r/LawFirm
“We went through several of them and are now having much better outcomes training Claude on specific skills.”
in “Case management software/tech stack (and issues) - PI firm”
ValuesAccuracyUnverified voice
Home › Compare › Claude vs Copilot
Claude vs Copilot: what lawyers say.
Short answer. Claude has net sentiment +37 on 872 public lawyer voices and Copilot has +5 on 155, as of . Claude is ahead on this record: the two 90% bands do not overlap. Net is like minus dislike as a share of voices.
Claude ahead on this record: the two 90% bands do not overlap.
872 voices on Claude and 155 on Copilot, 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. Claude is a general-purpose model by Anthropic; Copilot is a general-purpose model by Microsoft.
Side by side
Rates and bands, not raw totals.
| Claude |  Copilot | |
|---|---|---|
| Voices on record | 872 | 155 |
| Like · mixed · dislike | 492 · 103 · 169 | 61 · 24 · 54 |
| Net like minus dislike, % of voices | +37 90% band +33 to +41 | +5 90% band −7 to +16 |
| Confidence | High | Medium |
| Per 100 voices: like · dislike · name hallucinations | 56 · 19 · 6 | 39 · 35 · 7 |
| Latest voice |
Claude has the higher net (+37 against +5) and the two 90% bands do not overlap. That describes who posts and how they feel, not which product is better. Difference in net: +32 points (Claude minus Copilot).
By task
What they were doing when they posted.
| Task | Claude | Copilot |
|---|---|---|
| Legal research | 82 voices · net +41 | 10 voices · net −30 |
| Drafting | 141 voices · net +57 | 30 voices · net +17 |
| Contract review | 65 voices · net +46 | 9 voices · net +22 |
| Citation checking | 31 voices · net +16 | 2 voices, too few for a net |
| Discovery | 17 voices · net +35 | 2 voices, too few for a net |
| Summarization | 27 voices · net +59 | 19 voices · net +11 |
| General use | 455 voices · net +28 | 78 voices · net 0 |
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
Claude · complaints
- Privacy 145
- Accuracy 108
- Price 62
Claude · what they value
- Time saved 112
- Drafting quality 94
- Accuracy 87
Copilot · complaints
- Accuracy 38
- Privacy 28
- Hallucination 11
Copilot · what they value
- Time saved 17
- Ease of use 17
- Drafting quality 12
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 Claude · verbatim
r/legaltech
“After test driving Harvey, the Lexus AI product, Chat, and Claude, we ended up going with a Claude team plan and keeping our Westlaw classic subscription (pretty cheap for our small law firm).”
ValuesBuying decisionSays: works at a law firm
23 more voices in this thread
- r/legaltech · Jul 24, 2026ClaudeNeutral
“Zero Data Retention (ZDR) is Enterprise-only, not available on Team.”
open - r/legaltech · Jul 23, 2026ClaudeCriticizes
“If you're using Fable, your data is being retained for 30 days for abuse monitoring.”
open - r/legaltech · Jul 14, 2026ClaudeNeutralShares a session closeout log template used with Claude to record files accessed, deletion of temporary files and confirmation that no external tools were used on privileged matters. (summary, not a quote)open
- r/legaltech · Jul 14, 2026ClaudeNeutral
“Yeah, we require turning Claude memory off to prevent cross-matter contamination.”
open - r/legaltech · Jul 13, 2026ClaudeValues
“We are using Claude Team and very happy with it.”
open - r/legaltech · Jul 13, 2026ClaudeCriticizes
“Done start your legal research with Claude. You'll get hallucinations and if even one ends up in the brief you file then you're in hot water.”
open - r/legaltech · Jul 13, 2026ClaudeMixed
“I would agree with sentiments, teams is a step up but Enterprise is where it’s proper enterprise grade.”
open - r/legaltech · Jul 12, 2026ClaudeNeutral
“Team and Enterprise run under Anthropic's Commercial Terms, no training by default.”
