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    ChatGPT vs Claude for lawyers

    For a firm that needs client data kept in Europe, ChatGPT Enterprise is the documented option: OpenAI offers storage and inference in Europe to eligible new Enterprise customers, while Anthropic documents no EU storage or processing option for Claude. Neither vendor names a Finnish or EU legal source of its own, so both need a legal research tool alongside. Claude's Enterprise price is published; ChatGPT Enterprise is priced through sales.1–14

    Last verified:
    Last updated:

    This verdict rests on public documentation and published benchmarks. We do not test ChatGPT or Claude ourselves.

    Our verdict

    Should you choose ChatGPT or Claude?

    Based on public documentation and published benchmarks: both work in Word, connect to iManage and NetDocuments and carry out multi-step tasks, so the main documented differences are data handling, interface languages and price. For eligible new customers, ChatGPT Enterprise offers storage and inference in Europe, does not use business data for training by default, and lists SOC 2 Type 2, ISO/IEC 27001 and 27701 and SAML single sign-on. Claude Enterprise does not use chats for training by default and lists ISO 27001, ISO/IEC 42001 and SOC 2 Type II, but its data is stored in the US with no documented EU option. ChatGPT's interface is available in Finnish; Claude's is not. Claude publishes its Enterprise seat price and usage rates; ChatGPT Enterprise has custom pricing. Neither documents Finnish or EU legal sources, so the quality of their legal answers matters more than usual, and no published benchmark yet measures it on Finnish law.1–29

    How do ChatGPT and Claude compare side by side?

    Each cell shows the fact, its source and the date we last checked it. Where a fact depends on the plan, it is for the plan we score.

