The premier toolkit for modern legal practice

Deep Research for Law

A research and matter analytics platform

Use when: You're researching complex legal topics across domains.
  • Deep research built by and for attorneys
  • Backed by millions of cases, laws, regulations, and rules
  • Reduce hallucinations with grounding, citation check, and stare decisis analysis
  • Avoid errors with lawyer-in-the-loop structured source verification
  • Save your work as .pdf or .docx
Use when: You're sifting through hundreds of files and manually extracting data.
  • Upload batches of documents, audio, and images
  • Supports large files (200MB)
  • Locate relevant files using tags and plain english search
  • Generate chronologies and extract data into tables
  • Multi-file Q&A with page level citations
Use when: You're looking to fill an existing client pipeline or test a new practice area.
  • Pre-screened, delivered to your account, cancel any time
  • 50+ practice areas
  • Zip code targeting
  • Refunds for low quality leads
  • Enriched Legal Leads available on request

Featured on

Appreciated by

"As the founder of Lock In Enterprises and the creator of the Lock In Law series, I focus on making the law clear, accessible, and actionable for professionals, entrepreneurs, and everyday people."

"Counsel Stack has been a key part of that mission and the driving force to my ability to provide succinct information in my series, backed by accurate law."

"In my series I use Counsel Stack to conduct reliable legal research across Pennsylvania and federal laws, support my scriptwriting process for educational video content, and translate complex legal topics into clear, trustworthy insights my audience can use. Whether I’m filming an episode on estate planning or preparing a post on business formation, Counsel Stack helps me move faster, stay accurate, and build with confidence."

- Founder, Legal Content Creator
"[Counsel Stack] replaced my existing management software and became an invaluable tool for research."

"Rather than replacing human work, it empowered my small team, which includes just one other attorney, a paralegal, and an intern."

"It makes you exponentially better"

- Founder, Criminal Defense Firm
"I can give it an entire case file and say 'What patterns do you notice? Summarize it for me,' and it can do that."

"The alternative is that I spend half my day doing it, and I might not find anything."

- Founder, Estates and Trusts Firm

COUNSEL STACK SUITE

Launch your practice without sacrificing work-life balance.

Legal research, review, leads, forms, storage, retrieval, and timekeeping - in one platform - accessible online and via email

From prospect to precedent.

As the legal practice industry consolidates, Counsel Stack provides operational support to startup law firms, ambitious solo practitioners, and legal plans.

Leads

Research

Drafting

File Storage

Retrieval

Chronologies

Case Briefs

Stare Decisis

Form Auto-Fill

Timekeeping

Deep Research for U.S. Law

Ask a plain-English question—or upload full briefs. Our engine searches federal and state legal databases and drafts a structured answer with inline cites. Label citations as “verified” to build an audit trail against hallucinations.

Enriched Legal Leads

Never face an empty client pipeline again with exclusive and targeted legal leads. Learn more.

File Storage, Retrieval, and Review

Upload batches of documents, audio, and images. Find files, extract insights, and generate chronologies.

Enterprise-Grade Security

Counsel Stack has secured a positive SOC 2 Type 1 attestation.

LEGAL RESEARCH

As a legal professional, you remain in control.

Get answers in seconds, view authoritative sources in one click, and track source verification status.

Structured Citation Verification

Easily verify citations say what they're purported to say. Counsel Stack's legal AI agents pull from hundreds of disparate legal data sources, surfacing the most relevant items for your review.

We also provide structured citation checks and verification guardrails - allowing you, the subject matter expert, to step in and critical points. You can export and save these records in your preferred format.

DOCUMENT REVIEW

Connect external research to your internal knowledge base.

Upload documents, forms, images, and audio files. We'll parse and tag them for easy retrieval.

Upload unruly files, we'll handle the rest.

Find your documents with plain english commands.

Select multiple files for combined analysis.

Augmented legal drafting based on your knowledge base.

We help you can gather key details from multiple files at once.

Upload your files, extract data, and draft documents with relevant context from your internal knowledge base.

