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    ChatGPT vs Harvey

    Harvey is built for legal work and names Finnish and EU legislation and case law among its sources; ChatGPT is a general assistant whose vendor names no Finnish or EU legal source. ChatGPT is easier to try, with a free plan and online purchase up to its Business plan, while Harvey is sold through its sales team without published prices.1–9

    Last verified:
    Last updated:

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

    Our verdict

    Should you choose ChatGPT or Harvey?

    Based on public documentation and published benchmarks: for research on Finnish and EU law, Harvey documents sources that ChatGPT does not, though neither documents Finnish preparatory works. On data handling the plans we score are close: both can store data in the EU, neither uses business data for training by default, and both list SOC 2 Type II, ISO/IEC 27001 and SAML single sign-on; in both, some processing may happen outside the chosen region. ChatGPT publishes prices for its personal and Business plans and has a free plan; Harvey publishes no prices, and its trials are limited evaluations.1–26

    How do ChatGPT and Harvey 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 Harvey side by side
    Fact ChatGPTHarvey
    Plan compared ChatGPT Enterprise Harvey Harvey platform subscription
    Price ChatGPT about US$60 per user per month, minimum 150 users Reported techcrunch.com/2025/02/25/how-much-does-chatgpt… Last verified Harvey A few hundred US dollars per seat per month, with large companies buying at least 100 seats for at least a year Reported fastcompany.com/91429116/harvey-openai-and-the-… Last verified about US$1,200 per user per month Reported sacra.com/c/harvey Last verified Priced per seat, with consumption-based pricing for customers who ask for it Reported legaltechnology.com/harveys-15-5bn-valuation-co… 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 Harvey Harvey AI Corporation The Platform Agreement defines Harvey as Harvey AI Corporation, a Delaware corporation, and all of its affiliates. It names no entity in the EU. Official harvey.ai/legal/platform-agreement 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 Harvey San Francisco, United States Per the company's LEI record. Official register api.gleif.org/api/v1/lei-records/2549005G9FKTMA… 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 Harvey Microsoft Word, Microsoft Outlook, Microsoft 365 Copilot, iManage, NetDocuments, SharePoint, OneDrive, Google Drive, Ironclad, Aderant iTimekeep, PacerPro, Gmail and Octus Per the help centre's integrations topic, which also covers connectors, including MCP connectors, and emailing questions to Harvey. Official help.harvey.ai/topics/integrations 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 Harvey Users can set the web app's interface and preferred response language to French; Harvey said more languages were coming soon. Per Harvey's newsletter of 17 July 2026. Official harvey.ai/blog/the-brief-july-2026 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 Harvey Yes. Harvey's source list names Finnish legislation and case law from Finlex. Per Harvey's source list of 8 September 2025. Official harvey.ai/blog/100-knowledge-sources-available-… 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 Harvey Yes. Harvey's source list names Finnish legislation and case law from Finlex. It does not say which courts are covered. Per Harvey's source list of 8 September 2025. Official harvey.ai/blog/100-knowledge-sources-available-… 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 Harvey Not publicly disclosed The pages checked name Finnish legislation and case law (Finlex) and oikeus.fi, not government proposals. The help centre's detailed source overview needs a login. Pages checked: harvey.ai/blog/100-knowledge-sources-available-…harvey.ai/blog/harvey-expands-global-data-cover…harvey.ai/platform/knowledgeeu.help.harvey.ai/topics/knowledge-sourcesharvey.ai/blog/the-brief-december-2025harvey.ai/blog/the-brief-january-2026help.harvey.ai/release-notes 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 Harvey Not publicly disclosed No links between Finnish statutes, case law or preparatory works are described. Harvey Graph, Harvey's knowledge graph of legal sources, is described for US case law. Pages checked: harvey.ai/blog/100-knowledge-sources-available-…harvey.ai/blog/harvey-expands-global-data-cover…harvey.ai/platform/knowledgeharvey.ai/blog/improving-agent-accuracy-with-ha… 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 Harvey Yes. Harvey's Knowledge page lists EUR-Lex for researching EU law, regulations and Court of Justice decisions. Official harvey.ai/platform/knowledge 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 Harvey Yes. Harvey's source list names Court of Justice (CJEU) case law from Curia, with European Banking Authority rules, and EU case law through EUR-Lex. Per Harvey's source list of 8 September 2025. Official harvey.ai/blog/100-knowledge-sources-available-… 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 Harvey Customer data is stored in data centres in the region named on the customer's current order form. Per the Security Addendum, updated 26 December 2025. Check that your order form names the EU region. Official harvey.ai/legal/security-addendum 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 Harvey Customers select a data processing region, but web browsing and knowledge-source subprocessors, Ask LexisNexis and opt-in Covered AI Services may process data outside it. The same terms say workspace retention settings do not apply to certain features, and that Covered AI Services subprocessors may retain data. Updated 16 September 2026. Official harvey.ai/legal/service-terms 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 Harvey No. Harvey will not train any AI models using customer content or customer data. It may use usage data to develop, improve, support and operate the service. Per the Platform Agreement, updated 9 January 2026. Official harvey.ai/legal/platform-agreement 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 Harvey Customers can delete data at any time and set retention policies. Harvey requires zero data retention from model providers. The security page also says Harvey contractually prohibits model providers from training on customer data. Official harvey.ai/security 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 Harvey Yes. A public Data Processing Addendum is part of the customer terms. It gives at least 30 days' notice of new subprocessors with 15 days to object, return or deletion of personal data within 30 days of termination, and audits where data protection law requires them. Unless the parties agree to process and store personal data only elsewhere, the DPA allows transfers to Harvey in the US. Updated 2 August 2026. Official harvey.ai/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 Harvey SOC 2 Type II, ISO/IEC 27001, ISO/IEC 27701, ISO/IEC 42001:2023, AIUC-1, IRAP and TX-RAMP GDPR, CCPA and EU AI Act appear as compliance badges, not certifications. No certificate dates are shown. Official trust.harvey.ai 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 Harvey Yes, SAML single sign-on. Official harvey.ai/security 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 Harvey Sales-led. Harvey's sales page invites buyers to book a demo and shows no prices, plans or sign-up option. Official harvey.ai/contact-sales 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 Harvey Free trials run as authorised trials under Harvey's Evaluation Terms, which let Harvey limit trial features. The evaluation service excludes features such as custom workflows, third-party integrations and certain research modules. Per the Evaluation Terms, updated 9 January 2026. Official harvey.ai/legal/evaluation-terms-of-service Last verified

