This post is an analysis of a market shift, not legal advice, not a substitute for advice from your own attorney, and not a recommendation of any particular tool or service.

For two years, Casetext offered something the legal research market didn't have a lot of: an affordable, GPT-4-powered research assistant that solo and small-firm attorneys could actually use without a Westlaw subscription they didn't need and couldn't justify.

Then Thomson Reuters bought it for $650 million, folded it into Westlaw, and shut down the standalone product on April 1, 2025. CoCounsel — the assistant itself — still exists. It just isn't available on its own anymore, and it isn't aimed at the small-firm market it was built for.

This post is about what that change actually means for the attorneys it affected most, what's missing now, and what the landscape looks like on the other side.

What Casetext was

Casetext started as a legal research platform built around a different idea: use AI to help attorneys find and understand case law faster, without requiring the full Westlaw or LexisNexis experience. By the time Thomson Reuters acquired it, it had carved out a real niche — attorneys who wanted AI-assisted research without an enterprise research subscription.

Then came CoCounsel, launched in March 2023. It was billed as the first GPT-4-powered legal AI assistant — a tool that could draft memoranda, review deposition transcripts, analyze contracts, and summarize case law, all from a natural-language prompt. For solo and small-firm attorneys, the pitch was compelling: AI research and drafting assistance without the Westlaw price tag and without the enterprise sales process.

For a while, it worked. CoCounsel was accessible, relatively affordable, and genuinely useful for a certain kind of legal work.

What happened

Thomson Reuters acquired Casetext in 2023 for $650 million. At the time, the acquisition looked like a strategic move to bring AI into the Westlaw ecosystem. It was — but it was also the beginning of the end for Casetext as a standalone offering.

On April 1, 2025, Thomson Reuters shut down Casetext as a standalone product. CoCounsel technology was absorbed into the Westlaw ecosystem. Existing subscribers were migrated to Westlaw, in many cases with promotional pricing. "Lifetime" rate holders lost their guaranteed pricing.

CoCounsel still exists. It's just not available as a standalone product, and it's not aimed at the same market anymore.

What changed for the attorneys who used it

1. No more standalone access

The most direct change: if you used Casetext or CoCounsel as a standalone tool, you can't anymore. The path forward is Westlaw. If you already have Westlaw, you may have access to CoCounsel through it. If you don't, you're buying into a research platform to get the assistant — which is a different cost equation than before.

2. Enterprise repositioning

CoCounsel is now positioned for enterprise and BigLaw use, not solo and small-firm use. Thomson Reuters launched CoCounsel Legal in August 2025 with guided workflows — draft a privacy policy, draft an employee policy, draft a complaint, draft discovery requests and responses, review a deposition transcript. In February 2026, they announced the next generation — more autonomous agentic AI workflows, deeper content coverage, targeting Am Law 200 firms and legal tech vendors, with co-development partnerships from Sullivan & Cromwell, Ropes & Gray, Skadden, and Cooley.

That's a far cry from the accessible, small-firm-friendly tool Casetext started as. The market it was built for has been deprioritized in favor of the enterprise market it was acquired to serve.

3. Pricing uncertainty for legacy users

Attorneys who had "lifetime" pricing through Casetext lost their guaranteed rates. They're now on promotional Westlaw pricing, which may or may not hold. The certainty they paid for is gone, replaced by whatever the Westlaw renewals look like going forward.

4. Loss of an affordable option

For solo and small-firm attorneys who didn't want Westlaw — or couldn't justify it — Casetext was a middle path. Not as full-featured as Westlaw, not as expensive, with AI assistance that made research and drafting faster. That middle path is closed. The options on either side are more expensive or more limited than what Casetext offered on its own.

What the gap looks like now

The legal research market for solo and small-firm attorneys now looks something like this:

• Westlaw / LexisNexis. Full-featured, expensive, enterprise-oriented. CoCounsel lives inside Westlaw now. If you already have it, you may have access. If you don't, the entry point is high.
• Standalone AI legal research tools. A small and shifting field. Tools like Spellbook, NexLaw, and others compete in adjacent spaces, but none have the brand recognition or the installed base Casetext had. The space is less proven, less established, and less familiar to attorneys who were Casetext users.
• General-purpose AI. ChatGPT, Claude, Gemini — all capable of legal research and drafting assistance, but also all general-purpose tools that require the attorney to verify, supervise, and take responsibility for the output. They're not legal research tools with built-in citation, Shepardizing, or source verification. They're powerful, but they're not a substitute for a legal research platform with the right guardrails.
• Nothing. For the attorney who simply can't justify a Westlaw subscription and didn't use Casetext because it was the affordable option — there's a real gap. AI-assisted legal research that's accessible at a small-firm price point is harder to find than it was two years ago.

That last group is the one Casetext served. And it's the group that lost the most when the standalone product was shut down.

Why it matters for South Jersey and similar markets

Solo and small-firm attorneys in South Jersey — and markets like it — face a particular set of constraints. They don't have the volume to justify full enterprise research subscriptions. They don't have in-house research staff. They bill at rates that make expensive tools harder to absorb. They need tools that actually save time, not tools that require a dedicated person to learn and maintain.

Casetext fit that profile reasonably well. It was AI-assisted, relatively affordable, and usable without an enterprise rollout. Its removal from the market leaves a gap in exactly the segment that's hardest to serve — the solo and small-firm attorney who needs legal research support but operates on a budget that can't absorb Westlaw pricing.

