AI Text Analysis Tools

Free AI Text Analysis Tool — Sentiment, Keywords & Themes

Analyze any text with AI. Extract sentiment, keywords, themes, named entities, and topic patterns in seconds. Free online text analysis tool for researchers, marketers, and teams. No signup required.

Free to start. No credit card required. Supports Více než 100 jazyků.
Multiple Input Sources

Paste text directly, upload documents (PDF, DOCX, TXT, CSV), or transcribe audio and video files. Speak analyzes text from any source and connects results to your broader research workflow.

Zoom Seznamka Google Microsoft Teams Disk Google Outlook Zapier
Důvěryhodný více než 250 000 výzkumníků a týmů

What you can analyze with this free text analysis tool

Speak's AI text analyzer extracts structured insights from unstructured text. Paste survey responses, interview transcripts, customer reviews, research notes, or any text document and get instant results.

Analýza sentimentu

Detect whether text is positive, negative, or neutral. Speak's AI sentiment analysis goes beyond polarity to identify emotional tone, intensity, and mixed sentiment across paragraphs and documents. Ideal for analyzing qualitative research data, customer feedback, and survey responses.

Extrakce klíčových slov

Automatically identify the most important words and phrases in your text. Speak uses NLP to surface keywords by frequency and contextual relevance, helping you understand what topics dominate your data without reading every line. Visualize results with the generátor slovních mraků.

Rozpoznávání pojmenovaných entit

Extract people, organizations, locations, dates, and other entities from any text. NER is essential for mapping relationships in interview data, identifying key stakeholders in meeting transcripts, and structuring unstructured documents for further analysis.

Theme and topic detection

Discover recurring themes and topics across one document or an entire dataset. Speak clusters related concepts together so you can see the big picture without manual coding. Essential for thematic analysis in qualitative research and customer feedback programs.

Word frequency analysis

Count word occurrences and generate frequency distributions across your text data. Filter by part of speech, exclude stop words, and compare frequency patterns between documents or time periods. Export results or visualize them with built-in data visualization.

Custom AI prompts

Go beyond preset analysis types. Write custom AI prompts to extract exactly the insights you need from your text. Ask specific questions, generate summaries, classify responses by category, or run any text analysis task your research requires.

How to use the free text analysis tool

Add your text

Paste text directly into the analyzer, upload a document (PDF, DOCX, TXT, CSV), or import a transcript from audio or video. Vytvořte si bezplatný účet Speak to get started. No credit card required.

Choose your analysis type

Select from sentiment analysis, keyword extraction, named entity recognition, theme detection, or word frequency analysis. You can run multiple analysis types on the same text and compare results side by side.

Prohlédněte si poznatky generované umělou inteligencí

Speak processes your text and returns structured results in seconds. View sentiment scores, keyword lists, entity maps, topic clusters, and frequency charts. Use AI Chat to ask follow-up questions about your results.

Exportovat a sdílet

Export your analysis as CSV, PDF, or Word. Share results with team members through Speak's collaboration features. Build on your analysis by connecting text data to analýza zvuku a videa in the same workspace.

Who uses AI text analysis

Researchers, analysts, marketers, and teams across industries use Speak's text analysis tool to turn unstructured text into actionable insights. Here is how different teams put text analysis to work.

Kvalitativní výzkum

Analyze interview transcripts, focus group recordings, and open-ended survey responses. Speak's AI identifies themes, codes responses, and surfaces patterns across participants, replacing hours of manual coding with automated thematic analysis. Works seamlessly with Speak's qualitative coding software.

Analýza zpětné vazby od zákazníků

Import NPS comments, support tickets, product reviews, or survey responses. Speak detects sentiment trends, surfaces recurring complaints and praise, and identifies the topics customers care about most. Track how sentiment shifts over time across thousands of responses.

Academic text analysis

Perform discourse analysis, content analysis, or narrative analysis on research texts. Speak supports verbatim analysis with word frequency counts, concordance views, and entity extraction. Export structured data for statistical analysis in SPSS, R, or Excel.

Content optimization

Analyze your website copy, blog posts, or marketing content. Identify keyword gaps, measure topic coverage, and understand the themes your content communicates. Compare your text against competitor content to find opportunities for improvement.

Monitorování sociálních médií

Analyze social media comments, brand mentions, and community discussions. Extract sentiment, identify trending topics, and track how your audience talks about your brand, competitors, or industry. Process large volumes of text data in minutes.

Analýza schůzek a pohovorů

Transcribe meetings or interviews with Speak's automated transcription, then analyze the text for themes, sentiment, action items, and key topics. This end-to-end workflow from recording to analysis is unique to Speak.

What is text analysis and why it matters in 2026

Text analysis is the process of extracting meaningful information from unstructured text data. It encompasses a range of techniques, from simple word counting to advanced AI-powered methods like sentiment analysis, named entity recognition, and thematic coding. In 2026, text analysis has become essential for any organization that collects qualitative data at scale. Customer feedback, interview transcripts, survey responses, social media comments, and support tickets all contain valuable insights, but only if you have the tools to extract them systematically.

