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AI Prompts for Lawyers, Tested

Tested AI prompts for lawyers, filtered by task, with the model and date of each test.

Case research

TestedOct 19, 2026Case research

Research plan and issue outline — with zero invented citations

Before you open Westlaw or Lexis, get the issues, the elements to prove and a search plan. The prompt forbids case names and citations so nothing fabricated reaches a brief.

ChatGPTTested with gpt-6-astra · 5 of 5 criteria on average · 3 runs graded
You assist a US litigation associate at the start of legal research.
From the facts below produce: (1) the legal issues, framed as questions; (2) for each issue, the elements or factors the client would need to establish, as generally understood; (3) facts still needed from the client; (4) a research plan: which primary sources and databases to search and suggested search terms.
STRICT RULE: do not name any case, statute section or citation. Where authority is needed write [AUTHORITY TO FIND]. State that every point must be verified in primary sources by a licensed attorney.
Facts:
[Paste a short neutral fact pattern and the jurisdiction]
Test result · Oct 19, 2026
  • claude-opus-5-5: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 1 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 1 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

Jurisdiction: Illinois (state court). Client: Sample Bakery LLC (fictional), a small wholesale bakery. A former sales employee ("R. Example") signed a non-compete at hiring in 2022: 2 years, 100-mile radius, any baked-goods sales. Base salary was $48,000/year. He resigned in August 2026 and now sells for a competing bakery 30 miles away, contacting the client's café customers. The client wants to know whether it can stop him.

Contract drafting

TestedOct 19, 2026Contract drafting

Mutual NDA issue list against your client's playbook

Paste the counterparty's NDA clauses and your client's positions. Get a clause-by-clause issue table with proposed replacement language and a do-not-miss list.

ClaudeTested with claude-opus-5-5 · 5 of 5 criteria on average · 3 runs graded
You are assisting counsel for the party named in the playbook. Review the NDA clauses below against the playbook.
Output a table: Clause | Issue | Risk (High/Med/Low) | Proposed replacement language.
Then list anything missing from the NDA that the playbook requires.
Keep proposed language concise and consistent with the playbook. Do not assume facts; flag items requiring the supervising attorney's decision.
Material:
[Paste the NDA clauses and your client's playbook positions]
Test result · Oct 19, 2026
  • claude-opus-5-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 1 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 4.7 of 5 rubric criteria passed · 3 runs graded · all criteria met in 2 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

Our client: Example Robotics Inc. (fictional), disclosing and receiving party (mutual NDA). Purpose: evaluating a joint pilot. Counterparty draft: §2 Confidential Information means information marked "Confidential" at the time of disclosure. §4 Term: obligations survive for 1 year after disclosure. §6 Remedies: each party's total liability under this Agreement shall not exceed $5,000. §7 Residuals: Receiving Party may use any information retained in the unaided memory of its personnel. §9 Governing law: State of Delaware. Playbook (client positions): oral and visual disclosures covered if summarized in writing within 30 days; term 3 years and trade secrets protected as long as they remain trade secrets; no liability cap for breach of confidentiality; no residuals clause; injunctive relief must be available; governing law Delaware is acceptable; must include return/destruction of information on request.

Client intake

TestedOct 19, 2026Client intake

Intake summary with conflicts list and deadline flags

Turn a prospective client's intake email into a structured summary, every name to run through conflicts, and the urgent deadline you might otherwise miss — without promising representation.

ChatGPTTested with gpt-6-astra · 5 of 5 criteria on average · 3 runs graded
You assist a US law firm's intake team. From the prospective client's message below produce:
1. A neutral matter summary (max 120 words).
2. A conflicts-check list of every person and entity named, with their role.
3. Key dates and any potential deadline the attorney must evaluate urgently — do not state a specific limitations period as fact; flag it for attorney review.
4. Documents to request.
5. A short acknowledgement reply to the prospect that does NOT create an attorney-client relationship or give legal advice and says the firm has not yet agreed to represent them.
Message:
[Paste the prospective client's intake message]
Test result · Oct 19, 2026
  • claude-opus-5-5: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 2 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

From: Jamie Example (fictional) "Hi, my contractor, Sample Builders LLC (owner Pat Sample), stopped work on my kitchen remodel in May 2026 after I paid $28,000 of a $40,000 contract. The subcontractor, Example Electric, says it wasn't paid and filed a mechanic's lien on my house on September 2, 2026. My lender, Example Home Bank, sent a letter about the lien. My neighbor Chris Testa saw the crew leave. I live in Arizona. What can I do? Can you take my case?"

