ChatGPT Alternatives for Lawyers: What to Compare

The best ChatGPT alternative for a lawyer is usually not a different chatbot. It is a plan the firm controls, under business terms that do not train on client data. The main options are ChatGPT Business, Claude Team, Microsoft 365 Copilot, a legal platform such as Harvey, and a private AI workspace built for firms. This guide compares them using each vendor’s own pages, as of October 2026, except where a different month is given.

Why do lawyers look for a ChatGPT alternative?

Most lawyers who search for an alternative are really worried about personal accounts. On OpenAI’s personal plans, such as Free, Plus and Pro, OpenAI’s help center says it may use your content to train its models unless you turn that off.

ABA Formal Opinion 512 says that before you enter information relating to a representation into a generative AI tool, you must assess the risk that people outside the firm could access it. For tools that learn from what you enter, it says you need the client’s informed consent first, and engagement-letter boilerplate is not enough.

A personal account also leaves the firm with no admin control, no business contract and nothing to hand over when someone leaves. Our guide Is ChatGPT safe for client data? covers this in detail.

Is ChatGPT Business good enough for a law firm?

For many small firms, yes, with known gaps. As checked on OpenAI’s pages in October 2026, ChatGPT Business does not train on business data by default, offers SAML single sign-on and a Data Processing Addendum, and has a SOC 2 Type 2 report.

The gaps matter for confidentiality. The Compliance API audit log and data residency are listed for Enterprise, not Business. A Business workspace cannot turn off shared links for everyone. OpenAI does not offer a business associate agreement on Business. Our Business vs Enterprise guide sets these out.

What are the main ChatGPT alternatives for lawyers?

	ChatGPT Business	Claude Team	Microsoft 365 Copilot Business	Harvey	Zrico
Price	$20/seat billed annually, $25 monthly (Standard)	$20/seat billed annually, $25 monthly (Standard)	$21/user billed annually ($18 promotional through the end of 2026), $25.20 monthly	Not published	$39/seat a month, 5-seat minimum
Models	OpenAI	Anthropic	Microsoft-hosted models, plus Anthropic and OpenAI models admins can choose	Anthropic, Google DeepMind and OpenAI	Claude by default; owner can turn on GPT and Gemini
Trains on your data by default	No	No	No	No	No
Admin and audit	SSO; audit log through the Compliance API is Enterprise only	SSO; Anthropic lists audit logs, the Compliance API and custom retention for Enterprise	Microsoft Purview retention, eDiscovery and content search	SAML SSO, audit logs, customer-set retention	Usage and audit report, retention settings
Independent audits	SOC 2 Type 2	SOC 2 Type I and II, ISO 27001, ISO 42001	Lists ISO 27001, ISO 42001, HIPAA, GDPR	SOC 2 Type II, ISO 27001, ISO 27701, ISO 42001	None

ChatGPT Business figures are as checked in October 2026. Copilot Business requires a Microsoft 365 Business Standard or Business Premium plan and covers up to 300 users. Claude’s certifications are Anthropic’s list for its commercial products. For a wider table, see how Zrico compares.

Which alternative fits which firm?

Each tool is a sound choice for a different firm. The fit depends on your software, your clients and your budget.

• ChatGPT Business suits a firm whose people already use ChatGPT and want the same tool under firm control, at a low per-seat price.
• Claude Team suits a firm that prefers Anthropic’s models and wants Anthropic’s own plan. Anthropic’s pricing page says it is for teams of 2 to 150. See Is Claude safe for client data?
• Microsoft 365 Copilot suits a firm that lives in Outlook, Word and Teams. Copilot works across your Microsoft 365 content, so check who can see what in SharePoint first. See Is Microsoft Copilot safe for client data?
• Harvey suits a larger firm or legal department that wants a legal-specific platform and a sales-led rollout. See Harvey alternatives for small law firms.
• A private AI workspace suits a small firm that wants its own separate workspace, legal assistants and partner controls in one place. See What is a private AI workspace?

What should a law firm check before switching?