open - r/legaltech · Jul 12, 2026PerplexityNeutral
“Perplexity Enterprise Pro is $40 a seat, includes tokens, and is enterprise level with ZDR, audit trail, etc.”
open - r/legaltech · Jul 12, 2026CoCounselMixed
“The first version was sub par to be perfectly honest but early feedback of their new version is very positive.”
open - r/legaltech · Jul 12, 2026ClaudeNeutral
“Claude Team doesn't train on your data, but client info is still being transmitted to Anthropic's servers, you're relying on their security, not your own.”
open - r/legaltech · Jul 11, 2026CoCounselValues
“Just get CoCounsel. You’re over thinking trying to mix and match to save a few bucks.”
open - r/legaltech · Jul 11, 2026ClaudeMixed
“Bottom line: the Team plan is a big step up from the wild-west alternative, but I'd treat the ZDR/Enterprise terms as the actual privilege boundary, not the Team UI setting.”
open - r/legaltech · Jul 11, 2026
ChatGPTCriticizes“From the compliance side, it's a headache. It was too much of a footgun with a ZDR + new model = non-compliant.”
open - r/legaltech · Jul 11, 2026CoCounselNeutral
“We are using Eve and CoCounsel with Westlaw to avoid that right now while I build out some automation with Claude but my goal is to do essentially what you're doing and tie Claude to CoCounsel to be able to do everything in one place.”
open - r/legaltech · Jul 11, 2026ClaudeValues
“When you crank it up to opus level extra it actually does this very well.”
open - r/legaltech · Jul 11, 2026PerplexityValues
“I would use Perplexity Enterprise Pro- only $40 a seat and get the benefits of Claude Opus 8 and ChatGPT with a ZDR, audit trail, etc.”
open - r/legaltech · Jul 11, 2026ClaudeCriticizes
“Ultimately, they are warning that if you use any other tier (at this moment) that doesn't include ZDR or is a tenant solution that includes such, then your confidential information can be read by their employees in that 30-day hold.”
open - r/legaltech · Jul 11, 2026ClaudeCriticizes
“Anthropic states that you don't have confidentiality unless you use ZDR or a tenant solution that provides for confidentiality.”
open - r/legaltech · Jul 11, 2026ClaudeValues
“It shines in analyzing long AIA construction docs and summarizing them or editing them within co-work.”
open - r/legaltech · Jul 11, 2026ClaudeMixed
“I allow claude access to my emails for admin support and select documents I feed it to prepare stuff I want it to prepare, then I finish up the work myself since its not able to prepare final work product to my liking anyway.”
open - r/legaltech · Jul 11, 2026ClaudeCriticizes
“Claude Teams provides no facility for you to do an ediscovery of your firm’s usage of Claude.”
open - r/legaltech · Jul 11, 2026ClaudeNeutral
“If you have to do any sort of discovery or production of prompts and/or responses in Claude, Team won’t allow you to do so.”
open
Hacker News
“As a lawyer, Claude 4 is the best writer, and usually, but not always, the leader in legal reasoning.”
in “Gemini-2.5-pro-preview-06-05”
ValuesDraftingSelf-described lawyer
On Copilot · verbatim
Bl
Bluesky · bsky.app
“If so, I demand your Bar Number because you offered negligent advice, like that and not to use Copilot, which I recently did, cross-checked by two more AIs to construct and file a complaint, so maybe I'm familiar with law, just a bit.”
