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CoCounsel vs Lexis+ AI: what lawyers say.

Q: CoCounsel vs Lexis+ AI for lawyers: what do lawyers say?

CoCounsel has net sentiment +2 on 411 public lawyer voices and Lexis+ AI has −14 on 294, as of Oct 26, 2026. CoCounsel is ahead on this record: the two 90% bands do not overlap. Net is like minus dislike as a share of voices.

Q: How many lawyers have posted about CoCounsel and Lexis+ AI?

We count 411 public voices on CoCounsel and 294 on Lexis+ AI, posted since 2023 by lawyers and people who work with them, as of Oct 26, 2026. Each voice is one post or comment that names the tool.

Q: What do lawyers use CoCounsel and Lexis+ AI for?

The task named most often on CoCounsel is legal research (168 of 411 voices); on Lexis+ AI it is legal research (184 of 294 voices). A voice has one task, set by our classifier.

Short answer. CoCounsel has net sentiment +2 on 411 public lawyer voices and Lexis+ AI has −14 on 294, as of Oct 26, 2026. CoCounsel is ahead on this record: the two 90% bands do not overlap. Net is like minus dislike as a share of voices.

CoCounsel

net · band −4 to +9

411 voices High

Lexis+ AI

−14

net · band −23 to −6

294 voices Medium

CoCounsel ahead on this record: the two 90% bands do not overlap.

411 voices on CoCounsel and 294 on Lexis+ AI, all public posts by lawyers and people who work with them, since 2023. This is how they describe using each tool, not a test of the tools. CoCounsel is a legal AI assistant by Thomson Reuters; Lexis+ AI is a legal research platform by LexisNexis.

Side by side

Rates and bands, not raw totals.

	CoCounsel	Lexis+ AI
Voices on record	411	294
Like · mixed · dislike	152 · 84 · 142	94 · 46 · 136
Net like minus dislike, % of voices	+2 90% band −4 to +9	−14 90% band −23 to −6
Confidence	High	Medium
Per 100 voices: like · dislike · name hallucinations	37 · 35 · 7	32 · 46 · 11
Latest voice	Oct 19, 2026	Oct 21, 2026

CoCounsel has the higher net (+2 against −14) and the two 90% bands do not overlap. That describes who posts and how they feel, not which product is better. Difference in net: +16 points (CoCounsel minus Lexis+ AI).

By task

What they were doing when they posted.

Task	CoCounsel	Lexis+ AI
Legal research	168 voices · net +17	184 voices · net −10
Drafting	35 voices · net +3	18 voices · net −11
Contract review	6 voices · net −17	0 voices
Citation checking	7 voices · net +14	17 voices · net −47
Discovery	18 voices · net 0	1 voice, too few for a net
Summarization	33 voices · net −30	10 voices · net −40
General use	135 voices · net −3	61 voices · net −10

Net here is plain like minus dislike as a share of that task’s voices, with no band: a task needs 5+ voices on a side to show one. Tasks with fewer on both sides are left out. A voice has one task, set by our classifier.

What they complain about and value

CoCounsel · complaints

Accuracy 148
Price 56
Hallucination 28

CoCounsel · what they value

Time saved 55
Accuracy 44
Data coverage 36

Lexis+ AI · complaints

Accuracy 132
Hallucination 32
Price 26

Lexis+ AI · what they value

Time saved 47
Accuracy 25
Data coverage 23

Counts are voices that name that complaint or value (top three per tool). A voice can name one of each. Not a comparison of raw totals: the bigger side has more posts of every kind.

In their own words

Each quote is a verbatim span of a counted voice, with its date and a link to the original.

On CoCounsel · verbatim

r/LawyertalkOct 19, 2026

“I use CoCounsel extensively as a corporate associate. It is very good.”