    ChatGPT and Claude side by side
    Fact ChatGPTClaude
    Plan compared ChatGPT Enterprise Claude Enterprise
    Price ChatGPT about US$60 per user per month, minimum 150 users Reported techcrunch.com/2025/02/25/how-much-does-chatgpt… Last verified Claude US$20 per user per month, billed annually, minimum 20 users Official claude.com/pricing Last verified
    Company
    Operator ChatGPT OpenAI. Customers located in the EEA or Switzerland contract with OpenAI Ireland Ltd.; customers elsewhere with OpenAI OpCo, LLC. Per OpenAI's Services Agreement (effective 1 January 2026), which covers ChatGPT Business, ChatGPT Enterprise and the API. Official openai.com/policies/services-agreement Last verified Claude Anthropic, PBC. Business customers resident in the EEA, Switzerland or the UK contract with Anthropic Ireland, Limited. Per the Commercial Terms, effective 17 June 2025. Official anthropic.com/legal/commercial-terms Last verified
    Headquarters ChatGPT San Francisco, United States Per the EU trader details OpenAI gives in the Finnish App Store. Official apps.apple.com/fi/app/chatgpt/id6448311069 Last verified Claude San Francisco, United States Official anthropic.com/transparency/voluntary-commitments Last verified
    Product
    Integrations ChatGPT Plugins for SharePoint, Outlook (email and calendar), Microsoft Teams, Google Drive, Gmail, Google Calendar, Dropbox, Slack, Notion, Adobe Acrobat, Zoom, Salesforce, GitHub and other services. Available plugins and actions depend on the plan and workspace settings. Official learn.chatgpt.com/training/walkthroughs/plugins… Last verified Claude Anthropic's legal launch post names connectors for document management (iManage, NetDocuments), deal rooms (Box, Datasite), contracts (Definely, Docusign, Ironclad), e-discovery (Consilio, Everlaw, Relativity), legal AI assistants (Harvey, Solve Intelligence) and legal research, including Thomson Reuters CoCounsel Legal. Launch post dated 12 May 2026. Official claude.com/blog/claude-for-the-legal-industry Last verified
    Interface languages ChatGPT Finnish is among the supported interface languages on the web and in the mobile app. ChatGPT follows the browser or device language, or a setting for signed-in users. Official help.openai.com/en/articles/8357869-how-to-chan… Last verified Claude English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Brazilian Portuguese, Latin American Spanish and Spanish (Spain). Finnish is not among them; Claude converses in the language the user writes in. Help article updated 6 August 2026. Official support.claude.com/en/articles/10769299 Last verified
    Legal sources
    Finnish legislation ChatGPT Not publicly disclosed OpenAI's docs describe web search but no Finnish legal database. Astra for Law's legal index searches US sources. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdlearn.chatgpt.com/training/walkthroughs/plugins…help.openai.com/en/articles/20001528-astra-for-…openai.com/sitemap.xml/plugins-legal Last verified Claude Not publicly disclosed Anthropic's legal page, legal launch post and plugin repository name no Finnish legal source or database. Pages checked: claude.com/solutions/legalclaude.com/blog/claude-for-the-legal-industrygithub.com/anthropics/claude-for-legal Last verified
    Finnish case law ChatGPT Not publicly disclosed No source of Finnish court decisions, such as KKO or KHO rulings, is documented. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdhelp.openai.com/en/articles/20001528-astra-for-…openai.com/sitemap.xml/plugins-legal Last verified Claude Not publicly disclosed No source of Finnish court decisions, such as KKO or KHO rulings, is named. Pages checked: claude.com/solutions/legalclaude.com/blog/claude-for-the-legal-industrygithub.com/anthropics/claude-for-legal Last verified
    Finnish preparatory works ChatGPT Not publicly disclosed No source of Finnish government proposals or other preparatory works is documented. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdhelp.openai.com/en/articles/20001528-astra-for-… Last verified Claude Not publicly disclosed No source of Finnish government proposals or other preparatory works is named. Pages checked: claude.com/solutions/legalclaude.com/blog/claude-for-the-legal-industrygithub.com/anthropics/claude-for-legal Last verified
    Links between Finnish sources ChatGPT Not publicly disclosed No Finnish legal source is documented as part of the tool, so no links between such sources are either. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdhelp.openai.com/en/articles/20001528-astra-for-… Last verified Claude Not publicly disclosed No Finnish legal source is documented as part of the tool, so no links between such sources are either. Pages checked: claude.com/solutions/legalclaude.com/blog/claude-for-the-legal-industrygithub.com/anthropics/claude-for-legal Last verified
    EU legislation ChatGPT Not publicly disclosed OpenAI's own docs name no curated EU legislation source such as EUR-Lex, only web search. Third-party plugins describe their own sources; we have not assessed them. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdhelp.openai.com/en/articles/20001528-astra-for-… Last verified Claude The legal launch post names no built-in EU legislation source. It lists a third-party connector, Legal Data Hunter, described as covering 160+ jurisdictions including EU consolidated law. The coverage claim belongs to the third-party connector; we have not assessed it. Official claude.com/blog/claude-for-the-legal-industry Last verified
