Best Natural Language Processing Software

Compare the Top Natural Language Processing Software as of February 2026

What is Natural Language Processing Software?

Natural language processing (NLP) software analyzes both written and spoken human languages and interprets them for translation, deep learning and automation purposes. Natural language processing software may also include natural language understanding (NLU) capabilities. Compare and read user reviews of the best Natural Language Processing software currently available using the table below. This list is updated regularly.

  • 1
    ChatGPT

    ChatGPT

    OpenAI

    ChatGPT is an AI-powered conversational assistant developed by OpenAI that helps users with writing, learning, brainstorming, coding, and more. It is free to use with easy access via web and apps on multiple devices. Users can interact through typing or voice to get answers, generate creative content, summarize information, and automate tasks. The platform supports various use cases, from casual questions to complex research and coding help. ChatGPT offers multiple subscription plans, including Free, Plus, and Pro, with increasing access to advanced AI models and features. It is designed to boost productivity and creativity for individuals, students, professionals, and developers alike.
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    Starting Price: Free
  • 2
    IBM watsonx Assistant
    IBM watsonx Assistant (Formerly Watson Assistant) is a market-leading enterprise conversational AI platform that allows you to build intelligent virtual and voice assistants that can provide customers with fast, consistent and accurate answers across any messaging platform, application, device or channel. Using artificial intelligence and large language models, watsonx Assistant learns from customer conversations, improving its ability to resolve issues the first time while removing the frustration of long wait times, tedious searches and unhelpful chatbots. Most chatbots try to mimic human interactions, frustrating customers when a misunderstanding arises. IBM watsonx Assistant is more than a chatbot. It knows when to search for an answer from a knowledge base, when to ask for clarity and when to direct users to a human agent for more assistance. And since it can be deployed in any cloud or on-premises environment – smarter AI is finally available wherever you need it.
    Starting Price: $140 per month
  • 3
    Cohere

    Cohere

    Cohere AI

    Cohere is an enterprise AI platform that enables developers and businesses to build powerful language-based applications. Specializing in large language models (LLMs), Cohere provides solutions for text generation, summarization, and semantic search. Their model offerings include the Command family for high-performance language tasks and Aya Expanse for multilingual applications across 23 languages. Focused on security and customization, Cohere allows flexible deployment across major cloud providers, private cloud environments, or on-premises setups to meet diverse enterprise needs. The company collaborates with industry leaders like Oracle and Salesforce to integrate generative AI into business applications, improving automation and customer engagement. Additionally, Cohere For AI, their research lab, advances machine learning through open-source projects and a global research community.
    Starting Price: Free
  • 4
    ChatSonic

    ChatSonic

    Writesonic

    A revolutionary AI like ChatGPT - ChatSonic, the conversational AI chatbot addresses the limitations of ChatGPT, turning out to be the best Chat GPT alternative. Improving upon the limitations of Chat GPT and giving conversational AI wings with ChatSonic. ChatSonic is trained and powered by ‘Google Search’ to chat with you on current events and trending topics in real-time. ChatSonic - ChatGPT alternative can help generate stunning digital AI artwork for your social media posts and digital campaigns. A personal assistant you can customize and use whether you are solving a math problem, preparing for an interview, sorting relationship problems or helping you stay fit. Add the ChatSonic ChatGPT Chrome extension to get content suggestions from anywhere on the internet. ChatSonic understands voice commands and responds just like Siri / Google Assistant.
    Starting Price: $12.67 per month
  • 5
    SheetGPT