in “Opinions on CoCounsel?” · 17 voices

ValuesAccuracyUnverified voice

Original thread Share

16 more voices in this thread

r/Lawyertalk · Oct 19, 2026CoCounselMixedThe Westlaw-backed knowledge base is the real selling point, but drafting and Q&A features are not much better than a well-prompted Claude, so value depends on how research-heavy the practice is. (summary, not a quote)open
r/Lawyertalk · Oct 19, 2026CoCounselMixed“I ran a 40 lawyer pilot recently and came away impressed. Expected to hate it based on what I read, but the updated platform they rolled out in August is much better.”open
r/Lawyertalk · Oct 19, 2026CoCounselValues“The legal knowledge and database of citations and flags with Claude’s reasoning models can't be beat.”open
r/Lawyertalk · Oct 18, 2026CoCounselValues“I attended a demo of Westlaw's CoCounsel a few weeks ago and was thoroughly impressed.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“The last time I ran a prompt through cocounsel, its output was that I should consult an attorney.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It can find cases that answer your question very well. But it can’t understand the significance of anything it finds, making it useless for drafting.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“In my opinion, it’s not enough better than a top tier ChatGPT subscription to be worth paying the price Thompson Reuters is asking.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's good - based off Claude - with LN resources (if you've paid and have access to them, of course). It's as perfectly mediocre as you'd expect.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“The partner I’m working with LOVES Cocounsel and I consistently struggle to make it do what I need it to do. Almost always faster to do it myself.”open
r/Lawyertalk · Oct 18, 2026CoCounselNeutral“No way to save instructions that I know of.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“From my experience, CoCounsel can reliably analyze facts/input I provide it with general legal concepts, but lacks the capacity to narrowly analyze or apply specific case law.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“I think it’s overpriced for what it does. But that’s based on my free trial a couple of months ago.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's pretty good for broadly picking stuff out of there but connected Claude can't see it which is a bummer.”open
r/Lawyertalk · Oct 18, 2026ClaudeValues“I've reduced understating/overstating significantly through those.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“Just act like it’s a law clerk and know you’re going to have to wade thru some crap to get things professional.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's got access to resources but the actual AI of it doesn't seem any better than the other products out there.”open

r/LawyertalkOct 18, 2026

“I attended a demo of Westlaw's CoCounsel a few weeks ago and was thoroughly impressed.”

in “Opinions on CoCounsel?” · 17 voices

ValuesDemoUnverified voice

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16 more voices in this thread

r/Lawyertalk · Oct 19, 2026CoCounselMixedThe Westlaw-backed knowledge base is the real selling point, but drafting and Q&A features are not much better than a well-prompted Claude, so value depends on how research-heavy the practice is. (summary, not a quote)open
r/Lawyertalk · Oct 19, 2026CoCounselMixed“I ran a 40 lawyer pilot recently and came away impressed. Expected to hate it based on what I read, but the updated platform they rolled out in August is much better.”open
r/Lawyertalk · Oct 19, 2026CoCounselValues“The legal knowledge and database of citations and flags with Claude’s reasoning models can't be beat.”open
r/Lawyertalk · Oct 19, 2026CoCounselValues“I use CoCounsel extensively as a corporate associate. It is very good.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“The last time I ran a prompt through cocounsel, its output was that I should consult an attorney.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It can find cases that answer your question very well. But it can’t understand the significance of anything it finds, making it useless for drafting.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“In my opinion, it’s not enough better than a top tier ChatGPT subscription to be worth paying the price Thompson Reuters is asking.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's good - based off Claude - with LN resources (if you've paid and have access to them, of course). It's as perfectly mediocre as you'd expect.”open
r/Lawyertalk · Oct 18, 2026CoCounselCriticizes“The partner I’m working with LOVES Cocounsel and I consistently struggle to make it do what I need it to do. Almost always faster to do it myself.”open
r/Lawyertalk · Oct 18, 2026CoCounselNeutral“No way to save instructions that I know of.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“From my experience, CoCounsel can reliably analyze facts/input I provide it with general legal concepts, but lacks the capacity to narrowly analyze or apply specific case law.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“I think it’s overpriced for what it does. But that’s based on my free trial a couple of months ago.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's pretty good for broadly picking stuff out of there but connected Claude can't see it which is a bummer.”open
r/Lawyertalk · Oct 18, 2026ClaudeValues“I've reduced understating/overstating significantly through those.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“Just act like it’s a law clerk and know you’re going to have to wade thru some crap to get things professional.”open
r/Lawyertalk · Oct 18, 2026CoCounselMixed“It's got access to resources but the actual AI of it doesn't seem any better than the other products out there.”open

Hacker NewsMay 1, 2024

“I work at a law firm and CoCounsel[1] is pretty good.”

in “Higher-paid employees looking for work are having a tough time”

ValuesGeneral useSays: works at a law firm

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On Lexis+ AI · verbatim

r/LawFirmSep 21, 2026

“If you’re ok with those then it’s silly to be concerned with lexis.”

in “Protege with client data” · 3 voices

ValuesGeneral useUnverified voice

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2 more voices in this thread

r/LawFirm · Sep 21, 2026Lexis+ AINeutral“The firm rule you already have is the right floor: written no-train and confidential handling before any client data goes in. Protege Enterprise can meet that bar on paper.”open
r/LawFirm · Sep 21, 2026Lexis+ AINeutral“If your practice group cant name those four things, Protege is still a trust exercise.”open

r/LawyertalkSep 16, 2026

“My firm has Lexis Protege AI which I use mostly for AI-assisted legal research and simple motion drafting, but I feel that I'm probably missing out on its full potential.”

