Though it was a complete coincidence, we hosted a webinar about AI on the day ChatGPT 5 was released. A lot was happening that day, but like any other prominent tech announcement, a significant number of people (especially those who run small law firms or market them) wanted to know WHAT it could do for them that it couldn’t do before. That’s why we wanted to take a closer look at what this new iteration of A is, what has changed, what issues came up, and how law firms can use it to market themselves more effectively.
What ChatGPT-5 Is and How It Has Improved
ChatGPT‑5 is OpenAI’s latest large language model, and it was released on August 7, 2025. It replaced earlier models like GPT‑4o, GPT‑4.1, and GPT‑4.5. This model uses a system that switches between quick replies and more deliberate “thinking.” Although it is still early, we are seeing significant improvements in its reasoning, coding, and writing capabilities. There’s also something to be said about its accuracy, which is something even the most casual critics have cited when they argue against it. GPT‑5 shows up to 45 % fewer factual errors than GPT‑4o, and even up to 80 % fewer if deep reasoning is enabled
On the developer side, GPT‑5 scores 74.9 % on SWE‑bench Verified and 88 % on Aider polyglot. These are two benchmark tests that measure how well GPT-5 would handle programming tasks. GPT-5 was tested on coding challenges that measured how well it could fix real software problems and work in different programming languages. It solved about three-quarters of the bug fixes correctly and got most of the multi-language tasks right.
It also handles long workflows, tool calls, and follows instructions much better than older versions. It supports more context—up to a million tokens—multimodal input (text, image, audio, video), and allows for integrations with tools like Gmail and Google Calendar.
ChatGPT Isn’t “Perfect,” And Here’s Why
To be fair and impartial, not everyone has been a raving fan. Some critics have said that GPT‑5 feels colder and more business-like compared to GPT‑4o, which felt warmer and friendlier. In response, OpenAI restored GPT‑4o as an opt‑in option for paid users and added user‑selectable personality modes like Auto, Fast, Thinking, and others. If you have gotten comfortable with GPT‑4o, then you haven’t completely lost your ability to use it.
Other issues include continued model errors in emotionally sensitive situations and capacity limits that affected paid users’ access to the GPT‑5 “Thinking” mode. Safety researchers also flagged that GPT‑5 was “jailbroken” too easily in early testing to produce disallowed content, such as instructions for harmful tasks. Some reviewers called the release evolutionary, not revolutionary, noting improvements but expressing concern over whether the upgrade will produce transformational change.
Using It For Legal Marketing (And More)
Law firms can leverage GPT-5 in several ways. It can draft blog posts, social media updates, client alerts, and newsletters with greater clarity and fewer factual errors than earlier versions. Its stronger instruction-following also makes it helpful in generating SEO-friendly content, from topic ideas and article outlines to meta descriptions.
Although we will use it for legal marketing, there are several ways in which it can make your life easier or give you more time. Because GPT-5 supports multimodal input, lawyers can use it to develop ideas for visuals, audio, or video to pair with written content.
For example, a firm might request a simple slide outline for a presentation or an image concept to help illustrate a specific legal concept. Integration with tools such as calendars and email also means it can assist with tasks like drafting event invitations or scheduling reminders directly from existing case notes or briefs.
The improvements in accuracy and safety make editing a less burdensome task, and the more efficient processing can lower costs when working on multiple documents or marketing materials at once. Used consistently, GPT-5 can help firms produce clear, compliant, and timely content while freeing up time for client-focused work.
Get Found on ChatGPT with GEO
As more people use ChatGPT and other AI tools to search for legal services, structure your website and marketing so you show up in those results. Our GEO service improves your visibility across search engines and AI platforms, including ChatGPT. With GPT-5, we can help you create accurate, targeted, and search-friendly content that aligns with AI-driven search algorithms. Contact Spotlight Marketing + Branding today to learn how GEO and GPT-5 can help more people find your firm.
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