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AI tools for AEC · Comparison

ChatGPT vs Claude vs Gemini for AEC firms

Short answer

ChatGPT, Claude and Gemini are all capable general AI assistants for drafting, summarising and analysing files. The practical differences for AEC firms are where they fit: Gemini works inside Google Workspace, Claude handles long documents well, and ChatGPT offers broad features including image generation. For project data, use a business plan with clear data terms.

How do they compare?

ChatGPT vs Claude vs Gemini for AEC firms
FeatureChatGPTClaudeGemini
Made byOpenAIAnthropicGoogle
CategoryGeneral AI assistantsGeneral AI assistantsGeneral AI assistants
Best forArchitects, Engineers, Contractors, DevelopersArchitects, Engineers, Contractors, DevelopersArchitects, Engineers, Contractors, Developers
PlatformsWeb, Windows, macOS, iOS, AndroidWeb, Windows, macOS, iOS, AndroidWeb, Android, iOS, macOS
PricingFreemium. Free plan. Paid plans for individuals (Go, Plus, Pro) and for teams (Business, from 2 users, and Enterprise), priced per user per month.Freemium. Free plan. Paid plans for individuals (Pro, Max, Ultra) and for teams (Team, for 2 to 150 people, and Enterprise), priced per user per month.Freemium. Free with a Google account. Paid Google AI plans for individuals (Plus, Pro, Ultra), priced in rupees per month. For businesses, Gemini is included in Google Workspace plans.
Strengths
  • Writing, summarising, file analysis and image generation in one tool.
  • A free plan to start with, plus web, desktop and mobile apps.
  • Projects keep the files and instructions for one job together.
  • Works in Indian English, Hindi and many other languages.
  • Handles long documents and multi-step writing tasks well.
  • Projects keep the files and instructions for one job together.
  • Paid plans include Claude Code for writing and running small automation scripts.
  • Team and Enterprise plans don't use your data for model training by default, according to Anthropic.
  • Built into Gmail, Docs, Sheets and Drive for firms that already use Google Workspace.
  • A free version with a Google account, and individual plans priced in rupees.
  • Analyses images and photos as well as text.
  • Google states that Workspace business data isn't used to train its models.
Limitations
  • It can state wrong facts confidently (hallucination), including code clauses, numbers and references.
  • It does not know your local authority's current bye-laws unless you give it the documents.
  • It cannot open or edit DWG, Revit or other model files; export drawings as PDF or images for it to read.
  • Usage limits and features vary by plan.
  • It can state wrong facts confidently (hallucination), including code clauses, numbers and references.
  • It does not know your local authority's current bye-laws unless you give it the documents.
  • It cannot open or edit DWG, Revit or other model files; export drawings as PDF or images for it to read.
  • Usage limits and features vary by plan.
  • It can state wrong facts confidently (hallucination), including code clauses, numbers and references.
  • It does not know your local authority's current bye-laws unless you give it the documents.
  • It cannot open or edit DWG, Revit or other model files; export drawings as PDF or images for it to read.
  • Features differ between personal Google accounts and Workspace accounts, and by plan.
Your data
  • On the Free, Go, Plus and Pro plans, OpenAI may use your conversations to train its models unless you opt out; its pricing page lists an opt-out for these plans.
  • OpenAI says it does not train its models on Business and Enterprise workspace data by default.
  • Personal data about clients or staff falls under India's DPDP Act, 2023. Agree in your firm's AI usage policy what may be entered, and in which account.
  • On the Free, Pro, Max and Ultra plans, Anthropic may use your chats to train its models unless you opt out in your account's privacy settings.
  • Anthropic's pricing page states that Team and Enterprise plans have no model training on your data by default.
  • Personal data about clients or staff falls under India's DPDP Act, 2023. Agree in your firm's AI usage policy what may be entered, and in which account.
  • With personal Google accounts, Google uses Gemini activity to improve its services, including training AI models, while the Keep Activity setting is on. A subset of chats may be reviewed by people. Turning Keep Activity off stops future chats being used for training.
  • For Google Workspace business accounts, Google states that company data isn't used to train its models or for ads.
  • Personal data about clients or staff falls under India's DPDP Act, 2023. Agree in your firm's AI usage policy what may be entered, and in which account.
CloudBrain's viewA good first AI tool for most AEC firms. Start with drafting, summarising and email work on individual plans; for project and client data, use a Business workspace with a written AI usage policy, and have a qualified person check every output.A strong choice for document-heavy AEC work such as tenders, contracts, specifications and reports. Use a Team plan for project and client data, with a written AI usage policy, and have a qualified person check every output.The natural choice for firms that already run on Google Workspace, because it works where your email and documents are. Use it through Workspace accounts for project and client data, not personal Google accounts, and have a qualified person check every output.

Facts come from each tool’s full listing, which links to the vendor’s own pages. Plans and features change, so check the vendor’s website before you buy.

Which should you choose?

  • Choose ChatGPT if…

    You want one broad assistant for writing, file analysis and images, with business plans for teams.

  • Choose Claude if…

    Your work is document-heavy, such as tenders, contracts and specifications, or you want help writing small automation scripts.

  • Choose Gemini if…

    Your firm already runs on Google Workspace and wants AI inside Gmail, Docs, Sheets and Drive.

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