A Directory of AI-Native Law Firms
Why I built The AI Firm Index
I recently launched the AI Firm Index, a directory of AI-native law firms.
I started tracking these firms about 12 months ago and have been hosting the list on a page at this Substack.
Since then, the rate of press releases announcing new launches and funding rounds has increased, so I decided to spin out the list into a new directory.
You can access it at www.aifirmindex.com. Artificial Lawyer was kind enough to share it this week and that led to a lot of interest and outreach.
The biggest question so far has been:
"Is 'AI-native' just a marketing term, or is there something meaningfully different about how these firms practise law?"
It’s a very fair question. At times, it does feel like the .com days when adding a .com to your company name might 10x your valuation.
But I do think there is real innovation happening too. And I think this should be of interest to all of us, whether you are:
Founding an AI-native law firm
Leading a traditional firm and looking at whether/how to adapt
One of a growing number of SaaS companies starting to think about a services play
Instead of focusing on the wording of the definition (that’s worthwhile but I suspect at some point it all becomes moot because every firm is AI-native), I decided to look at the data on how these firms actually price and deliver work.
I’ve shared my initial findings on 33 law firms into a brief report.
I’d welcome ideas for improvement or collaboration on this topic.




Hi Matt,
I just submitted HAA Legal to the AI Firm Index — and wanted to reach out directly.
HAA Legal is the first AI-native patrimonial architecture law firm in Mexico and the Hispanic world. Based in Monterrey, we design corporate, fiduciary, and estate structures using a proprietary AI operating system (SO HAA) built on Claude API — specialized associates, adversarial review protocols, and 20 years of accumulated legal criterion, all integrated into every matter.
We’re a regulated firm under Mexican law (LGSM, LGTOC), bootstrapped, and founder-led. The Founding Partner built the AI system himself — not a tech layer on top of a traditional firm, but practice redesigned from the ground up around AI.
Given your focus on regulated NewMods across global markets, I thought HAA Legal might be a useful addition to the index — particularly as the first Latin American entry.
Happy to share more if useful.
Oscar Hinojosa
Founding Partner, HAA Legal
oscar@haa.mx | haa.mx