The ex-Clifford Chance lawyer taking aim at 'fake work'
Jamie Tso built AI tools used by hundreds of lawyers at Clifford Chance before leaving Big Law to launch LegalQuants.
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Jamie Tso taught himself how to build AI tools while working as a funds associate at Clifford Chance, with an internal product eventually being used by around 500 lawyers across 18 offices.
He has since left the firm to build LegalQuants, a global community centred on what he believes is an emerging type of legal professional.
When Jamie Tso was a funds associate at Clifford Chance, emails started arriving in his inbox from lawyers he had never worked with before.
The messages came from as far as New York and Madrid, all asking about an internal AI tool that could remove some of corporate law's most repetitive tasks. The word had spread through the firm's global network, and lawyers wanted to know how they could use it.
Tso wasn't part of the firm's innovation team, nor had he been hired to develop software. He was simply an associate in the firm’s Hong Kong funds practice who had spent his evenings learning how to code.
This was early on, before the widespread roll out of AI tools, and the software quickly spread to around 500 lawyers across 18 Clifford Chance offices.
Tso left Clifford Chance in March this year to build LegalQuants, which he now runs full time, convinced that artificial intelligence will create a new category of lawyer whose expertise is expressed not only through legal advice, but increasingly through software.
He is part of a growing cohort of former Big Law lawyers building AI products, including ex-Latham & Watkins associate Will Chen, whose open-source legal AI platform Mike OSS gained a global following earlier this year.
After hours
Tso never planned to become a software developer. Born and raised in Hong Kong before spending an exchange year at King's College London, he entered private practice without knowing how to write a line of code.
As a trainee, he began experimenting in the evenings, hiring freelance developers through Upwork and working alongside them on small automation projects, using each one to understand how software was built and see whether repetitive legal work could be automated.
Most of those early projects never amounted to much.
“None of them actually materialised. It was just fun side projects," he says. "I just wanted to experiment… to see what it would be like if I could build something that automates repetitive work?"
A breakthrough
A breakthrough came after he discovered Microsoft's Power Automate platform, a no-code service that aids automated workflows.
“At the time, Microsoft’s offering was solid, even better than what Harvey and Legora offered. I don’t think they even had workflows back then,” he says.
One of his first successful tools automated document comparisons, file conversions and signature extraction, removing the need to wait for document processing teams.
Lawyers could simply send documents to the tool and receive the red line output automatically.
"I built that from zero to one," he says. "That was my first success building legal tech software products."
Lawyers he had never met began emailing from offices around the world wanting to use the tool, and eventually came back with suggestions for improvements and requests for new features.
"I remember getting emails from people in New York, Madrid, saying, 'Really impressive tool… here's a couple of recommendations on how it could be better.’ It was really collaborative."
I feel that work that can be automated by AI is fake work.
The experience also reinforced another motivation that had been driving him.
"I do feel people's pain really deeply," he says. "I couldn't stand them suffering… and drowning in that work that I think AI can do better, in a fraction of the time."
Tso has a name for it: “fake work”.
"I feel that work that can be automated by AI is fake work," he says.
The phrase is provocative, but Tso is quick to explain what he means. He believes lawyers continue to spend hours completing tasks that technology could already perform, largely because nobody has had the time, the tools or the skills to automate them.
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Finding his people
The internal success encouraged Tso to start sharing his projects publicly.
As generative AI began reshaping conversations across the legal industry, he started posting demonstrations of legal workflows he had built himself on LinkedIn, where he now has more than 12,000 followers. Some projects recreated elements of products such as Harvey and Spellbook, although he insists that was never really the objective.
"It was never really about replicating those tools," he says. "It was more about building lawyer-specific workflow tools. That was the genesis of the vibe coding movement among lawyers.”
The posts quickly went viral and attracted other lawyers who were experimenting with AI in much the same way.
"I found more like-minded people and started building a community," he says.
Maybe coding is just an extreme form of AI literacy.
Those conversations grew into a WhatsApp group, which evolved into hackathons, open-source projects, a collaboration with Anthropic on its legal plugin and, eventually, founding LegalQuants, a global community of lawyers interested in building software.
For Tso, that distinction matters because he believes the legal industry's AI debate has become too focused on vendors.
"Not every discussion needs to be around vendors and tools, and which is the better tool,” he says.
"Maybe you just have to build the tool that you want. Lawyers themselves should use AI as leverage,” he says. “Maybe coding is just an extreme form of AI literacy.”
Legal quants
Central to Tso's vision is the term "legal quant", which he hopes becomes an industry-wide description rather than simply the name of his organisation, drawing inspiration from the quantitative analysts, or "quants", who transformed modern finance.