That gap matters for a few reasons:

• More reliance on general-purpose AI. Attorneys who lose Casetext/CoCounsel may turn to ChatGPT, Claude, or Gemini for legal research and drafting. Those tools are capable, but they're not legal research platforms. They don't verify citations. They don't Shepardize. They require the attorney to catch errors the way a legal research platform is designed to flag them. The work still has to be supervised — but the tool the attorney is supervising is less purpose-built for the task.
• More time spent on research the old way. Attorneys who don't replace Casetext with something else may spend more time on research and drafting that used to be faster. That's real time, and it comes out of the matter or the firm's capacity.
• More reliance on support staff. Attorneys who need research support but don't have a standalone tool may lean more heavily on paralegals, associates, or support staff to do the work by hand. That's fine — support staff exist for exactly that — but it's a different cost structure than an AI-assisted tool was.

What attorneys can do instead

There's no single replacement that maps one-to-one onto what Casetext/CoCounsel was. But there are options, and the right one depends on what the attorney actually used Casetext for.

If you need legal research with citations and source verification

Westlaw and LexisNexis are still the full-featured options. If you already have one, check whether CoCounsel access is included. If you don't, the cost is significant — but so is the feature set. For attorneys who do high-volume research and need the full citation ecosystem, it's still the right call. For attorneys who don't, it's probably overkill.

If you need AI-assisted drafting and research without the enterprise stack

General-purpose AI tools — ChatGPT, Claude, Gemini — are the most accessible options. They're capable of legal research, drafting, summarization, and analysis. They're also general-purpose, which means the attorney is responsible for verifying the output, checking citations, and making sure the work is right. For an attorney who understands that and is willing to supervise the output, these tools can be genuinely useful. For an attorney who expects the tool to get it right on its own, they're not the right tool.

If you need a legal-specific AI tool

Newer standalone tools in the legal AI space may fill part of the gap. Tools like Spellbook, NexLaw, and others offer legal-specific AI assistance. The field is less established than Casetext was, the brand recognition is lower, and the options are shifting. For an attorney evaluating this path, the practical move is to test a few options against the actual work you need them to do — not to assume any of them replicate what Casetext was.

If you need research support as a service, not a tool

For some matters, the right move isn't a tool at all — it's support. An attorney-supervised legal support provider can handle research, drafting, chronology, exhibit prep, and related work under the attorney's direction, without the attorney having to build a research stack or supervise a general-purpose AI tool. That's a different model — service instead of software — and it's not right for every matter. But for matters where the research load is concentrated, time-sensitive, or tied to a specific case need, it's a practical alternative to buying a tool the firm may not fully use.

What this doesn't mean

A few things this change doesn't mean:

• It doesn't mean Casetext's technology disappeared. The underlying CoCounsel technology lives on inside Westlaw. It's just bundled, repositioned, and no longer standalone.
• It doesn't mean AI legal research is going away. If anything, the opposite — the segment is getting more investment, not less. But the investment is flowing toward enterprise platforms, not standalone small-firm tools.
• It doesn't mean solo and small-firm attorneys are stuck without options. Options exist. They're just different options than the ones that were there when Casetext was standalone — and they require more evaluation to find the right fit.
• It doesn't mean the old Casetext pricing is available anywhere. "Lifetime" rates are gone. Promotional Westlaw pricing may exist for a time. But the pricing that made Casetext accessible to small firms is not a sustainable market offering anymore.

The larger pattern

The Casetext shutdown isn't an isolated event. It's part of a broader consolidation in legal AI:

• Clio acquired vLex for $1 billion in November 2025 and folded it into the Intelligent Legal Work Platform — the largest M&A transaction in legal technology history. Clio is now an AI-first legal intelligence platform, in direct competition with Thomson Reuters.
• Thomson Reuters is building CoCounsel Legal as an enterprise platform with BigLaw co-development partners, targeting Am Law 200 firms — not the small-firm market Casetext started in.
• Harvey is forming integrations across the litigation stack — with Everlaw, with Ironclad, with the broader evidence and CLM ecosystem.
• EvenUp raised $150M at a $2B+ valuation for AI-powered demand letter drafting and case documentation aimed at personal injury firms — a different niche, but the same broader investment in legal AI market segments.

The pattern is clear: legal AI is consolidating around enterprise platforms, big content libraries, and integrated stacks. That's good for firms that can afford those platforms and need the full feature set. It's less good for the solo and small-firm market that Casetext served — the market that needed affordable, accessible, standalone AI legal research.

That market isn't gone. It's just less served than it was.

The bottom line

Casetext was an affordable, GPT-4-powered legal research assistant that solo and small-firm attorneys could use without a Westlaw subscription. Thomson Reuters bought it, absorbed it into Westlaw, and shut down the standalone product on April 1, 2025. CoCounsel still exists — inside Westlaw, repositioned for enterprise and BigLaw.

What's missing is the standalone, affordable, small-firm-accessible option that Casetext was. The gap is real. The alternatives are different — Westlaw for attorneys who can justify it, general-purpose AI for attorneys willing to supervise the output, newer legal AI tools for attorneys willing to evaluate an unsettled market, or support services for matters where the research load is concentrated and time-sensitive.

For solo and small-firm attorneys in South Jersey and similar markets, the practical move is to figure out what Casetext was actually doing for you — research, drafting, summarization, citation work, or something else — and find the right replacement for that specific need. Not to look for Casetext 2.0, because that product doesn't exist anymore.