For every profession

TestedOct 20, 2026Meeting minutes

Teams transcript to minutes: keep a disputed date open, owners per action

Turn a Teams meeting transcript excerpt into minutes that record what was actually decided, keep a disputed go-live date open, and give every action an owner or say it has none.

ClaudeTested with claude-opus-5-5 · 5 of 5 criteria on average · 3 runs graded
Turn the Microsoft Teams transcript excerpt below into meeting minutes.

Use exactly these sections: Decisions, Open questions, Action items (owner – task – due date).
- Record only what the transcript shows was agreed as a decision.
- If people disagree and nobody settles it, put it under Open questions with each position and who holds it.
- Every action item needs an owner and a due date as stated; if none was stated, write "owner not assigned" or "no date set".
- Maximum 250 words. Do not add dates, amounts, names or commitments that are not in the transcript.

[Paste the transcript excerpt (speaker: text). Replace names of clients and colleagues with placeholders if needed.]
Test result · Oct 20, 2026
  • claude-opus-5-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 3.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 4 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 3.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 0 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 1 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

Teams meeting "New booking system — weekly check-in", 2026-10-21, fictional company Example Clinics Group. Priya (Project lead): Vendor says the build is on track. I'd like go-live on Monday November 16. Marco (Operations): November 16 is too tight for front-desk training. I want November 23. Priya: Let's not fix it today — I'll ask the vendor about a training sandbox first. Marco: Fine. Either way I'll book the large training room for front-desk staff. Priya: Good. I'll send the signed vendor contract to finance by October 28. Sam (Finance): And the extra licence budget — let's park that until finance replies on Friday. Marco: Someone also needs to update the patient FAQ page before go-live. Priya: Agreed, we need that. Let's figure out who next week. Sam: One more thing — we agreed to keep the old system read-only for 90 days after go-live, right? Priya: Yes, confirmed, 90 days read-only.

TestedOct 20, 2026Document summaries

Explain a PivotTable to your manager in 150 words, with exact numbers

Turn a pasted PivotTable (region by quarter) into a short, accurate summary for a manager, flagging the (blank) row instead of hiding it.

ClaudeTested with claude-sonnet-5 · 5 of 5 criteria on average · 3 runs graded
You are helping an analyst explain an Excel PivotTable to a manager who will not open the file.

Write a summary of at most 150 words based ONLY on the PivotTable output below:
- Give the grand total and each region's full-year total exactly as shown.
- Say which quarter had the highest and which the lowest total.
- If something in the table looks like a data problem, say what it is and what to check.
- Do not calculate percentages or growth rates, and do not guess reasons (seasonality, campaigns, staffing…) for any number.

[Paste the PivotTable output as text: row labels, column labels, values and the Grand Total. Remove client names.]
Test result · Oct 20, 2026
  • claude-opus-5-5: avg. 4.7 of 5 rubric criteria passed · 3 runs graded · all criteria met in 2 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 4.3 of 5 rubric criteria passed · 3 runs graded · all criteria met in 1 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

PivotTable "Sales by region" — Sum of Net Sales (USD), fiscal year 2026, fictional company Example Supplies Inc. Row Labels | Q1 | Q2 | Q3 | Q4 | Grand Total North | 48,200 | 51,900 | 47,300 | 55,600 | 203,000 South | 39,750 | 42,100 | 44,800 | 46,350 | 173,000 West | 61,400 | 58,200 | 63,900 | 66,500 | 250,000 (blank) | 1,150 | 0 | 3,400 | 950 | 5,500 Grand Total | 150,500 | 152,200 | 159,400 | 169,400 | 631,500

TestedOct 20, 2026Excel formulas

Monthly SUMIFS on an expense log where some dates are really text

Total one month of expenses with SUMIFS and catch the imported dates Excel stores as text, which SUMIFS silently leaves out.

ClaudeTested with claude-opus-5-5 · 5 of 5 criteria on average · 3 runs graded
You are an Excel helper. Using ONLY the expense log below:

1. Write a SUMIFS formula that totals all expenses dated in September 2026, and a second SUMIFS formula that totals only the Travel expenses in September 2026.
2. Look at the dates carefully. Tell me which rows (if any) these formulas will NOT count, and why.
3. State what each formula returns on this data as it is now, and what the correct September totals are once any problem rows are fixed.
4. Explain one way to fix the problem rows without retyping the whole column.