The volume of text data generated by organizations has grown dramatically. A single customer feedback program can produce thousands of open-ended responses per quarter. Research teams conducting qualitative studies may have hundreds of interview transcripts to analyze. Marketing teams monitor brand mentions across dozens of social platforms. Without automated text analysis, teams either ignore this data or spend weeks manually reading and coding it. AI-powered text analysis tools solve this by processing large volumes of text in minutes and surfacing structured, actionable insights.

Types of text analysis

Analýza sentimentu determines the emotional tone of text. Modern sentiment analysis goes beyond simple positive/negative classification. AI models can detect nuance, sarcasm, mixed sentiment, and emotional intensity. This makes it valuable for tracking customer satisfaction, monitoring brand perception, and measuring audience reaction to campaigns, product launches, or policy changes.

Tematická analýza identifies recurring themes and patterns across a body of text. In qualitative research, thematic analysis is one of the most widely used methods. AI text analysis tools like Mluvte automate the initial coding process by clustering related concepts and identifying theme hierarchies. Researchers can then refine, merge, or reclassify themes based on their domain expertise, combining the speed of AI with the judgment of human analysis.

Discourse analysis examines how language is used in context. It considers word choice, framing, power dynamics, and rhetorical strategies. While fully automated discourse analysis remains challenging, AI text analysis tools support the process by providing word frequency data, concordance views, and entity relationships that discourse analysts can interpret.

Obsahová analýza systematically categorizes and quantifies text content. It is commonly used in media studies, communications research, and market analysis. AI text analysis accelerates content analysis by automatically classifying text segments, counting category frequencies, and identifying patterns that would take human coders significantly longer to find.

Why AI text analysis beats manual coding

Manual text analysis has been the standard in qualitative research and business analysis for decades. A researcher reads each transcript, highlights relevant passages, assigns codes, and iteratively develops themes. This process produces high-quality results, but it does not scale. A team of two researchers might spend four to six weeks analyzing fifty interview transcripts manually. The same analysis with an AI text analysis tool takes hours, not weeks.

AI text analysis does not replace human judgment. It accelerates the mechanical parts of the process: initial coding, frequency counting, pattern detection, and entity extraction. Researchers still interpret results, validate themes, and make analytical decisions. The difference is that they start with a structured foundation instead of a blank page. This hybrid approach, where AI handles volume and humans handle nuance, is the standard for rigorous text analysis in 2026.

Consistency is another advantage. Human coders naturally drift in how they apply codes over long coding sessions. AI applies the same logic to every piece of text, producing more consistent initial results. Inter-coder reliability improves when both human and AI coding are compared and reconciled.

How Speak compares to other text analysis tools

The text analysis tool landscape includes specialized NLP platforms, general-purpose analytics tools, and research software. Each serves different needs and budgets.

MonkeyLearn offers no-code text analysis with pre-built models for sentiment, topic classification, and entity extraction. It is well-suited for business teams processing customer feedback. However, MonkeyLearn does not support audio or video input, and it lacks the qualitative research features that academic teams need.

Lexalytics provides enterprise-grade NLP with deep customization options. It excels at processing large volumes of text for brand monitoring and voice-of-customer programs. Lexalytics requires significant setup and is priced for enterprise budgets, making it less accessible for individual researchers or small teams.

MeaningCloud offers API-based text analysis with strong multilingual support. It is a good choice for developers building text analysis into custom applications. For non-technical users, the API-first approach adds complexity compared to tools with a visual interface.

ATLAS.ti is a dedicated qualitative data analysis (QDA) tool used extensively in academic research. It provides powerful manual coding features but limited AI automation. ATLAS.ti does not offer built-in transcription or the kind of automated NLP analysis that AI-native tools provide.

Mluvte occupies a unique position in this landscape. It is the only text analysis tool that connects directly to audio and video workflows. You can transcribe a recording, then immediately analyze the resulting text for sentiment, keywords, themes, and entities, all within the same platform. This end-to-end workflow from recording to analysis eliminates the file-export-import cycle that slows down teams using separate transcription and analysis tools. Speak also supports 100+ languages, multi-model AI (Claude, Gemini, GPT), custom AI prompts, and team collaboration features that make it suitable for both individual researchers and enterprise teams.

Getting started with text analysis

The fastest way to start analyzing text is to paste a sample directly into Speak's free text analysis tool. No signup is required for basic analysis. For ongoing projects, create a free account to save results, organize data into folders, collaborate with team members, and connect text analysis to audio and video workflows. Speak's cenové plány scale from individual researchers to enterprise teams with custom AI prompts, advanced analytics, and API access.

Teams trust Speak for text analysis

★★★★★ 4.9 na G2

"Šli jsme z týdny kvalitativní analýzy jeden den. Snadné použití, snadná implementace a podpora byla neuvěřitelná."