Check the terms, not the marketing page. These questions come from your duties under the ABA Model Rules and Opinion 512:

1. Training. Does the provider train on prompts, files or answers? Get the answer from its terms.
2. Retention. How long does the provider keep data, and what can your firm set?
3. Access. Who at the vendor can see client data, and in what cases?
4. Location. Where are AI requests processed? Some clients and matters require the US.
5. Control. Can a partner add and remove people, and see who used AI and when? Model Rule 5.3 makes lawyers responsible for supervising nonlawyer assistance, and Opinion 512 discusses how that reaches AI tools and their vendors.
6. Contract. Is there a Data Processing Addendum or similar agreement?

Model Rule 1.6(c) asks lawyers to make reasonable efforts to prevent unauthorized access to client information. A firm-controlled plan with clear answers to these questions is how most firms show that effort.

Does any ChatGPT alternative make AI output reliable?

No. Every model can be wrong, miss recent law or invent citations. Opinion 512 says the degree of independent review depends on the tool and the task, and that a lawyer cannot rely on output without appropriate checking. Treat every answer as a draft from a capable junior who has never met the client.

How Zrico fits

Zrico gives each firm its own private workspace, with its own application and databases. Claude is the default and is processed only in the US. The firm owner can turn on GPT and Gemini, whose processing is not limited to the US. No AI provider trains on prompts, files or answers. Sign-in is invite-only with two-factor authentication, required for admins. Ready-made assistants cover contract review, legal memos, engagement letters, client emails, demand letters, discovery and document summaries, and the owner gets a usage and audit report and retention settings. Zrico has no SOC 2, ISO or HIPAA certification, does not make a firm compliant, and its output must be reviewed by a lawyer.

Sources

• OpenAI Help Center, How your data is used to improve model performance: https://help.openai.com/en/articles/5722486-how-your-data-is-used-to-improve-model-performance
• OpenAI, Business pricing (checked October 15, 2026): https://openai.com/business/pricing/
• OpenAI, Enterprise privacy at OpenAI (updated January 8, 2026): https://openai.com/enterprise-privacy/
• OpenAI Help Center, Managing data, sharing, and privacy in ChatGPT Business: https://help.openai.com/en/articles/8798634-managing-data-sharing-and-privacy-in-chatgpt-business
• OpenAI Help Center, Getting a Business Associate Agreement for the OpenAI API: https://help.openai.com/en/articles/8660679-business-associate-agreement-baa
• Anthropic, Claude pricing: https://claude.com/pricing
• Anthropic Privacy Center, Do you have SOC 2 or HIPAA certifications? (March 16, 2026): https://privacy.claude.com/en/articles/10015870-do-you-have-a-soc-2-or-hipaa-certifications
• Microsoft, Copilot for business: https://www.microsoft.com/en-us/copilot/solutions/business
• Microsoft Learn, Data, privacy, and security for Microsoft Copilot: https://learn.microsoft.com/en-us/microsoft-365/copilot/microsoft-365-copilot-privacy
• Harvey, Security: https://www.harvey.ai/security
• Harvey, Why Harvey is multi-model by design (March 10, 2026): https://www.harvey.ai/blog/why-harvey-is-multi-model-by-design
• ABA Formal Opinion 512, Generative Artificial Intelligence Tools (July 29, 2024): https://www.americanbar.org/content/dam/aba/administrative/professional_responsibility/ethics-opinions/aba-formal-opinion-512.pdf
• ABA Model Rule 1.6, Confidentiality of Information: https://www.americanbar.org/groups/professional_responsibility/publications/model_rules_of_professional_conduct/rule_1_6_confidentiality_of_information/
• ABA Model Rule 5.3, Responsibilities Regarding Nonlawyer Assistance: https://www.americanbar.org/groups/professional_responsibility/publications/model_rules_of_professional_conduct/rule_5_3_responsibilities_regarding_nonlawyer_assistant/

General information, not legal advice. Check the current rules in your jurisdiction and each vendor’s current terms.