ValuesDrafting qualityUnverified voice
r/legaltech
“Copilot is deceptively expensive, especially Cowork”
in “Lawyers using ChatGPT: how are you protecting client data?” · 18 voices
CriticizesPriceUnverified voice
17 more voices in this thread
- r/legaltech · Oct 11, 2026CriticizesVendor documentation shows web search queries and EU data residency fall outside the no-training and DPA protections for Copilot, ChatGPT and Claude. (summary, not a quote)open
- r/legaltech · Oct 9, 2026NeutralConsumer and business plans from OpenAI and Anthropic differ in data protection, yet none creates privilege and only enterprise API use gives zero retention. (summary, not a quote)open
- r/legaltech · Oct 8, 2026ChatGPTValues
“The contract is no different from them using any other tool out there.”
open - r/legaltech · Oct 7, 2026ChatGPTCriticizes
“A pivileged convo can get read by someone with zero duty to your client and you'll never know which is the risk to deal with.”
open - r/legaltech · Oct 7, 2026NeutralClient data can be redacted with a small local model before it goes to Claude or ChatGPT, though open-source local models perform worse than closed ones. (summary, not a quote)open
- r/legaltech · Oct 7, 2026ClaudeValuesLawyers should use the Claude Teams plan even as a solo practitioner and avoid putting protected third-party litigation data into lower tiers. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeCriticizes
“GPT will always spot something that Claude has got wrong or missed, and visa versa”
open - r/legaltech · Oct 6, 2026
HarveyNeutral“I think a big part of Harvey and Legora’s moat is trust by association.”
open - r/legaltech · Oct 6, 2026MixedNo-training settings on mid-tier plans are a good first step, but privilege protection depends on contractual terms covering retention, provider review access and admin controls. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutralThe firm uses an Enterprise Claude plan installed locally with training disabled, avoids ChatGPT, and never enters confidential client data. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ChatGPTValues
“I personally see that as overkill given how much data attorneys regularly entrust to digital providers without that same standard.”
open - r/legaltech · Oct 6, 2026ChatGPTNeutral
“It's only the pure consumer level plans that require opt-out instead of defaulting to it.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ClaudeNeutralEnterprise Claude would be an approved tool while personal Claude or ChatGPT accounts would not be. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutral
“This ruling says nothing about attorneys using AI and confidential information, it just confirms that AI tools are just as valid for search by authorities as is google, facebook, or any other digital tool on your machine.”
open - r/legaltech · Oct 6, 2026ClaudeCriticizes
“Even the paid Claude AI consumer plans do not contain a confidentiality rider.”
open
r/legaltech
“Copilot is fine for pulling CPs out of a credit agreement or purchase agreement to make the initial draft checklist, but pushing your team toward a dedicated closing management tool is what actually helps with the manual administrative grind.”
in “Transactional checklist, project management and tracking”
MixedContract reviewUnverified voice
When both come up in one thread
Voices from threads where posters name Claude and Copilot. Open the thread for the whole exchange.
“Even the paid Claude AI consumer plans do not contain a confidentiality rider.”
in “Lawyers using ChatGPT: how are you protecting client data?” · 18 voices
CriticizesPrivacyUnverified voice
17 more voices in this thread
- r/legaltech · Oct 11, 2026CriticizesVendor documentation shows web search queries and EU data residency fall outside the no-training and DPA protections for Copilot, ChatGPT and Claude. (summary, not a quote)open
- r/legaltech · Oct 9, 2026NeutralConsumer and business plans from OpenAI and Anthropic differ in data protection, yet none creates privilege and only enterprise API use gives zero retention. (summary, not a quote)open
- r/legaltech · Oct 8, 2026ChatGPTValues
“The contract is no different from them using any other tool out there.”
open - r/legaltech · Oct 7, 2026ChatGPTCriticizes
“A pivileged convo can get read by someone with zero duty to your client and you'll never know which is the risk to deal with.”