in “Lexis Peotege”

NeutralResearchSays: works at a law firm

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Hacker NewsJun 3, 2026

“It didn't feel drastically different from using ChatGPT with the ability to search the web [...]”

in “AI outperforms law professors in Stanford Law study” · 9 voices

MixedResearchUnverified voice

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8 more voices in this thread

Hacker News · Jun 3, 2026CriticizesLLM-drafted motions look good and usually pass unnoticed but are ethically dubious and hard for a human to catch, and reviewers grow lazier as the models improve. (summary, not a quote)open
Hacker News · Jun 3, 2026MixedAI often outperforms knowledge workers, but only with the right questions and correction, and unchecked errors could be catastrophic in high-risk fields like legal work. (summary, not a quote)open
Hacker News · Jun 3, 2026Lexis+ AIValues“This is where AI offerings from Thomson or Lexis could shine, especially in jurisdictions where case law is not freely available online.”open
Hacker News · Jun 3, 2026MixedAI chatbots can save some work, but their knowledge cutoff means they miss recent case law, so professionals relying on them risk personal liability and may have to redo the work. (summary, not a quote)open
Hacker News · Jun 3, 2026ChatGPTMixed“They are unbelievable at finding niche cases you would never have found on your own.”open
Hacker News · Jun 3, 2026GeminiNeutral“NotebookLM was considered slightly better than 2.5 Pro by the evaluators.”open
Hacker News · Jun 3, 2026NeutralUses a coding agent to do initial legal research and drafting, pulls the full text of cited laws, then has Gemini look for issues and criticize the draft. (summary, not a quote)open
Hacker News · Jun 3, 2026GeminiCriticizesAsked Gemini about personal conflicts; found it too conservative and shallow, so handles serious matters himself, using AI only for templated text. (summary, not a quote)open

When both come up in one thread

Voices from threads where posters name CoCounsel and Lexis+ AI. Open the thread for the whole exchange.

r/legaltechSep 15, 2026

CoCounsel

“CoCounsel 1.0 and 2.0 sucked. CoCounsel 3.0 is much much better.”

in “I think Legora may be strategically screwed” · 12 voices

ValuesData coverageUnverified voice

Original thread Share

11 more voices in this thread

r/legaltech · Oct 10, 2026ValuesThe author's own command-line code on the same foundation LLM matches or beats Harvey and Legora prompts for general contract review, so output quality, ease of use and price are not the barrier. (summary, not a quote)open
r/legaltech · Oct 9, 2026HarveyValues“Harvey probably has even more of a moat because of confidentiality issues with most AI products, you might need to disclose to opposing counsel or the court which tool you are using, and Harvey is the one least likely to cause a problem because most of biglaw uses it.”open
r/legaltech · Sep 21, 2026ClaudeMixed“Claude has degraded to the point where it is actually useless. It cannot follow instructions, it cannot see the big picture, and it is a terrible writer.”open
r/legaltech · Sep 17, 2026LegoraCriticizes“I can't stand the card-based Word Add In interface.”open
r/legaltech · Sep 15, 2026ChatGPTCriticizes“I doubt it's blatant but they'll be using something- your prompts, telemetry, an AI summary of your usage- all technically not your data.”open
r/legaltech · Sep 15, 2026LegoraCriticizes“Based on all of our conversations, they don't have a meaningful edge on any of those.”open
r/legaltech · Sep 15, 2026HarveyMixed“Midtier AI comfortable users found Harvey interesting and potentially useful and I am considering getting them subscriptions to use what is basically a wrapper.”open
r/legaltech · Sep 15, 2026Lexis+ AIValues“Lexis has proprietary content, Shepard, and decades of embedded distribution. That’s an actual moat independent of WL.”open
r/legaltech · Sep 15, 2026HarveyCriticizes“I personally think legora and Harvey prove that we are in a bubble. Literally gpt wrappers.”open
r/legaltech · Sep 14, 2026LegoraValues“As a question of motive yes, possibly, but Harvey and Legora are using the frontier models under the hood anyway and if you pay the frontier labs for a contract they will agree not to train on your data.”open
r/legaltech · Sep 14, 2026ChatGPTValues“The enterprise/business plan of a frontier model, particularly Claude or ChatGPT, is much better.”open

r/legaltechSep 15, 2026

Lexis+ AI

“Lexis has proprietary content, Shepard, and decades of embedded distribution. That’s an actual moat independent of WL.”