"The simple definition is that legal quants are the kind of lawyers that turn their legal judgement into AI systems."
Lawyers have long captured their expertise through precedents, templates and know-how documents. Artificial intelligence, he argues, makes it possible to encode that expertise in software instead.
"The upshot of that is if you can create software that represents your domain expertise, you can deliver it at the speed of software,” he says.
He distinguishes legal quants from legal engineers, who typically focus on improving workflows and operations. Legal quants, he argues, combine legal expertise with engineering, product development and client-facing work.
"They own the full stack. They embody their domain expertise into software and actually know how to build it,” he says.
Leaving Big Law
When Tso resigned from Clifford Chance, the decision was more about conviction than certainty.
"I didn't have a plan," he says. "I did not have any job offers."
He said he received interest from law firms, startups and legal technology companies after his online projects gained attention, but none of the opportunities felt like the right fit.
"I don't want to lose my personal brand," he says.
I didn't have a plan. I did not have any job offers.
Instead, he decided to see whether LegalQuants could become something bigger than an online community. Today, it combines consulting, AI training, recruitment and intelligence products for lawyers trying to keep pace with rapidly evolving technology.
The company also operates an online four-week residency programme pairing lawyers with experienced legal quants and culminating in a demo day with investors and industry AI leaders.
The pace of change means Tso is wary of pretending there is a finished playbook.
"Honestly we haven't figured everything out," he says. "I don't think anyone has, but our motto is always stay at the frontier."
Law Firm | Trainee First Year | Trainee Second Year | Newly Qualified (NQ) |
|---|---|---|---|
| Addleshaw Goddard | £52,000 | £56,000 | £100,000 |
| Akin | £60,000 | £65,000 | £174,418 |
| A&O Shearman | £56,000 | £61,000 | £150,000 |
| Ashurst | £57,000 | £62,000 | £140,000 |
| Baker McKenzie | £56,000 | £61,000 | £150,000 |
| Bird & Bird | £48,500 | £53,500 | £102,000 |
| Bristows | £48,000 | £52,000 | £95,000 |
| Bryan Cave Leighton Paisner | £53,000 | £58,000 | £125,000 |
| Burges Salmon | £49,500 | £51,500 | £76,000 |
| Charles Russell Speechlys | £52,000 | £55,000 | £93,000 |
| Cleary Gottlieb | £62,500 | £67,500 | £164,500 |
| Clifford Chance | £56,000 | £61,000 | £150,000 |
| Clyde & Co | £48,500 | £51,000 | £85,000 |
| CMS | £50,000 | £55,000 | £120,000 |
| Cooley | £55,000 | £60,000 | £157,000 |
| Davis Polk | £65,000 | £70,000 | £180,000 |
| Debevoise | £55,000 | £60,000 | £173,000 |
| Dechert | £55,000 | £61,000 | £165,000 |
| Dentons | £52,000 | £56,000 | £104,000 |
| DLA Piper | £55,000 | £60,000 | £140,000 |
| Eversheds Sutherland | £50,000 | £55,000 | £120,000 |
| Farrer & Co | £48,500 | £51,000 | £89,000 |
| Fieldfisher | £48,500 | £52,000 | £100,000 |
| Freshfields | £56,000 | £61,000 | £150,000 |
| Fried Frank | £55,000 | £60,000 | £175,000 |
| Gibson Dunn | £60,000 | £65,000 | £180,000 |
| Goodwin Procter | £55,000 | £60,000 | £175,000 |
| Gowling WLG | £48,500 | £53,500 | £105,000 |
| Herbert Smith Freehills Kramer | £56,000 | £61,000 | £145,000 |
| HFW | £52,000 | £56,000 | £103,500 |
| Hill Dickinson | £44,000 | £45,000 | £80,000 |
| Hogan Lovells | £56,000 | £61,000 | £145,000 |
| Irwin Mitchell | £43,500 | £45,500 | £78,000 |