Connor H. Datový analytik, recenze G2

"Vysoká přesnost, vícejazyčná podpora a propracovaná analýza. Integrace s…“ Google a Zapier usnadňují zjednodušení všeho."

Volker B. Provozní ředitel, recenze G2

"The text analysis features are outstanding. Sentiment, keywords, and themes extracted automatically from our interview transcripts."

Ted H. Majitel firmy, recenze G2

"Používám Speak pro Francouzština a angličtina for text analysis of interview data. It saves time and increases the precision of my reports."

François L. Finanční poradce, recenze G2

"It transcribes, analyzes, and summarizes. I don't miss important patterns and it saves me a ton of time."

Ercan T. Rozvoj podnikání, recenze G2

"Easy to use, and I can actually get in contact with the team behind the product. Valuable to speak to a skutečný člověk."

Markus B. Lékařský ředitel, G2 review

Často kladené otázky

Common questions about text analysis tools, AI-powered text analytics, and how Speak works.

What is a text analysis tool?

A text analysis tool is software that processes unstructured text data and extracts structured insights. This includes sentiment analysis (detecting positive, negative, or neutral tone), keyword extraction (identifying important words and phrases), named entity recognition (finding people, places, and organizations), and theme detection (discovering recurring topics). AI-powered text analysis tools like Speak automate these processes using natural language processing and machine learning, delivering results in seconds rather than hours.

Is Speak's text analysis tool free?

Yes. You can start analyzing text with Speak for free. No credit card or signup is required for basic text analysis. For ongoing projects with larger datasets, team collaboration, custom AI prompts, and advanced export options, Speak offers paid plans starting at affordable rates. Visit the cenová stránka pro podrobnosti.

What types of text can I analyze?

Speak analyzes any text data. Common inputs include interview transcripts, survey responses, customer reviews, NPS comments, support tickets, social media posts, research papers, meeting notes, and website content. You can paste text directly, upload documents (PDF, DOCX, TXT, CSV), or import transcripts from audio and video files processed through Speak's transcription engine.

How is AI text analysis different from manual coding?

Manual coding involves a human researcher reading each piece of text, assigning codes, and developing themes iteratively. It produces high-quality results but is time-consuming and does not scale well. AI text analysis automates the initial coding, pattern detection, and frequency analysis, producing results in minutes instead of weeks. Most researchers use a hybrid approach: AI handles volume and consistency, while humans validate results and apply domain expertise.

What languages does Speak support for text analysis?

Speak supports text analysis in over 100 languages. Sentiment analysis, keyword extraction, named entity recognition, and theme detection all work across supported languages. This makes Speak ideal for multilingual research, international customer feedback programs, and global brand monitoring.

Can I analyze audio and video with Speak?

Yes. Speak is the only text analysis tool that connects directly to audio and video workflows. Upload a recording or connect Speak to Zoom, Teams, or Google Meet. Speak transcribes the audio using automatizovaný přepis, then lets you run text analysis on the resulting transcript. This end-to-end workflow eliminates the need to export and import files between separate tools.

How does Speak compare to MonkeyLearn or Lexalytics?

MonkeyLearn and Lexalytics are dedicated NLP platforms focused on text classification and entity extraction. Speak offers similar AI text analysis capabilities but adds audio and video transcription, qualitative coding features, multi-model AI (Claude, Gemini, GPT), and team collaboration. If your workflow includes analyzing spoken data alongside text, Speak provides a more complete solution.

What is sentiment analysis and how does it work?

Sentiment analysis uses AI to determine the emotional tone of text. It classifies text as positive, negative, or neutral and can detect nuance like mixed sentiment or varying intensity. Speak's sentiment analysis processes each sentence or paragraph, providing both an overall sentiment score and granular, passage-level results. It is commonly used for analyzing customer feedback, product reviews, survey responses, and social media commentary.

Can I use custom prompts for text analysis?

Yes. Speak supports custom AI prompts, letting you define exactly what you want to extract from your text. You can ask specific research questions, classify responses by custom categories, generate summaries in a particular format, or run any analysis task that fits your workflow. Custom prompts are powered by multi-model AI including Claude, Gemini, and GPT.

How do I export text analysis results?

Speak lets you export analysis results in multiple formats including CSV, PDF, and Word. Exported data includes sentiment scores, keyword lists, entity extractions, theme clusters, and frequency data. You can also share results with team members directly within Speak's collaboration workspace, or connect to other tools via Zapier integration.

Stop reading manually. Start analyzing with AI.

Paste text, upload documents, or transcribe recordings. Speak extracts sentiment, keywords, themes, and entities in seconds. The only text analysis tool that connects to your audio and video workflow.

Start analyzing free

Create a free account, paste your text or upload a document, and get AI-powered analysis in seconds. Sentiment, keywords, themes, and entities. No credit card required.

Pracujte s naším týmem

Need help setting up text analysis workflows for your research team or organization? We help teams configure custom prompts, organize datasets, and build repeatable analysis pipelines. Book a consult to get started.


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