GPT-5.2 for Law Firms: What It Was and What to Use Now

GPT-5.2 was a version of OpenAI's ChatGPT model. OpenAI retired it from ChatGPT on June 12, 2026, and moved existing conversations to the matching GPT-5.5 model, which is now the current flagship.

This page exists because some firms still search for GPT-5.2. The short answer is that it is no longer available in ChatGPT, so you should not build a workflow on it. Use OpenAI's current model instead.

For a law firm, the model version matters less than how you protect client confidentiality. This guide explains what GPT-5.2 was, what replaced it, and the confidentiality steps that apply to whatever model you use.

GPT-5.2 Has Been Retired From ChatGPT

OpenAI removed GPT-5.2 Instant, Thinking, and Pro from ChatGPT on June 12, 2026. Existing conversations were moved to the matching GPT-5.5 model: Instant to Instant, Thinking to Thinking, and Pro to Pro.

For everyday users, nothing was required — conversations simply continued on the newer model. For anyone with tuned prompts or a workflow built on GPT-5.2, a forced migration is a real event, because a new model can behave differently.

The practical takeaway for firms: do not start a new project on GPT-5.2. It is not available to select in ChatGPT anymore. Plan around OpenAI's current model instead.

What GPT-5.2 Was

GPT-5.2 was part of OpenAI's GPT-5 family, offered in ChatGPT as Instant, Thinking, and Pro tiers. Like other ChatGPT models, it could draft text, summarize documents, and answer questions.

It was a general-purpose model, not a legal product. It had no special legal training and, like any large language model, could produce wrong or outdated information.

Because it has been replaced, its exact behavior is now mostly of historical interest. What carries forward is the lesson that AI models change often, and your firm's setup should not depend on any single version.

What Law Firms Should Use Now

ChatGPT now runs on OpenAI's GPT-5.5 family, which is the model you should evaluate instead of GPT-5.2. OpenAI continues to update its models, so check its current release notes when you plan a project.

When you move from a retired model to a current one, do not assume the new model behaves the same way. If you have prompts or a workflow that worked before, re-test them on the current model before relying on the output.

Choose a model based on whether you can use it within your confidentiality duties, covered in the next section, rather than on the version number alone.

• Evaluate OpenAI's current GPT-5.5 family, not the retired GPT-5.2
• Check OpenAI's current release notes when planning a project
• Re-test existing prompts on the current model before relying on them
• Pick a model based on your confidentiality duties, not the version
• Avoid building any new workflow on a retired model

Confidentiality Guidance That Applies to Any Model

Your duty of confidentiality covers most information relating to a client matter, not just privileged communications. Sending that information to an outside AI tool can put the duty at risk if you have not controlled how the data is handled. This is true no matter which model you use.

For client matters, use an enterprise or API option with data controls rather than a consumer chatbot. Confirm the data-retention settings, check that your engagement letters and bar rules allow the tool, and get client consent where required.

Treat AI output as a draft from a junior staffer: useful, but reviewed and approved by a lawyer before it reaches a client. The model can be wrong or out of date and does not understand your matter.

• The duty of confidentiality covers most client-matter information
• Use an enterprise or API option with data controls, not a consumer app
• Confirm data-retention settings before entering client information
• Check your engagement letters and bar rules, and get consent where required
• Require lawyer review of all output before it leaves the firm

A Safe Rollout Plan for a Firm

Start with a usage policy, not a tool. Decide which matters and data types are allowed, who can use AI, and how output is reviewed before it leaves the firm.

Run no-client-data tasks first while you set up the right account type and confirm data controls. Move confidential work onto the tool only once those controls and your ethics review are done.

Layer3 Labs helps firms pick a current, supported model, configure the right data controls, and write a usage policy that lines up with your confidentiality duties — so you are not relying on a model that may be retired tomorrow.

• Write a usage policy before client data is involved
• Start with research and template work that uses no client data
• Set up an enterprise or API option and confirm data controls
• Require lawyer review of all output before it leaves the firm
• Choose a current, supported model rather than a retired one