    When is ChatGPT or Harvey the better fit?

    Choose ChatGPT if…

    • You want to start small: there is a free plan, and Go, Plus, Pro and Business can be bought online by card.8
    • Your lawyers want an interface in Finnish.27
    • You want one assistant for more than legal work, with plugins for Outlook, SharePoint, Teams and other services.5

    ChatGPT is not for you if…

    • You need research grounded in Finnish or EU legal sources: OpenAI names none for ChatGPT.3–7

    Choose Harvey if…

    • You want research grounded in named Finnish and EU legislation and case law sources.1,2
    • You review large document sets: Vault review tables extract and compare data points across thousands of documents.28
    • You want contracts reviewed against your own standards and live negotiations compared with terms accepted in executed deals.29

    Harvey is not for you if…

    • You want published prices or online sign-up: Harvey's sales page shows neither.9
    • Your team needs to work in Finnish throughout: Harvey does not name it as an interface or response language.30,31

    Neither suits you if…

    • You rely on Finnish government proposals: neither documents them as a source.1–4,6,10–14
    • Every request must be processed in the EU: both document exceptions, such as authentication and routing for ChatGPT, and web browsing and some subprocessors for Harvey.16,23

    What do you get with each?

    Harvey is one platform of legal modules, among them agents, Vault, Knowledge research and Contract Intelligence, used in Word and Outlook and connected to iManage, NetDocuments and SharePoint.34,35 ChatGPT is a general assistant with personal and business plans, and its Word add-in works on every plan.8,36 A firm choosing between them is choosing between a tool built around legal work and one that it adapts to legal work itself.

    How do they handle client data?

    Harvey stores customer data in the region named on the order form, which can be the EU, but some features may process data outside it, and its DPA allows transfers to the US unless the parties agree otherwise.15,21,23,37 OpenAI offers storage in Europe to eligible new Enterprise customers, signs a DPA for Business and Enterprise, and has customers in the EEA contract with OpenAI Ireland.16,18,38,39

    How do ChatGPT and Harvey 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 Harvey by criterion
    Criterion ChatGPTHarvey
    Legal task quality Weight 15% 7/10 Benchmark: Vals Legal Index 8/10 Benchmark: Vals Legal AI Report
    Grounding and verifiability Weight 10% 4/10 Benchmark: Legal Research Bench 4/10 estimate Benchmark: Legal Research Bench
    Finnish quality Weight 10% 9/10 Benchmark: EuroEval Finnish leaderboard 9/10 estimate Benchmark: EuroEval Finnish leaderboard
    Finnish legal sources Weight 15% 0/10 2/10
    EU legal sources Weight 10% 0/10 10/10
    Security and data handling Weight 15% 9/10 9/10
    Workflow fit Weight 10% 10/10 10/10
    Estimated price Weight 15% 9/10 estimate 0/10 estimate
    Overall score Weighted average of the criteria 6.1/10 Includes an estimate 6.2/10 Includes an estimate

    What else do lawyers ask about ChatGPT and Harvey?

    Can I use Harvey from ChatGPT?

    Harvey appears among the legal plugins in OpenAI's plugin directory, and Harvey's own MCP server lets MCP clients query Harvey's legal Q&A, Vault and research sources. Each user signs in to Harvey and reaches only data they can view there.7,32

    Does Harvey run on OpenAI's models?

    Among others: Harvey's subprocessor list names OpenAI alongside Anthropic, Mistral AI, Google Cloud Platform and other AI providers, and users can choose a model for complex matters.31,33

    Can we try them before buying?

    ChatGPT has a free plan for everyone. Harvey's free trials run as authorised trials under its evaluation terms, which leave out features such as custom workflows, third-party integrations and certain research modules.8,26

    Do they work in Finnish?