    EU case law ChatGPT Not publicly disclosed OpenAI's own docs name no source of CJEU or other EU case law. Pages checked: learn.chatgpt.com/docs/plugins.mdlearn.chatgpt.com/docs/web-search.mdhelp.openai.com/en/articles/20001528-astra-for-… Last verified Claude Not publicly disclosed No built-in source of CJEU or General Court case law is named. The Legal Data Hunter connector's case-law claim names neither the CJEU nor any Finnish court. Pages checked: claude.com/solutions/legalclaude.com/blog/claude-for-the-legal-industrygithub.com/anthropics/claude-for-legal Last verified
    Data handling
    Where data is stored ChatGPT Available to new Enterprise and Edu customers at no extra cost, in Europe (EEA and Switzerland), the UK, the US, Canada, Australia, India, Japan, Singapore, South Korea and the UAE. It covers in-scope customer content; workspace metadata, billing data, logins and data sent to external apps may be stored elsewhere. Official help.openai.com/en/articles/9903489-data-reside… Last verified Claude Data is stored in the US. The article documents no EU storage option. Privacy Center article updated 15 June 2026, covering commercial products such as Claude Enterprise and the API. Official privacy.claude.com/en/articles/7996890-where-ar… Last verified
    Where data is processed ChatGPT Available to eligible Enterprise and Edu customers with data residency in the same region: Europe (EEA and Switzerland), the US or the UAE. It covers GPU inference on in-scope content; processing such as authentication and routing may happen elsewhere. Official help.openai.com/en/articles/9903489-data-reside… Last verified Claude By default, traffic may be routed to selected countries in the US, Europe, Asia and Australia, and data may be processed where Anthropic or its affiliates operate for safety review, product support or incident response. The article documents no EU-only option. Privacy Center article updated 15 June 2026, covering commercial products such as Claude Enterprise and the API. Official privacy.claude.com/en/articles/7996890-where-ar… Last verified
    Training on your data ChatGPT No, by default: OpenAI does not use data from ChatGPT Business, Enterprise or Edu to train its models unless the customer explicitly opts in to share it. Official openai.com/enterprise-privacy Last verified Claude Chats and coding sessions are not used for training by default. The exceptions are the Development Partner Program, explicit feedback such as thumbs up or down, and other explicit opt-ins. Privacy Center article updated 16 March 2026; it covers Claude for Work (Team and Enterprise) and the API. Official privacy.claude.com/en/articles/7996885-how-do-y… Last verified
    Data retention ChatGPT Workspace admins control how long data is kept. Deleted conversations are removed from OpenAI's systems within 30 days, unless OpenAI is legally required to keep them. Official openai.com/enterprise-privacy Last verified Claude Chats and coding sessions are kept in the product; deleted conversations are removed from back-end storage within 30 days. Flagged inputs and outputs may be kept up to 2 years (safety scores up to 7 years) and feedback 5 years. API inputs and outputs are deleted within 30 days unless agreed otherwise. Privacy Center article updated 1 July 2026; it covers Claude for Work and the API, and names a zero data retention agreement as one exception. Official privacy.claude.com/en/articles/7996866-how-long… Last verified
    Data processing agreement ChatGPT Yes. OpenAI signs a Data Processing Addendum with customers for ChatGPT Business and Enterprise, through a DPA form. Official openai.com/enterprise-privacy Last verified Claude Yes. The Data Processing Addendum (effective 24 February 2025) forms part of the Commercial Terms and includes the EU Standard Contractual Clauses (Modules 2 and 3) with UK and Swiss addenda. Anthropic is the customer's processor. No commitment on where data is stored or processed. New subprocessors: reasonable notice, then 15 days to object, or consent is deemed. Official anthropic.com/legal/data-processing-addendum Last verified
    Certifications ChatGPT SOC 2 Type 2, ISO/IEC 27001:2022 and ISO/IEC 27701:2019 Per OpenAI's product compliance status page, updated 4 August 2026. Official openai.com/product-compliance-status Last verified Claude ISO 27001:2022, ISO/IEC 42001:2023, SOC 2 Type I and SOC 2 Type II Covers commercial products such as Claude for Work and the API (help article updated 16 March 2026). A HIPAA-ready configuration with a BAA is also listed. Official support.claude.com/en/articles/10015870-what-ce… Last verified
    Single sign-on (SAML) ChatGPT Yes: SAML SSO and MFA, with workspace user management. Official learn.chatgpt.com/docs/pricing.md Last verified Claude Yes: SAML or OpenID Connect, with set-up guides for Okta, Entra ID, Google, OneLogin, JumpCloud and Duo. Requires domain verification; just-in-time (JIT) provisioning can be turned on. Official support.claude.com/en/articles/13132885-set-up-… Last verified
    Buying
    How to buy ChatGPT Go, Plus, Pro and Business can be bought online by credit card; Business is for teams of 2 to 200. Enterprise has custom pricing through OpenAI's sales team, which offers invoicing. Edu is arranged by contacting OpenAI. Official chatgpt.com/pricing Last verified Claude Team (2 to 150 seats) and self-serve Enterprise have a 'Create plan' option on the pricing page; sales-assisted Enterprise goes through sales. Enterprise is billed annually, minimum 20 seats, with usage at API rates on top of the seat price. Trials, invoicing on net terms and AWS Marketplace purchase are listed for sales-assisted Enterprise only. Official claude.com/pricing Last verified
    Free plan or trial ChatGPT A Free plan is available to everyone. OpenAI's pricing page mentions no free trial of paid plans. Official chatgpt.com/pricing Last verified Claude A Free plan at $0, with usage limits. The pricing page lists trials only under sales-assisted Enterprise. Trial length and terms are not stated. Official claude.com/pricing Last verified