| Jones Day | £60,000 | £68,000 | £165,000 |
| K&L Gates | £50,000 | £55,000 | £115,000 |
| Kennedys | £43,000 | £46,000 | £85,000 |
| King & Spalding | £62,000 | £67,000 | £175,000 |
| Kirkland & Ellis | £60,000 | £65,000 | £174,418 |
| Latham & Watkins | £60,000 | £65,000 | £174,418 |
| Linklaters | £56,000 | £61,000 | £150,000 |
| Macfarlanes | £60,000 | £65,000 | £150,000 |
| Mayer Brown | £55,000 | £60,000 | £150,000 |
| McDermott Will & Schulte | £65,000 | £70,000 | £174,418 |
| Milbank | £65,000 | £70,000 | £174,418 |
| Mills & Reeve | £46,800 | £47,000 | £84,000 |
| Mishcon de Reya | £52,500 | £57,500 | £110,000 |
| Norton Rose Fulbright | £56,000 | £61,000 | £140,000 |
| Orrick | £60,000 | £65,000 | £160,000 |
| Osborne Clarke | £55,500 | £57,500 | £97,000 |
| Paul Hastings | £60,000 | £68,000 | £173,000 |
| Paul Weiss | £60,000 | £65,000 | £180,000 |
| Penningtons Manches Cooper | £48,000 | £50,000 | £83,000 |
| Pinsent Masons | £52,000 | £57,000 | £105,000 |
| Quinn Emanuel | n/a | n/a | £189,000 |
| Reed Smith | £55,000 | £60,000 | £135,000 |
| Ropes & Gray | £62,000 | £67,000 | £170,000 |
| RPC | £48,000 | £52,000 | £95,000 |
| Shoosmiths | £45,000 | £47,000 | £105,000 |
| Sidley Austin | £60,000 | £65,000 | £175,000 |
| Simmons & Simmons | £54,000 | £59,000 | £120,000 |
| Simpson Thacher | n/a | n/a | £178,000 |
| Skadden | £58,000 | £63,000 | £177,000 |
| Slaughter and May | £56,000 | £61,000 | £150,000 |
| Squire Patton Boggs | £50,000 | £55,000 | £110,000 |
| Stephenson Harwood | £50,000 | £55,000 | £105,000 |
| Sullivan & Cromwell | £65,000 | £70,000 | £177,000 |
| TLT | £44,000 | £47,500 | £85,000 |
| Travers Smith | £55,000 | £60,000 | £130,000 |
| Trowers & Hamlins | £47,000 | £51,000 | £85,000 |
| Vinson & Elkins | £60,000 | £65,000 | £173,077 |
| Watson Farley & Williams | £51,500 | £56,000 | £107,000 |
| Weightmans | £36,000 | £38,000 | £70,000 |
| Weil | £60,000 | £65,000 | £170,000 |
| White & Case | £62,000 | £67,000 | £175,000 |
| Willkie Farr & Gallagher | £60,000 | £65,000 | £180,000 |
| Winston Taylor | £56,000 | £61,000 | £125,000 |
| Withers | £47,000 | £52,000 | £95,000 |
| Womble Bond Dickinson | £43,000 | £45,000 | £83,000 |
Rank | Law Firm | Revenue | Profit per Equity Partner (PEP) |
|---|---|---|---|
| 1 | DLA Piper* | £3,130,000,000 | £2,500,000 |
| 2 | A&O Shearman | £2,900,000,000 | £2,000,000 |
| 3 | Clifford Chance | £2,400,000,000 | £2,100,000 |
| 4 | Hogan Lovells | £2,320,000,000 | £2,400,000 |
| 5 | Linklaters | £2,320,000,000 | £2,200,000 |
| 6 | Freshfields | £2,250,000,000 | Not disclosed |
| 7 | CMS** | £1,800,000,000 | Not disclosed |
| 8 | Norton Rose Fulbright* | £1,800,000,000 | Not disclosed |
| 9 | HSF Kramer | £1,360,000,000 | £1,400,000 |
| 10 | Ashurst | £1,030,000,000 | £1,390,000 |
| 11 | Clyde & Co | £854,000,000 | Not disclosed |
| 12 | Eversheds Sutherland | £769,000,000 | £1,400,000 |
| 13 | Pinsent Masons | £680,000,000 | £790,000 |
| 14 | Slaughter and May*** | £650,000,000 | Not disclosed |
| 15 | BCLP* | £640,000,000 | £790,000 |
| 16 | Simmons & Simmons | £615,000,000 | £1,120,000 |
| 17 | Bird & Bird** | £580,000,000 | £720,000 |
| 18 | Addleshaw Goddard | £550,000,000 | £1,000,000 |
| 19 | Taylor Wessing | £526,000,000 | £1,100,000 |
| 20 | Osborne Clarke** | £476,000,000 | £800,000 |
| 21 | DWF | £466,000,000 | Not disclosed |
| 22 | Womble Bond Dickinson | £450,000,000 | Not disclosed |
| 23 | Kennedys | £428,000,000 | Not disclosed |
| 24 | Fieldfisher | £385,000,000 | £1,000,000 |
| 25 | Macfarlanes | £371,000,000 | £3,100,000 |
What do City lawyers actually do each day?
