Table of contents

1. Introduction: the evolution of AI in document review.

2. All-in-One Tools for Document Review

   • ChatLabs

   • Perplexity

3. Best AI Document Summarizers

   • Bito.ai

   • ChatGPT

4. PDF AI Readers

   • Adobe Acrobat AI

   • Kami AI

5. How to Compare AI Models for Document Review

6. Conclusion: What AI Is Best at Reviewing Files

AI evolution made document review much more simple and efficient - AI tools can now analyze, summarize, and compare PDFs, spreadsheets, images, and text files. Plus, they do this at an incredible speed. But with so many options, how does one identify which AI is the best for reviewing files? In this article, we’ll explore the top AI tools that can read and analyze documents, including PDFs, code files, and more.

Let’s dive into some of the best AI-powered tools for reviewing documents, from ChatLabs to other specialized AI helpers.

All-in-One Tools for Document Review

ChatLabs: A Powerful All-In-One Platform

When it comes to reviewing all the kinds of file types, ChatLabs stands out as one of the most useful, simple and efficient options. This platform supports a huge variety of diverse AI models, including GPT-4o, Claude, Mistral, and LLaMA, among others. This allows you to compare how different models work with numerous file formats like PDFs, DOCs, images, TXT files, and so much more. All inside one single chatbot!

Key Features of ChatLabs:

• Multiple file types support (PDF, TXT, DOC, CSV, XLS, images, etc.);

• 100+ AI models gathered in one platform for reviewing and comparing files;

• Advanced document summarization and insight generation;

• Easy document management and collaborative access in a single platform.

Example Use Case:

Imagine that you have a massive PDF report. ChatLabs can summarize it with one model, like GPT-4o. Then, it can generate key insights with another, such as Claude, Gemini or LLaMA - all within the same tool. You have power to analyze large datasets by uploading Excel or CSV files - this makes it perfect for both text and data-heavy document reviews.

Perplexity: An AI App That Surfs the Web and Reads Files

Another AI platform making waves in the document review space is Perplexity - AI tool particularly good at reading and analyzing text-heavy files like reports, research papers, and contracts. Unlike many other AIs, Perplexity handles complex language constructions, making it a perfect choice for legal or academic documents.

Perplexity also supports many different formats such as DOC, PDF, and TXT, which makes it a top choice for pros who want to review important documents quickly, but without missing key details.

Why Perplexity Stands Out:

• It handles complex, heavy documents like contracts and research papers;

• It’s highly efficient at summarizing legal and academic writings;

• It works with multiple file formats like DOC and TXT, besides PDF.

Which AI Can Analyze Files Like Perplexity?

If you are looking specifically for an AI that can read files similarly to Perplexity, other strong competitors are ChatGPT and Claude AI. These models are highly proficient at reading and summing-up documents while providing deep insights into the text. They’re also effective in handling various document types, from PDFs to spreadsheets.

Best AI Document Summarizers in 2025

Summarizing heavy documents is one of the most popular ways of applying AI. The following AI tools offer excellent summarization features, saving you hours of manual work.

Bito.ai: AI-Powered Code Review and Summarization

Bito.ai is a must-have instrument for software developers, its key focus is code review. However, it’s not the only way of using it - it can also analyze technical documentation, such as API docs, specs, and large codebases. Bito.ai uses AI to highlight coding errors, suggest improvements, and summarize large chunks of code. It’s a perfect tool for software engineering teams who need to review large codebases efficiently.

Bito.ai can read and analyze code files such as JSON and Python scripts, as well as entire repositories. Its integration with GitHub helps you incorporate AI into your code review workflow seamlessly.

Benefits of Using Bito for Code Review:

• Supports multiple programming languages and file formats (JSON, Python, etc.);

• Precisely highlights coding errors and suggests improvements;

• Summarizes large code files for easy understanding.

ChatGPT: Flexible Document Summarization

If you’re seeking a convenient AI document summarizer, ChatGPT comes as an excellent option. Its strength lies in processing various types of files - from academic research papers and legal contracts to financial reports and more. With ChatGPT, you can also utilize various file formats - input large text or upload PDFs and spreadsheets. The AI will generate concise summaries in seconds for all.

Another advantage of ChatGPT is its conversational style, which makes summaries easy to understand, even for people who are not quite familiar with the content's domain.

Key Features of ChatGPT for Document Review:

• Summarizes diverse file types (PDFs, DOCs, spreadsheets);

• Works with complex professional writing, such as legal, academic, and financial documents;

• Provides clear and easy-to-understand summaries.

Link: https://chat.openai.com

AI Software That Analyzes PDFs: Reviewing and Summarizing

There are also a few other AI tools specifically designed for reviewing certain types of documents, such as legal contracts and research papers. ai software that analyzes pdfsThese tools are an excellent choice for working with particular file formats and offer additional features tailored to your specific needs.

Adobe Acrobat AI and Kami AI

If you often work with PDFs, a dedicated PDF AI reader might be the right tool for you. These readers are common for reviewing contracts, research papers, and even electronic books. Most of PDF readers can summarize content as well as annotate, highlight, and extract key info.

Tools like Adobe Acrobat AI and Kami AI are some of the best PDF AI readers in 2025. These tools will come in handy for reviewing long, complex PDFs and extracting essential information.

Key Benefits of AI PDF Readers:

• Extracts key insights from long, complex PDF docs;

• Allows annotations and highlights important sections;

• Summarizes content for easier understanding.

How to Compare AI Models for Document Review

AI document review tools are a fantastic innovation. They let you compare different AI models and find the best tool for your specific needs. ChatLabs, for example, lets you experiment with over a 100 of AI models in one platform, giving you the flexibility to compare their performance when it comes to reviewing various document types.

All of their models have their strengths and weaknesses - some are better at handling text-based files, while others standout at working with heavy data files like Excel or CSV files. Comparing these models lets you making more informed decisions about which AI model is the best for analyzing your specific documents.

Conclusion: What AI Is Best at Reviewing Files

In 2025, AI tools for document review are more powerful than ever. Whether you're working with text files, PDFs, spreadsheets, or code - be sure that there's an AI tool that will make your efforts more efficient. ChatLabs is a standout choice, allowing you to use multiple AI models like GPT-4o and o1, Claude 3, and Gemini to handle various file types, making it a perfect solution for document analysis.

For text-heavy documents, use Perplexity or ChatGPT. They read and summarize large legal, academic, and financial texts rather well. For developers, Bito.ai is an exceptional tool for reviewing and summarizing code files. Also, if you focus on PDFs, PDF AI readers like Adobe Acrobat AI have special features for this format.

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