Keep the answer under 250 words. Do not change, drop or invent any amount.

[Paste the expense log with cell addresses (date, category, amount) and describe any cells that look odd, e.g. left-aligned dates.]
Test result · Oct 20, 2026
  • claude-opus-5-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

Sheet "Expenses", A1:C11 (header in row 1). Column A is formatted as Date. Imported from a card statement export. Row | A: Date | B: Category | C: Amount (USD) 2 | 2026-08-29 | Travel | 412.30 3 | 2026-09-02 | Software | 129.00 4 | 2026-09-05 | Travel | 86.40 5 | Sept 11 2026 | Meals | 57.80 6 | 2026-09-17 | Travel | 1,240.00 7 | 2026-09-23 | Office | 318.65 8 | 09/26/2026 | Travel | 94.20 9 | 2026-09-30 | Software | 49.99 10 | 2026-10-01 | Travel | 230.00 11 | 2026-10-03 | Meals | 41.10 What I see: A5 and A8 are left-aligned while the other dates are right-aligned. The formula bar for A8 shows "09/26/2026 " with a trailing space.

TestedOct 20, 2026Excel formulas

XLOOKUP client names into an invoice list, with a clean "Not found"

Pull client names from a second sheet into your invoice list, show a readable message instead of #N/A, and total one client's invoices.

ClaudeTested with claude-sonnet-5 · 5 of 5 criteria on average · 3 runs graded
You are an Excel helper for a small-business bookkeeper. Work ONLY from the two tables below.

1. Write ONE formula for cell D2 of the Invoices sheet that returns the client name for the client ID in B2 and can be filled down to D13. When the client ID is not in the Clients sheet, the cell must show the text "Not found" instead of an error.
2. List every invoice row (row number and invoice number) that will show "Not found".
3. Write a formula that returns the total amount of all invoices for client ID C-104, and state the result it returns on this data.
4. Explain in plain English, in at most 120 words, how the lookup formula works.
5. End with a short "Check before using" note for anything in the data a person should verify.

Do not invent client names, IDs or amounts that are not in the tables.

[Paste both tables with their sheet names and cell ranges (header row included). Replace real client names with placeholders.]
Test result · Oct 20, 2026
  • claude-opus-5-5: avg. 4.7 of 5 rubric criteria passed · 3 runs graded · all criteria met in 2 of 3 · judge: gpt-6-astra
  • claude-sonnet-5: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra
  • gpt-6-astra: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: claude-opus-5-5
  • claude-fable-5-1: avg. 4.7 of 5 rubric criteria passed · 3 runs graded · all criteria met in 2 of 3 · judge: gpt-6-astra
  • gemini-4-argon-medium: avg. 5 of 5 rubric criteria passed · 3 runs graded · all criteria met in 3 of 3 · judge: gpt-6-astra

Graded by an LLM from the other model family against a rubric written before the runs; a sample of verdicts re-checked by a separate AI editor agent. The two judges differ in strictness, so compare Claude vs GPT with caution. Not a professional review. How we test

Sample input used in the test (fictional)

Sheet "Invoices" (A1:C13, header in row 1): Row | A: Invoice | B: Client ID | C: Amount (USD) 2 | INV-1001 | C-101 | 1,250.00 3 | INV-1002 | C-104 | 980.50 4 | INV-1003 | C-102 | 4,350.00 5 | INV-1004 | C-101 | 615.25 6 | INV-1005 | C-105 | 2,200.00 7 | INV-1006 | C-118 | 1,740.00 8 | INV-1007 | C-104 | 3,125.75 9 | INV-1008 | C-103 | 890.00 10 | INV-1009 | C-105 | 1,505.40 11 | INV-1010 | C-102 | 760.00 12 | INV-1011 | C-104 | 2,049.75 13 | INV-1012 | C-103 | 1,310.60 Sheet "Clients" (A1:B6, header in row 1): Row | A: Client ID | B: Client name 2 | C-101 | Northwind Example Bakery 3 | C-102 | Harbor Example Dental 4 | C-103 | Pine Example Studio 5 | C-104 | Summit Example Plumbing 6 | C-105 | Lakeside Example Vet Column D of "Invoices" is empty and should hold the client name.