For a closer look at the day-to-day of some of the most common types of lawyers working in corporate law firms, explore our lawyer job profiles:
| Firm | London office since | Known for in London |
|---|---|---|
| Akin | 1997 | Restructuring, funds |
| Baker McKenzie | 1961 | Finance, capital markets, TMT |
| Davis Polk | 1972 | Leveraged finance, corporate/M&A |
| Gibson Dunn | 1979 | Private equity, arbitration, energy, resources and infrastructure |
| Goodwin | 2008 | Private equity, funds, life sciences |
| Kirkland & Ellis | 1994 | Private equity, funds, restructuring |
| Latham & Watkins | 1990 | Finance, private equity, capital markets |
| McDermott Will & Schulte | 1998 | Finance, funds, healthcare |
| Milbank | 1979 | Finance, capital markets, energy, resources and infrastructure |
| Paul Hastings | 1997 | Leveraged finance, structured finance, infrastructure |
| Paul Weiss | 2001 | Private equity, leveraged finance |
| Quinn Emanuel | 2008 | Litigation |
| Sidley Austin | 1974 | Leveraged finance, capital markets, corporate/M&A |
| Simpson Thacher | 1978 | Leveraged finance, private equity, funds |
| Skadden | 1988 | Finance, corporate/M&A, arbitration |
| Sullivan & Cromwell | 1972 | Corporate/M&A, restructuring, capital markets |
| Weil | 1996 | Restructuring, private equity, leverage finance |
| White & Case | 1971 | Capital markets, arbitration, energy, resources and infrastructure |
| Law firm | Type | First-year salary |
|---|---|---|
| White & Case | US firm | £32,000 |
| Stephenson Harwood | International | £30,000 |
| A&O Shearman | Magic Circle | £28,000 |
| Charles Russell Speechlys | International | £28,000 |
| Freshfields | Magic Circle | £28,000 |
| Herbert Smith Freehills | Silver Circle | £28,000 |
| Hogan Lovells | International | £28,000 |
| Linklaters | Magic Circle | £28,000 |
| Mishcon de Reya | International | £28,000 |
| Norton Rose Fulbright | International | £28,000 |
Law Firm | Trainee First Year | Trainee Second Year | Newly Qualified (NQ) |
|---|---|---|---|
| A&O Shearman | £56,000 | £61,000 | £150,000 |
| Clifford Chance | £56,000 | £61,000 | £150,000 |
| Freshfields Bruckhaus Deringer | £56,000 | £61,000 | £150,000 |
| Linklaters | £56,000 | £61,000 | £150,000 |
| Slaughter and May | £56,000 | £61,000 | £150,000 |
Law Firm | Trainee First Year | Trainee Second Year | Newly Qualified (NQ) |
|---|---|---|---|
| A&O Shearman | £56,000 | £61,000 | £150,000 |
| Clifford Chance | £56,000 | £61,000 | £150,000 |
| Freshfields Bruckhaus Deringer | £56,000 | £61,000 | £150,000 |
| Linklaters | £56,000 | £61,000 | £150,000 |
| Slaughter and May | £56,000 | £61,000 | £150,000 |
Law Firm | Trainee First Year | Trainee Second Year | Newly Qualified (NQ) |
|---|---|---|---|
| Ashurst | £57,000 | £62,000 | £140,000 |
| Bryan Cave Leighton Paisner | £53,000 | £58,000 | £125,000 |
| Herbert Smith Freehills | £56,000 | £61,000 | £145,000 |
| Macfarlanes | £60,000 | £65,000 | £150,000 |
| Travers Smith | £55,000 | £60,000 | £130,000 |
| Firm | Merger year | Known for in London |
|---|---|---|
| BCLP | 2018 | Real estate, corporate/M&A, litigation |
| DLA Piper | 2005 | Corporate/M&A, real estate, energy, resources and infrastructure |
| Eversheds Sutherland | 2017 | Corporate/M&A, finance |
| Hogan Lovells | 2011 | Litigation, regulation, finance |
| Mayer Brown | 2002 | Finance, capital markets, real estate |
| Norton Rose Fulbright | 2013 | Energy, resources and infrastructure, insurance, finance |
| Reed Smith | 2007 | Shipping, finance, TMT |
| Squire Patton Boggs | 2011 | Corporate/M&A, pensions, TMT |
Law Firm | Trainee First Year | Trainee Second Year | Newly Qualified (NQ) |
|---|---|---|---|
| Ashurst | £57,000 | £62,000 | £140,000 |
| Bryan Cave Leighton Paisner | £53,000 | £58,000 | £125,000 |
| Herbert Smith Freehills Kramer | £56,000 | £61,000 | £145,000 |
| Macfarlanes | £60,000 | £65,000 | £150,000 |
| Travers Smith | £55,000 | £60,000 | £130,000 |
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