For the past two years, the AI conversation has been dominated by general-purpose models and horizontal tools. Everyone assumed that whoever builds the smartest LLM wins.
But professional work doesn’t work that way.
When a lawyer needs to draft a court-ready brief, when a tax professional needs to navigate multi-jurisdictional compliance, when an auditor needs to assess risk across thousands of transactions—they don’t need the cleverest chatbot. They need AI that understands their work, their standards, and their accountability.
That’s what we’ve built. And the market is responding.
One million professionals have chosen CoCounsel. Not for pilots. Not for experiments. As core infrastructure for how they work. We serve leading enterprises across legal, risk, compliance, tax, accounting, audit and global trade in 107 countries and territories.
While competitors are showcasing demos, we’re delivering deployments. While startups are raising capital, we’re generating revenue. While others are figuring out trust, we’ve already earned it.
The Four Pillars of Professional AI—And Why We Lead
Thomson Reuters has been building technology and using AI for decades. But what we’ve done with generative AI over the past two years puts us in a category of our own.
Professional-grade AI requires four essential components working together. Thomson Reuters has all four at scale:
We have the technology. We work with every leading AI lab—Anthropic, OpenAI, Microsoft, AWS, Google—and we’re developing our own AI model built specifically for professional work. We’re not dependent on a single vendor or locked into one approach. We can use the best technology for each specific workflow.
We have the content. Decades of curated, authoritative professional content that can’t be replicated. Not web-scraped data—the actual sources professionals stake their reputations on.
We have the expertise. 4,500+ domain experts who understand what “good” looks like in legal, tax, and compliance work. They define quality standards, validate outputs, and ensure our AI meets professional requirements.
We have the tools. CoCounsel integrates directly into the professional workflows and platforms our customers already use—from Westlaw and Checkpoint to Microsoft 365. Our AI doesn’t sit outside the work; it becomes part of the work.
These four components working together let us build AI capabilities that others simply can’t.
Westlaw Deep Research on CoCounsel Legal can analyze thousands of documents and synthesize complex legal findings because we combine frontier AI models with our authoritative content library and domain expertise to ensure accuracy. Ready to Review on CoCounsel Tax and Audit can prepare complete 1040 tax returns—not suggestions or drafts, but finished, filed returns that meet IRS standards—because our tools integrate directly into professional workflows with the quality standards our experts define.
Having one or two of these components means you can build demos. Having all four means you can build products professionals trust with their reputations.
And We Have Advantages That Accelerate Our Lead
Having the four essential pillars is necessary. But two additional advantages strengthen our position:
We have the scale. One million professionals using our AI in production teaches us things competitors can’t learn from pilots. Every edge case becomes common. Every rare failure happens daily. That feedback loop makes our AI better, faster.
We have the capital. Thomson Reuters invests more than $200 million annually in productized AI and has 11 billion dollars in capital capacity through 2028 to fund continued innovation and selective acquisitions.
But having all four pillars plus scale and capital only matters if professionals actually trust your AI with their work. And trust at this level—where reputations, client relationships, and regulatory compliance are on the line—requires a different approach than consumer AI.
Trust and Capability: Our Competitive Advantage
Here’s what we learned building AI at scale: in professional work, you need both trust and breakthrough capability. One without the other isn’t enough.
Consumer AI optimizes for impressive demos. Professional AI must deliver results you can stake your career on, while actually transforming how work gets done.
Two years ago, we launched AI Assisted Research, the first generative AI feature in Westlaw. We had a vision of what “good” looked like, but deploying to real legal professionals taught us that defining quality in AI is iterative, not one-time.
Those early months were challenging. Every conversation with customers, every piece of feedback, every deployment taught us something new about where the bar needed to be. We learned that professionals expect both the precision they’ve always relied on from Thomson Reuters and the transformational capability they’re experiencing with generative AI.
We built for both. And we used what we learned to build something even better.
Every piece of feedback from AI Assisted Research informed how we developed Westlaw Deep Research—now the world’s leading AI legal research capability. Deep Research doesn’t just answer legal questions; it analyzes thousands of documents, synthesizes complex findings across jurisdictions, and delivers court-ready analysis with the citations and reasoning professionals require. It’s what happens when you combine frontier AI technology with authoritative content, domain expertise, and real-world learning from a million professionals.
That same approach drives everything we build. CoCounsel delivers capabilities no one else can match – the most advanced legal research system in the world, and the first AI that can prepare a complete 1040 tax return. Not suggestions or drafts, but finished work that meets professional standards.
These aren’t incremental improvements. They’re capabilities that fundamentally change what’s possible in professional work.
And we deliver them with the trust professionals require:
- Accuracy you can stake your reputation on – because we verify outputs against authoritative sources
- Transparency you can explain to clients and regulators – because we show our reasoning and cite our sources
- Security that guarantees your data stays yours – because we understand professional confidentiality isn’t negotiable
- Integration with professional workflows – because AI that sits outside your tools doesn’t transform your work
This is what professional-grade AI means. Breakthrough capability with professional trust. And this is why one million professionals chose Thomson Reuters.
We’re Accelerating—And Defining the Future
One million users proves we’re the leader in professional AI. But leadership isn’t a milestone—it’s a commitment to staying ahead.
We’re advancing development of our vertically specialized language model designed specifically for legal, tax, and compliance work. We’re expanding CoCounsel’s global footprint. We’re releasing new workflow-specific capabilities throughout 2026 that will further separate us from competitors.
Because here’s what we know: the real AI race isn’t about who builds the smartest general-purpose model. It’s about who can deliver transformational ROI in high-stakes professional environments where trust is non-negotiable.
Thomson Reuters is leading that race. We have the technology, expertise, content, tools, scale, and capital. We have one million professionals who’ve chosen us as their AI partner. And we’re building the best professional AI in the world.
This isn’t the beginning of our AI journey—we’ve been on it for decades. But it is the moment when the market recognizes what we’ve become: a leading AI technology company that’s defining what professional-grade AI means.
One million professionals are already experiencing that future. And we’re just getting started.
