ChatGPT
    Available
    Dia
    Not available
  • ChatGPT agent
    ChatGPT
    Available
    Dia
    Not available
  • Codex
    ChatGPT
    Available
    Dia
    Not available
  • Connectors and apps
    ChatGPT
    Available
    Dia
    Not available
  • Chat with your tabs
    ChatGPT
    Not available
    Dia
    Available
  • Connected apps
    ChatGPT
    Not available
    Dia
    Available
  • Skills
    ChatGPT
    Not available
    Dia
    Available
  • Morning Brief
    ChatGPT
    Not available
    Dia
    Available
  • Decks and reports
    ChatGPT
    Not available
    Dia
    Available
  • Live Work
    ChatGPT
    Not available
    Dia
    Available
  • Splits and organized tabs
    ChatGPT
    Not available
    Dia
    Available
  • Profiles
    ChatGPT
    Not available
    Dia
    Available
  • Privacy controls
    ChatGPT
    Not available
    Dia
    Available
  • Dia for Work
    ChatGPT
    Not available
    Dia
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    ChatGPT
    Freemium
    Dia
    Freemium
  • Free plan
    ChatGPT
    Yes
    Dia
    Yes
  • Starting price
    ChatGPT
    $0
    Dia
    $0
  • Plans
    ChatGPT
    8 plans
    Dia
    2 plans

ChatGPT plans

  • Free

    $0

    Limited access to OpenAI's models for everyday use

    • Limited messages
    • Limited file uploads
    • Limited image generation
    • May show ads in some regions

  • Go

    $8/month

    Low-cost plan with more usage than Free

    • More messages than Free
    • More uploads and image generation
    • May show ads

  • Plus

    Most popular

    $20/month

    For individuals who want more capable models and higher limits

    • Access to more advanced models
    • Projects
    • Expanded Codex
    • Higher limits for research and voice

  • Pro 100

    $100/month

    High-volume use for research and coding

    • About 5x Plus usage
    • Everything in Plus

  • Pro 200

    $200/month

    Higher usage than Pro 100

    • About 20x Plus usage
    • Everything in Plus

  • Pro 500

    $500/month

    Highest usage tier

    • Highest usage limits
    • Ultrafast model variants
    • Everything in Plus

  • Business

    $25/user/mo

    For small teams, with a two-seat minimum

    • Shared workspace
    • Admin controls
    • Business data not used for training by default

  • Enterprise

    Custom/user/mo

    For large organizations, priced by contract

    • Single sign-on
    • Admin and security controls
    • Dedicated support

Dia plans

  • Free

    $0

    Free download with capped AI usage

    • Full browser
    • AI chat with tab context
    • Skills (limited)
    • Sync

  • Pro

    Most popular

    $20/month

    Individuals who use AI heavily

    • Expanded AI chat and Skills usage
    • fuller personalized memory

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

ChatGPT
8.9overall
Dia
7.8overall

  • General Reasoning & Logic

    ChatGPT
    9.0
    Dia
    Not rated

  • Conversational Fluency

    ChatGPT
    9.2
    Dia
    Not rated

  • Coding & Data Analysis

    ChatGPT
    8.8
    Dia
    Not rated

  • Multimodal Processing

    ChatGPT
    9.0
    Dia
    Not rated

  • Ecosystem & Integrations

    ChatGPT
    8.7
    Dia
    Not rated

  • Ease of Use

    ChatGPT
    Not rated
    Dia
    8.5

  • Feature Depth

    ChatGPT
    Not rated
    Dia
    8.0

  • Value for Money

    ChatGPT
    Not rated
    Dia
    7.5

  • Performance & Speed

    ChatGPT
    Not rated
    Dia
    7.8

  • Documentation & Support

    ChatGPT
    Not rated
    Dia
    7.0

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

ChatGPT

Pros

  • One assistant covers text, voice, images, file analysis, search and coding
  • Free tier lets users try the service without a card
  • Apps for web, iOS, Android, macOS and Windows with synced history
  • Large ecosystem of connectors, projects and agent features
  • Plans range from $8 to $500 per month, so users can match spend to usage

Cons

  • Free and Go usage limits are low and may include ads
  • Pricing and model lineup change often, which makes limits hard to compare over time
  • Answers can be wrong and need checking, especially for facts and citations
  • The top Pro tiers cost $100 to $500 per month

Dia

Pros

  • Free to download, with a $20 per month Pro plan rather than a mandatory subscription.
  • AI chat can use content from open tabs and connected work apps.
  • Frequent releases: Mac v1.52.0 and v1.53.0 shipped in October 2026.
  • Separate profiles keep work and personal tabs and AI context apart.
  • Dia for Work provides SAML SSO, MDM policies and a SOC 2 Type II examination.

Cons

  • Desktop only; no publicly released iOS or Android app.
  • Windows version is new (v1.0 on October 6, 2026) and trails the Mac version.
  • Free-tier AI usage limits are not published, and the site has no public pricing page.
  • Several workflow features depend on connected work apps and a work-focused setup.

Platforms

  • Web
    ChatGPT
    Supported
    Dia
    Not supported
  • Windows
    ChatGPT
    Supported
    Dia
    Supported
  • macOS
    ChatGPT
    Supported
    Dia
    Supported
  • iOS
    ChatGPT
    Supported
    Dia
    Not supported
  • Android
    ChatGPT
    Supported
    Dia
    Not supported
  • API
    ChatGPT
    Not supported
    Dia
    Not supported
  • Browser Extension
    ChatGPT
    Not supported
    Dia
    Not supported

Integrations

ChatGPT

2 integrations
  • Gmail
  • MCP connectors

Dia

8 integrations
  • Google Workspace
  • Slack
  • Notion
  • Microsoft Teams
  • GitHub
  • Atlassian
  • Okta
  • Microsoft Entra ID

Company

  • Company
    ChatGPT
    OpenAI
    Dia
    The Browser Company of New York
  • Founded
    ChatGPT
    2015
    Dia
    2019
  • Headquarters
    ChatGPT
    San Francisco, CA
    Dia
    New York, NY
  • Listing
    ChatGPT
    Claimed
    Dia
    Claimed

Frequently asked questions

Is ChatGPT better than Dia?

It depends on your workflow. ChatGPT is built for everyday questions, drafting and editing text, summarizing documents, coding help, data analysis and image generation in one assistant. Dia is built for asking questions across tabs and connected work apps, summarizing pages and meetings, and organizing many open tabs.

What are the key feature differences between ChatGPT and Dia?

ChatGPT: OpenAI's AI assistant for writing, research, coding, image generation and voice chat. Dia: An AI-native web browser that answers questions across your tabs and work apps. ChatGPT is rated 4.0/5 from 1 user review.

Does ChatGPT or Dia have a free plan?

Yes, both do. ChatGPT is freemium and Dia is freemium, and each has a free plan or trial.

Which is cheaper, ChatGPT or Dia?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.