open - r/legaltech · Oct 7, 2026NeutralClient data can be redacted with a small local model before it goes to Claude or ChatGPT, though open-source local models perform worse than closed ones. (summary, not a quote)open
- r/legaltech · Oct 7, 2026ClaudeValuesLawyers should use the Claude Teams plan even as a solo practitioner and avoid putting protected third-party litigation data into lower tiers. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeCriticizes
“GPT will always spot something that Claude has got wrong or missed, and visa versa”
open - r/legaltech · Oct 6, 2026CopilotCriticizes
“Copilot is deceptively expensive, especially Cowork”
open - r/legaltech · Oct 6, 2026HarveyNeutral
“I think a big part of Harvey and Legora’s moat is trust by association.”
open - r/legaltech · Oct 6, 2026MixedNo-training settings on mid-tier plans are a good first step, but privilege protection depends on contractual terms covering retention, provider review access and admin controls. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutralThe firm uses an Enterprise Claude plan installed locally with training disabled, avoids ChatGPT, and never enters confidential client data. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ChatGPTValues
“I personally see that as overkill given how much data attorneys regularly entrust to digital providers without that same standard.”
open - r/legaltech · Oct 6, 2026ChatGPTNeutral
“It's only the pure consumer level plans that require opt-out instead of defaulting to it.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ClaudeNeutralEnterprise Claude would be an approved tool while personal Claude or ChatGPT accounts would not be. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutral
“This ruling says nothing about attorneys using AI and confidential information, it just confirms that AI tools are just as valid for search by authorities as is google, facebook, or any other digital tool on your machine.”
open
“Copilot is deceptively expensive, especially Cowork”
in “Lawyers using ChatGPT: how are you protecting client data?” · 18 voices
CriticizesPriceUnverified voice
17 more voices in this thread
- r/legaltech · Oct 11, 2026CriticizesVendor documentation shows web search queries and EU data residency fall outside the no-training and DPA protections for Copilot, ChatGPT and Claude. (summary, not a quote)open
- r/legaltech · Oct 9, 2026NeutralConsumer and business plans from OpenAI and Anthropic differ in data protection, yet none creates privilege and only enterprise API use gives zero retention. (summary, not a quote)open
- r/legaltech · Oct 8, 2026ChatGPTValues
“The contract is no different from them using any other tool out there.”
open - r/legaltech · Oct 7, 2026ChatGPTCriticizes
“A pivileged convo can get read by someone with zero duty to your client and you'll never know which is the risk to deal with.”
open - r/legaltech · Oct 7, 2026NeutralClient data can be redacted with a small local model before it goes to Claude or ChatGPT, though open-source local models perform worse than closed ones. (summary, not a quote)open
- r/legaltech · Oct 7, 2026ClaudeValuesLawyers should use the Claude Teams plan even as a solo practitioner and avoid putting protected third-party litigation data into lower tiers. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeCriticizes
“GPT will always spot something that Claude has got wrong or missed, and visa versa”
open - r/legaltech · Oct 6, 2026HarveyNeutral
“I think a big part of Harvey and Legora’s moat is trust by association.”
open - r/legaltech · Oct 6, 2026MixedNo-training settings on mid-tier plans are a good first step, but privilege protection depends on contractual terms covering retention, provider review access and admin controls. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutralThe firm uses an Enterprise Claude plan installed locally with training disabled, avoids ChatGPT, and never enters confidential client data. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ChatGPTValues
“I personally see that as overkill given how much data attorneys regularly entrust to digital providers without that same standard.”
open - r/legaltech · Oct 6, 2026ChatGPTNeutral
“It's only the pure consumer level plans that require opt-out instead of defaulting to it.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ChatGPTValues
“Both of these services default to not training on any of your chats or data rather than requiring you to opt out. So quite affordable.”
open - r/legaltech · Oct 6, 2026ClaudeNeutralEnterprise Claude would be an approved tool while personal Claude or ChatGPT accounts would not be. (summary, not a quote)open
- r/legaltech · Oct 6, 2026ClaudeNeutral
“This ruling says nothing about attorneys using AI and confidential information, it just confirms that AI tools are just as valid for search by authorities as is google, facebook, or any other digital tool on your machine.”