    When is ChatGPT or Claude the better fit?

    Choose ChatGPT if…

    • Your firm needs client data stored in Europe and inference kept there: OpenAI offers both to eligible new Enterprise customers, though authentication and routing may happen elsewhere.1
    • Your lawyers want to work in Finnish: it is one of ChatGPT's interface languages.27
    • You keep documents in iManage or NetDocuments and want to reach them through plugins built by those vendors, with their permissions enforced.16,17

    ChatGPT is not for you if…

    • Your firm wants a published price for the plan that can keep data in Europe: ChatGPT Enterprise has custom pricing through sales.1,14

    Choose Claude if…

    • You want to know the price before you talk to sales: Claude's Enterprise seat price and usage rates are published, billed annually with a minimum number of seats.13,29,30
    • Your team drafts and redlines in Word with tracked changes, or reviews contracts against a playbook: Anthropic documents both as legal workflows, with open-source legal plugins.10,12
    • Your organisation can accept client data stored in the US under Anthropic's Data Processing Addendum with the EU standard contractual clauses.2,3,31

    Claude is not for you if…

    • Your firm must keep client data in the EU: Anthropic documents no EU storage or processing option.2–4
    • Your lawyers want the interface in Finnish: it is not among Claude's interface languages.28

    Neither suits you if…

    • You need answers grounded in Finnish legislation, case law or preparatory works: neither vendor names such a source, so plan for a legal research service as well.5–12
    • You plan to use a personal plan for client work: ChatGPT's personal plans use content for training unless you opt out and come with no DPA, and Claude's consumer terms rule out commercial use.13,14,21,30

    Where is client data kept and processed?

    OpenAI offers eligible new ChatGPT Enterprise and Edu customers storage of in-scope content in Europe, and inference in Europe with it; workspace metadata, logins and data sent to external apps may be stored elsewhere.1 ChatGPT Business and the personal plans are not eligible.1 Anthropic stores Claude Team and Enterprise data in the US, may route traffic to the US, Europe, Asia and Australia, and documents no EU-only option; its Data Processing Addendum covers transfers with the EU standard contractual clauses.2–4,31

    Both search the web and connect to third-party legal tools: OpenAI’s plugin directory lists plugins such as Harvey, Legora, iManage and NetDocuments, and Anthropic names connectors such as Thomson Reuters CoCounsel Legal and Legal Data Hunter.6,9,11,32 Those tools describe their own sources; we do not count them as part of ChatGPT or Claude.

    How do ChatGPT and Claude score on our rubric?

    Both tools are scored on the same rubric. Three criteria rest on published benchmarks, some of them estimates.

    Scores of ChatGPT and Claude by criterion
    Criterion ChatGPTClaude
    Legal task quality Weight 15% 7/10 Benchmark: Vals Legal Index 7/10 Benchmark: Vals Legal Index
    Grounding and verifiability Weight 10% 4/10 Benchmark: Legal Research Bench 6/10 Benchmark: Legal Research Bench
    Finnish quality Weight 10% 9/10 Benchmark: EuroEval Finnish leaderboard 7/10 estimate Benchmark: EuroEval Finnish leaderboard
    Finnish legal sources Weight 15% 0/10 0/10
    EU legal sources Weight 10% 0/10 0/10
    Security and data handling Weight 15% 9/10 8/10
    Workflow fit Weight 10% 10/10 10/10
    Estimated price Weight 15% 9/10 estimate 10/10 estimate
    Overall score Weighted average of the criteria 6.1/10 Includes an estimate 6.1/10 Includes an estimate

    What else do lawyers ask about ChatGPT and Claude?

    Does ChatGPT or Claude use our firm's data to improve its models?

    Not by default on business plans: OpenAI does not use ChatGPT Business, Enterprise or Edu data for training unless the customer opts in, and Anthropic does not use Team or Enterprise chats unless there is an explicit opt-in, such as its Development Partner Program or a user's thumbs up or down feedback. Personal plans of both may use chats for training, subject to a setting.14,21,24,25

    Can either keep client data in the EU?

    ChatGPT can, on Enterprise and Edu: OpenAI offers storage in Europe to eligible new customers, with inference in Europe for those who have it. Anthropic documents no EU storage or processing option for Claude, and Team and Enterprise data is stored in the US.1–4

    Do they know Finnish law?

    Neither vendor documents a Finnish legal source. Both search the web. OpenAI's Astra for Law covers US law, and the Thomson Reuters CoCounsel Legal connector for Claude, a third-party product, covers US law too. No published benchmark yet measures how well they answer Finnish legal questions.5–12,32,33

    Which is cheaper for a law firm?

    We cannot say for an organisation: ChatGPT Enterprise has custom pricing, while Claude Enterprise has a published seat price plus usage at API rates. Both have a free plan for trying them out.13,14,30

    What other comparisons are there?

    • Our verdict

      ChatGPT vs Harvey

      A general AI assistant against a legal AI platform, compared on legal sources, client data handling and how each is bought.

      Last updated:

    • Our verdict

      Edilex AI vs Laki.ai

      Two ways to research Finnish law with AI: a research service of its own, and a connector that brings Finnish legal sources into your own AI assistant.

      Last updated:

    • Our verdict

      Edilex AI vs Legora

      A Finnish legal research add-on against a legal AI platform, compared on Finnish sources, client data handling and how each is bought.

      Last updated:

    • Our verdict

      Harvey vs Legora

      Two legal AI platforms compared on Finnish and EU legal sources, where client data is processed and how each is bought.