Generate chronologies in seconds.

Counsel Stack can generate timelines from large files.

For example here's a 1081 page, 189MB, non-OCR file we converted into a timeline with more than 50 entries.

Legal leads for attorneys

Fill your client pipeline with targeted legal leads.

50+ practice areas
Zip code targeting
Cancel any time
$1,500 minimum

Complete the form and we'll send you a price quote in 24-48 hours.

CounselStack Form Embed

Legal Lead Pricing

See below to learn more about a specific practice area. Prices subject to change. Complete the form above to request a quote.

Security

Legal AI

Frequently asked questions

Common questions about language models in legal practice
Do you guarantee no hallucinations?
No AI can promise that. Instead, we surface relevant sources and help attorneys quickly verify each citation before exporting.
Why should lawyers care about language models?
Lawyers should be interested in language models because they offer significant advantages in legal research, align with ABA guidance on maintaining competence, and enhance cost efficiency. These models can automate and streamline many routine tasks, freeing lawyers to focus on more complex aspects of their cases.
What is the ABA's stance on AI and legal practice?
The ABA has adopted resolutions 604, 608, 609, and 610 emphasizing responsible AI development and use, promoting ethical, transparent, and accountable deployment of AI in the legal sector. These resolutions also focus on enhanced cybersecurity, guidelines for organizations engaging in AI, and integrating cybersecurity education into law school curricula.
Must I disclose my use of Counsel Stack to clients or courts?
We recommend attorneys using our platform follow the rules of professional conduct, standing orders, and other laws or regulations that govern the profession in their respective jurisdiction and practice area. But as a software company we aren't in a position to prescribe legal advice or a specific course of action. Some jurisdictions require that sort of disclosure, others don't.
How do large language models work?
Language models are next word predictors. Large language models like GPT-4, Llama 2, and Mistral utilize training data, attention, and transformers. These mechanisms help the model capture nuanced semantic relationships between words and sentences, enabling them to generate coherent text.
How can litigators benefit from using language models?
Litigators can benefit significantly from language models by leveraging them for efficient legal research, strategic development, jury analysis, and enhancing overall litigation planning. These tools can streamline various aspects of legal practice, making processes more efficient and data-driven.
How do language models increase capital efficiency in legal practice?
Properly developed language models enhance capital efficiency in legal practice by accelerating tasks and making sophisticated legal analysis more accessible. This is particularly beneficial for less experienced practitioners, leveling the playing field in terms of resource availability and expertise.
How can response quality be improved when using language models in legal contexts?
Enhancing response quality with language models in legal contexts involves prompt engineering and grounding techniques, which provide the language model with necessary contextual information. This approach ensures clear, context-aware, and accurate language model responses, effectively utilizing the model's reasoning capabilities over the provided knowledge.
What is prompt engineering in the context of language models and law?
Prompt engineering involves designing specific queries or instructions to guide AI models towards generating more accurate and contextually appropriate responses. It's a critical skill for legal professionals using AI, ensuring that the technology aligns with the specific needs and nuances of legal cases.
What are some basic prompting techniques to improve response quality in language models
A few basic techniques to improve response quality in language models include (1) specifying clear task formats and tone, (2) encouraging step-by-step thinking through a chain of thought approach, and (3) persona prompting. These techniques help in eliciting more precise and relevant responses.
What is "grounding" a language model?
Grounding a language model is connecting it to a reliable datasource. Grounding with Retrieval Augmented Generation (RAG) helps mitigate hallucinations while enhancing the model's accuracy. This process involves providing the language model with a rich context or specific information to base its responses on, leading to more accurate and reliable outputs.
What are hyper parameters in language models, and how do they change outputs?
Hyperparameters in language models, such as temperature, token window, and penalties, significantly influence the model's outputs. The temperature setting affects the creativity or randomness of the response, the token window determines the scope of the output, and penalties help prevent repetitive phrases or redundant content. Adjusting these settings allows you to tailor the language model's responses, ensuring they are suitable for the specific requirements of brainstorming, legal research, drafting, or analysis.