open - r/legaltech · Oct 6, 2026ClaudeCriticizes
“Even the paid Claude AI consumer plans do not contain a confidentiality rider.”
open
“Two months of coding with Claude and Gemini produced a program that the Lexis rep was impressed by.”
in “AI workflows for an in house lawyer” · 8 voices
ValuesTime savedUnverified voice
7 more voices in this thread
- r/legaltech · Aug 15, 2026HarveyValues
“I used Harvey every day but it comes with a library of workflows that lawyers can amend for their own use and honestly it’s been game changing.”
open - r/legaltech · Aug 14, 2026ClaudeMixed
“AI can generate consistent work products. You just need to program it and give it the resources to do so.”
open - r/legaltech · Aug 13, 2026CopilotNeutral
“FYI you can select the model you use for enterprise copilot. It is set to auto, but you can choose for example GPT Sol 5.6 which is very powerful.”
open - r/legaltech · Aug 13, 2026ClaudeValues
“I just picked Claude a while ago and decided to learn that platform and ecosystem thoroughly.”
open - r/legaltech · Aug 13, 2026NeutralIn-house lawyers should map the workflow first, use enterprise-tier tools for real contracts, require structured output and keep a human sign-off on every step. (summary, not a quote)open
- r/legaltech · Aug 13, 2026ClaudeValues
“Copilot is fine but if you can swing Claude or OpenAI and use Claude Code or Codex or their work versions, do that.”
open - r/legaltech · Aug 13, 2026CopilotValues
“It’s been helpful, but I want to knuckle down over the next month and learn this properly and systematically.”
open
“It’s been helpful, but I want to knuckle down over the next month and learn this properly and systematically.”
in “AI workflows for an in house lawyer” · 8 voices
ValuesContract reviewUnverified voice
7 more voices in this thread
- r/legaltech · Aug 15, 2026HarveyValues
“I used Harvey every day but it comes with a library of workflows that lawyers can amend for their own use and honestly it’s been game changing.”
open - r/legaltech · Aug 14, 2026ClaudeMixed
“AI can generate consistent work products. You just need to program it and give it the resources to do so.”
open - r/legaltech · Aug 14, 2026ClaudeValues
“Two months of coding with Claude and Gemini produced a program that the Lexis rep was impressed by.”
open - r/legaltech · Aug 13, 2026CopilotNeutral
“FYI you can select the model you use for enterprise copilot. It is set to auto, but you can choose for example GPT Sol 5.6 which is very powerful.”
open - r/legaltech · Aug 13, 2026ClaudeValues
“I just picked Claude a while ago and decided to learn that platform and ecosystem thoroughly.”
open - r/legaltech · Aug 13, 2026NeutralIn-house lawyers should map the workflow first, use enterprise-tier tools for real contracts, require structured output and keep a human sign-off on every step. (summary, not a quote)open
- r/legaltech · Aug 13, 2026ClaudeValues
“Copilot is fine but if you can swing Claude or OpenAI and use Claude Code or Codex or their work versions, do that.”
open
Short answers
From the same record as the tables above.
Claude vs Copilot for lawyers: what do lawyers say?
Claude has net sentiment +37 on 872 public lawyer voices and Copilot has +5 on 155, as of . Claude 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 Claude and Copilot?
We count 872 public voices on Claude and 155 on Copilot, posted since 2023 by lawyers and people who work with them, as of . Each voice is one post or comment that names the tool.
Do lawyers feel better about Claude or Copilot?
Net sentiment (like minus dislike, as a share of voices) is +37 for Claude, 90% band +33 to +41, and +5 for Copilot, 90% band −7 to +16. Claude has the higher net (+37 against +5) 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 Claude and Copilot for?
The task named most often on Claude is general use (455 of 872 voices); on Copilot it is general use (78 of 155 voices). A voice has one task, set by our classifier.
Task reports with both: Legal research report · Drafting report · Summarization report