      Last updated:

    Where do these facts come from?

    Numbers in the text point to this list. Each fact in the side-by-side table links to its own source, with the date we last checked it.

    1. 1 https://help.openai.com/en/articles/9903489-data-residency-and-inference-residency-for-chatgpt Official source · For ChatGPT
    2. 2 https://www.anthropic.com/legal/privacy Official source · For Claude
    3. 3 https://privacy.claude.com/en/articles/7996890-where-are-your-servers-located-do-you-host-your-models-on-eu-servers Official source · For Claude
    4. 4 https://privacy.claude.com/en/articles/10458704-how-does-anthropic-protect-the-personal-data-of-claude-users Official source · For Claude
    5. 5 https://learn.chatgpt.com/docs/plugins.md Checked; does not say · For ChatGPT
    6. 6 https://learn.chatgpt.com/docs/web-search.md Official source · For ChatGPT
    7. 7 https://learn.chatgpt.com/training/walkthroughs/plugins-and-skills Official source · For ChatGPT
    8. 8 https://help.openai.com/en/articles/20001528-astra-for-law Official source · For ChatGPT
    9. 9 https://openai.com/sitemap.xml/plugins-legal/ Official source · For ChatGPT
    10. 10 https://claude.com/solutions/legal Official source · For Claude
    11. 11 https://claude.com/blog/claude-for-the-legal-industry Official source · For Claude
    12. 12 https://github.com/anthropics/claude-for-legal Official source · For Claude
    13. 13 https://claude.com/pricing Official source · For Claude
    14. 14 https://chatgpt.com/pricing/ Official source · For ChatGPT
    15. 15 https://help.openai.com/en/articles/20001526-chatgpt-for-word Official source · For ChatGPT
    16. 16 https://openai.com/business/plugins/imanage-work/ Official source · For ChatGPT
    17. 17 https://openai.com/business/plugins/netdocuments/ Official source · For ChatGPT
    18. 18 https://learn.chatgpt.com/docs/use-chatgpt.md Official source · For ChatGPT
    19. 19 https://claude.com/blog/collaborate-with-claude-across-excel-powerpoint-word-and-outlook Official source · For Claude
    20. 20 https://claude.com/product/cowork Official source · For Claude
    21. 21 https://openai.com/enterprise-privacy/ Official source · For ChatGPT
    22. 22 https://openai.com/product-compliance-status/ Official source · For ChatGPT
    23. 23 https://learn.chatgpt.com/docs/pricing.md Official source · For ChatGPT
    24. 24 https://privacy.claude.com/en/articles/10023580-is-my-data-used-for-model-training Official source · For Claude
    25. 25 https://privacy.claude.com/en/articles/7996885-how-do-you-use-personal-data-in-model-training Official source · For Claude
    26. 26 https://support.claude.com/en/articles/10015870-what-certifications-has-anthropic-obtained Official source · For Claude
    27. 27 https://help.openai.com/en/articles/8357869-how-to-change-your-language-setting-in-chatgpt Official source · For ChatGPT
    28. 28 https://support.claude.com/en/articles/10769299 Official source · For Claude
    29. 29 https://platform.claude.com/docs/en/about-claude/models/overview Official source · For Claude
    30. 30 https://www.anthropic.com/legal/consumer-terms Official source · For Claude
    31. 31 https://www.anthropic.com/legal/data-processing-addendum Official source · For Claude
    32. 32 https://support.claude.com/en/articles/10684626-enable-and-use-web-search Official source · For Claude
    33. 33 https://github.com/anthropics/claude-for-legal/tree/main/external_plugins/cocounsel-legal Official source · For Claude
    34. 34 https://openai.com/policies/services-agreement/ Official source · For ChatGPT
    35. 35 https://apps.apple.com/fi/app/chatgpt/id6448311069 Official source · For ChatGPT
    36. 36 https://techcrunch.com/2025/02/25/how-much-does-chatgpt-cost-everything-you-need-to-know-about-openais-pricing-plans/ Press report · For ChatGPT
    37. 37 https://www.anthropic.com/legal/commercial-terms Official source · For Claude
    38. 38 https://www.anthropic.com/transparency/voluntary-commitments Official source · For Claude
    39. 39 https://privacy.claude.com/en/articles/7996866-how-long-do-you-store-my-organization-s-data Official source · For Claude
    40. 40 https://support.claude.com/en/articles/13132885-set-up-single-sign-on-sso Official source · For Claude