in “I think Legora may be strategically screwed” · 12 voices

ValuesData coverageUnverified voice

Original thread Share

11 more voices in this thread

r/legaltech · Oct 10, 2026ValuesThe author's own command-line code on the same foundation LLM matches or beats Harvey and Legora prompts for general contract review, so output quality, ease of use and price are not the barrier. (summary, not a quote)open
r/legaltech · Oct 9, 2026HarveyValues“Harvey probably has even more of a moat because of confidentiality issues with most AI products, you might need to disclose to opposing counsel or the court which tool you are using, and Harvey is the one least likely to cause a problem because most of biglaw uses it.”open
r/legaltech · Sep 21, 2026ClaudeMixed“Claude has degraded to the point where it is actually useless. It cannot follow instructions, it cannot see the big picture, and it is a terrible writer.”open
r/legaltech · Sep 17, 2026LegoraCriticizes“I can't stand the card-based Word Add In interface.”open
r/legaltech · Sep 15, 2026ChatGPTCriticizes“I doubt it's blatant but they'll be using something- your prompts, telemetry, an AI summary of your usage- all technically not your data.”open
r/legaltech · Sep 15, 2026LegoraCriticizes“Based on all of our conversations, they don't have a meaningful edge on any of those.”open
r/legaltech · Sep 15, 2026CoCounselValues“CoCounsel 1.0 and 2.0 sucked. CoCounsel 3.0 is much much better.”open
r/legaltech · Sep 15, 2026HarveyMixed“Midtier AI comfortable users found Harvey interesting and potentially useful and I am considering getting them subscriptions to use what is basically a wrapper.”open
r/legaltech · Sep 15, 2026HarveyCriticizes“I personally think legora and Harvey prove that we are in a bubble. Literally gpt wrappers.”open
r/legaltech · Sep 14, 2026LegoraValues“As a question of motive yes, possibly, but Harvey and Legora are using the frontier models under the hood anyway and if you pay the frontier labs for a contract they will agree not to train on your data.”open
r/legaltech · Sep 14, 2026ChatGPTValues“The enterprise/business plan of a frontier model, particularly Claude or ChatGPT, is much better.”open

r/paralegalJul 9, 2026

CoCounsel

“I agree, it sounds like a simple and fast process but after playing with these tools for an hour yesterday I knew I could have pulled the cases manually faster than it was taking Westlaw to process.”

in “Advice needed: Efficiently pulling cited cases from opponent’s PDF briefs?” · 2 voices

CriticizesIntegrationUnverified voice

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1 more voice in this thread

r/paralegal · Jul 8, 2026Lexis+ AICriticizes“They seem to focus more on generating a big, fancy AI report about the brief rather than just letting me download the cases themselves.”open

r/paralegalJul 8, 2026

Lexis+ AI

“They seem to focus more on generating a big, fancy AI report about the brief rather than just letting me download the cases themselves.”

in “Advice needed: Efficiently pulling cited cases from opponent’s PDF briefs?” · 2 voices

CriticizesIntegrationUnverified voice

Original thread Share

1 more voice in this thread

r/paralegal · Jul 9, 2026CoCounselCriticizes“I agree, it sounds like a simple and fast process but after playing with these tools for an hour yesterday I knew I could have pulled the cases manually faster than it was taking Westlaw to process.”open

Short answers

From the same record as the tables above.

CoCounsel vs Lexis+ AI for lawyers: what do lawyers say?

CoCounsel has net sentiment +2 on 411 public lawyer voices and Lexis+ AI has −14 on 294, as of Oct 26, 2026. CoCounsel is ahead on this record: the two 90% bands do not overlap. Net is like minus dislike as a share of voices.

How many lawyers have posted about CoCounsel and Lexis+ AI?

We count 411 public voices on CoCounsel and 294 on Lexis+ AI, posted since 2023 by lawyers and people who work with them, as of Oct 26, 2026. Each voice is one post or comment that names the tool.

Do lawyers feel better about CoCounsel or Lexis+ AI?

Net sentiment (like minus dislike, as a share of voices) is +2 for CoCounsel, 90% band −4 to +9, and −14 for Lexis+ AI, 90% band −23 to −6. CoCounsel has the higher net (+2 against −14) and the two 90% bands do not overlap. That describes who posts and how they feel, not which product is better.

What do lawyers use CoCounsel and Lexis+ AI for?

The task named most often on CoCounsel is legal research (168 of 411 voices); on Lexis+ AI it is legal research (184 of 294 voices). A voice has one task, set by our classifier.