    ChatGPT's interface is available in Finnish. Harvey names French as an interface and response language, and English (UK), German, Italian and Portuguese for responses, but not Finnish.27,30,31

    What other comparisons are there?

    • Our verdict

      ChatGPT vs Claude for lawyers

      Two general AI assistants compared on Finnish and EU legal sources, client data handling and how each is bought by a law firm.

      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:

    • 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:

    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://www.harvey.ai/blog/100-knowledge-sources-available-in-harvey Official source · For Harvey
    2. 2 https://www.harvey.ai/platform/knowledge Official source · For Harvey
    3. 3 https://learn.chatgpt.com/docs/plugins.md Checked; does not say · For ChatGPT
    4. 4 https://learn.chatgpt.com/docs/web-search.md Checked; does not say · For ChatGPT
    5. 5 https://learn.chatgpt.com/training/walkthroughs/plugins-and-skills Official source · For ChatGPT
    6. 6 https://help.openai.com/en/articles/20001528-astra-for-law Checked; does not say · For ChatGPT
    7. 7 https://openai.com/sitemap.xml/plugins-legal/ Official source · For ChatGPT
    8. 8 https://chatgpt.com/pricing/ Official source · For ChatGPT
    9. 9 https://www.harvey.ai/contact-sales Official source · For Harvey
    10. 10 https://www.harvey.ai/blog/harvey-expands-global-data-coverage Checked; does not say · For Harvey
    11. 11 https://eu.help.harvey.ai/topics/knowledge-sources Checked; does not say · For Harvey
    12. 12 https://www.harvey.ai/blog/the-brief-december-2025 Checked; does not say · For Harvey
    13. 13 https://www.harvey.ai/blog/the-brief-january-2026 Checked; does not say · For Harvey
    14. 14 https://help.harvey.ai/release-notes Checked; does not say · For Harvey
    15. 15 https://www.harvey.ai/legal/security-addendum Official source · For Harvey
    16. 16 https://help.openai.com/en/articles/9903489-data-residency-and-inference-residency-for-chatgpt Official source · For ChatGPT
    17. 17 https://www.harvey.ai/legal/platform-agreement Official source · For Harvey
    18. 18 https://openai.com/enterprise-privacy/ Official source · For ChatGPT
    19. 19 https://trust.harvey.ai/ Official source · For Harvey
    20. 20 https://openai.com/product-compliance-status/ Official source · For ChatGPT
    21. 21 https://www.harvey.ai/security Official source · For Harvey
    22. 22 https://learn.chatgpt.com/docs/pricing.md Official source · For ChatGPT
    23. 23 https://www.harvey.ai/legal/service-terms Official source · For Harvey
    24. 24 https://help.openai.com/en/articles/8792828-chatgpt-business-overview Official source · For ChatGPT
    25. 25 https://techcrunch.com/2025/02/25/how-much-does-chatgpt-cost-everything-you-need-to-know-about-openais-pricing-plans/ Press report · For ChatGPT
    26. 26 https://www.harvey.ai/legal/evaluation-terms-of-service Official source · For Harvey
    27. 27 https://help.openai.com/en/articles/8357869-how-to-change-your-language-setting-in-chatgpt Official source · For ChatGPT
    28. 28 https://www.harvey.ai/platform/vault Official source · For Harvey
    29. 29 https://www.harvey.ai/platform/contract-intelligence Official source · For Harvey
    30. 30 https://www.harvey.ai/blog/the-brief-july-2026 Official source · For Harvey
    31. 31 https://www.harvey.ai/blog/the-brief-october-2026 Official source · For Harvey
    32. 32 https://developers.harvey.ai/guides/harvey_mcp Official source · For Harvey
    33. 33 https://www.harvey.ai/legal/subprocessors Official source · For Harvey
    34. 34 https://www.harvey.ai/platform Official source · For Harvey
    35. 35 https://help.harvey.ai/topics/integrations Official source · For Harvey
    36. 36 https://help.openai.com/en/articles/20001526-chatgpt-for-word Official source · For ChatGPT
    37. 37 https://www.harvey.ai/legal/data-processing-addendum Official source · For Harvey
    38. 38 https://openai.com/policies/eu-terms-of-use/ Official source · For ChatGPT
    39. 39 https://openai.com/policies/services-agreement/ Official source · For ChatGPT
    40. 40 https://apps.apple.com/fi/app/chatgpt/id6448311069 Official source · For ChatGPT
    41. 41 https://api.gleif.org/api/v1/lei-records/2549005G9FKTMALDPE60 Official register · For Harvey
    42. 42 https://www.harvey.ai/blog/improving-agent-accuracy-with-harvey-graph Checked; does not say · For Harvey
    43. 43 https://www.fastcompany.com/91429116/harvey-openai-and-the-race-to-use-ai-to-revolutionize-big-law Press report · For Harvey
    44. 44 https://sacra.com/c/harvey/ Third-party report · For Harvey
    45. 45 https://legaltechnology.com/harveys-15-5bn-valuation-coo-katie-burke-on-what-now-and-what-next/ Press report · For Harvey