    SheetGPT

    SheetGPT

    SheetGPT is the easiest way to integrate OpenAI's GPT natural language processing directly within your Google Sheets™. All users receive their first 50,000 tokens of GPT usage for free. This is roughly equivalent to two dozen copies of the US Declaration of Independence worth of text. Simply install the SheetGPT add-on from the Google Marketplace to start using GPT in your Google Sheets. When you reach the free trial usage limit, you can come here to upgrade. You can always contact Support if you have questions about our subscriptions or billing issues.
    Starting Price: $9 per month
  • 6
    ChatGPT Plus
    We’ve trained a model called ChatGPT which interacts in a conversational way. The dialogue format makes it possible for ChatGPT to answer followup questions, admit its mistakes, challenge incorrect premises, and reject inappropriate requests. ChatGPT is a sibling model to InstructGPT, which is trained to follow an instruction in a prompt and provide a detailed response. ChatGPT Plus is a subscription plan for ChatGPT a conversational AI. ChatGPT Plus costs $20/month, and subscribers will receive a number of benefits: - General access to ChatGPT, even during peak times - Faster response times - GPT-4 access - ChatGPT plugins - Web-browsing with ChatGPT - Priority access to new features and improvements ChatGPT Plus is available to customers in the United States, and we will begin the process of inviting people from our waitlist over the coming weeks. We plan to expand access and support to additional countries and regions soon.
    Starting Price: $20 per month
  • 7
    ChatGPT Pro
    As AI becomes more advanced, it will solve increasingly complex and critical problems. It also takes significantly more compute to power these capabilities. ChatGPT Pro is a $200 monthly plan that enables scaled access to the best of OpenAI’s models and tools. This plan includes unlimited access to our smartest model, OpenAI o1, as well as to o1-mini, GPT-4o, and Advanced Voice. It also includes o1 pro mode, a version of o1 that uses more compute to think harder and provide even better answers to the hardest problems. In the future, we expect to add more powerful, compute-intensive productivity features to this plan. ChatGPT Pro provides access to a version of our most intelligent model that thinks longer for the most reliable responses. In evaluations from external expert testers, o1 pro mode produces more reliably accurate and comprehensive responses, especially in areas like data science, programming, and case law analysis.
    Starting Price: $200/month
  • 8
    Claude Pro

    Claude Pro

    Anthropic

    Claude Pro is an advanced large language model designed to handle complex tasks while maintaining a friendly, accessible demeanor. Trained on extensive, high-quality data, it excels at understanding context, interpreting subtle nuances, and producing well-structured, coherent responses across a wide range of topics. By leveraging robust reasoning capabilities and a refined knowledge base, Claude Pro can draft detailed reports, compose creative content, summarize lengthy documents, and even assist in coding tasks. Its adaptive algorithms continuously improve its ability to learn from feedback, ensuring that its output remains accurate, reliable, and helpful. Whether serving professionals seeking expert support or individuals looking for quick, informative answers, Claude Pro delivers a versatile and productive conversational experience.
    Starting Price: $18/month
  • 9
    Claude Max

    Claude Max

    Anthropic

    The Max Plan from Anthropic's Claude platform is designed for users who require extended access and higher usage limits for their AI-powered collaboration. Ideal for frequent and demanding tasks, the Max Plan offers up to 20 times higher usage than the standard Pro plan. With flexible usage levels, users can select the plan that fits their needs—whether they need additional usage for complex data, large documents, or extended conversations. The Max Plan also includes priority access to new features and models, ensuring users always have the latest tools at their disposal.
    Starting Price: $100/month
  • 10
    ChatGPT Enterprise
    Enterprise-grade security & privacy and the most powerful version of ChatGPT yet. 1. Customer prompts or data are not used for training models 2. Data encryption at rest (AES-256) and in transit (TLS 1.2+) 3. SOC 2 compliant 4. Dedicated admin console and easy bulk member management 5. SSO and Domain Verification 6. Analytics dashboard to understand usage 7. Unlimited, high-speed access to GPT-4 and Advanced Data Analysis* 8. 32k token context windows for 4X longer inputs and memory 9. Shareable chat templates for your company to collaborate
    Starting Price: $60/user/month
  • 11
    ChaturGPT

    ChaturGPT

    Mystic Labs

    Upload any document, like textbook, code documentation, bank statements etc and get answers to all your questions w.r.t that document. You can ask for the summary of the doc or some specific information which you require. Chatur formats the answer according to the doc and makes it easier to get answers without going through the doc. Wait for Chatur to find the best possible answers to your question from the doc. Now you are one step closer to excelling in your work without much effort! Ask questions from all kinds of PDFs. Be it Code Documentation, Bank Statements or Legal Documents we've got you covered.
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