ChatGPT

OpenAI's conversational assistente IA powered by GPT-4o, capable of natural dialogue, creazione di contenuti, coding, data analysis, and generazione di immagini.

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Visite mensili

5.4B

Utenti attivi settimanali

900M

Azienda

OpenAI

Lancio

November 2022

Piano gratuito

Yes

App mobili

iOS, Android, Desktop

Introduzione

ChatGPT is a generative AI chatbot developed by OpenAI, launched in November 2022 and quickly becoming the fastest-growing consumer application in history. Built on the GPT (Generative Pre-trained Transformer) family of large language models, ChatGPT understands context, engages in natural multi-turn conversations, and generates human-like responses across an enormous range of tasks including writing, coding, analysis, and creative work.

The system is fine-tuned using Reinforcement Learning from Human Feedback (RLHF), where human trainers rank responses to guide the AI toward more helpful, truthful, and harmless outputs. With each model generation -- from GPT-3.5 to GPT-4o and the o-series reasoning models -- ChatGPT has grown substantially more capable, now handling multimodal inputs (text, images, audio, files) and producing richer, more accurate outputs than ever before.

ChatGPT serves hundreds of millions of users weekly as a versatile assistant for answering questions, writing content, coding, analyzing data, generating images with DALL-E, browsing the web for current information, and much more. Its ecosystem of GPT Personalizzati, plugins, and integraziones makes it adaptable to virtually any flusso di lavoro, whether you are a student researching a paper, a developer debugging code, a marketer drafting campaigns, or a business leader summarizing reports.

Pro

+Most versatile assistente IA with the broadest feature set
+Excellent at coding, writing, and data analysis tasks
+Regular updates with new models and capabilities
+Large ecosystem of GPT Personalizzati and third-party integraziones
+Multimodal: handles text, images, audio, and file uploads
+Strong multilingual support across 50+ languages
+Available on web, iOS, Android, macOS, and Windows
+Generous piano gratuito for basic everyday usage

Contro

-Can hallucinate incorrect information confidently
-Knowledge cutoff unless using web browsing
-Piano gratuito has significant usage limits during peak hours
-Pro plan at $200/month is expensive for individual users
-Response quality can vary between conversations
-May refuse harmless requests due to safety filters

Funzionalità principali

Conversazione Naturale

Understands context across multi-turn dialogues, handles follow-up questions, admits mistakes, and maintains coherent long conversations with memory of past interactions

GPT-4o Multimodal

Latest flagship model processes text, images, and audio natively with in tempo reale interaction capabilities, delivering faster responses and stronger multilingual performance

Analisi Avanzata dei Dati

Upload CSV, Excel, PDF files and get Python-powered analysis with charts, statistics, trend detection, and actionable insights -- all within the chat interface

DALL-E Generazione di Immagini

Create and edit images using linguaggio naturale descriptions, with iterative refinement tools for adjusting composition, style, and details

Navigazione Web

Search the internet for current information beyond training data, with source citations and the ability to summarize articles, compare sources, and track in tempo reale events

GPT Personalizzati

Create specialized assistente IAs with istruzioni personalizzate, file di conoscenza, and API integraziones. Share publicly via the GPT Store or keep private for personal use

Interprete di Codice

Write, execute, and debug Python code in a secure sandbox for complex calculations, data transformations, file conversions, and automation tasks

Modalità Voce

Natural voice conversations with in tempo reale speech input and output on mobile and desktop, including Advanced Voice with vision and screen-sharing capabilities

Canvas Editor

Collaborative workspace for editing text and code side-by-side with ChatGPT, enabling targeted modifications, inline suggestions, and version tracking

Ricerca Approfondita

Multi-step autonomous research across diverse web sources, producing comprehensive cited reports with synthesis of conflicting information

Chi dovrebbe usarlo

Scrittura e Editing di Contenuti

Draft blog posts, emails, marketing copy, social media content, and technical documentation. ChatGPT helps brainstorm ideas, create outlines, write first drafts, and refine tone and style. It can adapt to voce del brand guidelines and produce content in dozens of languages.

Creatori di contenuti, marketer, copywriter, and professionisti aziendali

Assistenza allo Sviluppo Software

Generate code in dozens of programming languages, debug errors, explain complex codebases, write tests, and refactor for performance. The Interprete di Codice executes Python in a sandbox for data processing, while Canvas mode enables side-by-side code editing.

Sviluppatori software, ingegneri dei dati, and team tecnici

Ricerca e Apprendimento

Summarize academic papers, explain complex topics at any level, compare perspectives on a subject, and create guida allo studios or flashcard. Ricerca Approfondita mode autonomously explores dozens of sources to produce comprehensive reports with citations.

Studenti, ricercatori, educatori, and lifelong learners

Analisi Aziendale e Supporto Decisionale

Upload spreadsheets and financial data for trend analysis, forecasting, and visualization. ChatGPT can create charts, run statistical models, compare scenarios, and generate executive summaries from raw data.

Analisti aziendali, dirigenti, consulenti, and professionisti finanziari

Piani tariffari

Free

$0/per sempre

GPT-4o mini with limited GPT-4o (~10 messages/5hrs)
Basic web browsing and generazione di immagini
Limited data analysis and file uploads
Standard voice mode
Access to GPT Store
Slower response during peak times

Consigliato

Plus

$20/mese

GPT-4o (80 messages/3hrs), GPT-4 (40 messages/3hrs)
o3 reasoning model (50/week), o4-mini (150/day)
Advanced Voice with vision and screen sharing
DALL-E generazione di immagini (higher limits)
Analisi Avanzata dei Dati (full access)
Create and publish custom GPTs
Early access to new features
Limited Sora generazione video

Team

$25/utente/mese

Minimum 2 users, billed annually

All Plus features with higher limits
GPT-4o (160 messages/3hrs)
Dedicated team workspace
Share GPTs within workspace
Admin console for user management
Workspace data NOT used for training

Enterprise

Custom/contattare le vendite

Illimitato high-speed GPT-4o and GPT-4
Longer finestra di contestos (128K+)
SOC 2 Type 2 compliance
SSO, SCIM, domain verification
Advanced admin and analytics
Dedicated support and onboarding
Data never used for training

Pro

$200/mese

Illimitato* GPT-4o and reasoning models
o1 pro mode (higher compute for hard problems)
Extended voice with video/screen sharing
Research previews (Operator, Sora)
Highest priorità access
Best for ricercatori and power users

Confronto

ChatGPT vs Gemini

ChatGPT and Gemini are the two most widely used assistente IAs. ChatGPT offers a more mature feature set with GPT Personalizzati, a large plugin ecosystem, and strong coding capabilities. Gemini counters with a much larger finestra di contesto (up to 2M tokens vs 128K), native Google Search integrazione for in tempo reale information, and deep Google Workspace integrazione.

ChatGPT eccelle in

+More mature ecosystem with GPT Personalizzati and plugin marketplace
+Stronger coding and data analysis capabilities
+More polished user experience across platforms
+DALL-E generazione di immagini built in

Gemini eccelle in

+Gemini offers much larger finestra di contestos (2M vs 128K tokens)
+Gemini has native Google Search and Workspace integrazione
+Gemini Flash models offer better price-performance for API users
+Gemini provides free access to more capable models

ChatGPT vs Claude

ChatGPT and Claude compete closely on reasoning and writing quality. ChatGPT has broader consumer features including generazione di immagini, voice mode, and a larger third-party ecosystem. Claude excels at nuanced analysis, long-context tasks with near-perfect recall, and lower allucinazione rates thanks to its Constitutional AI approach.

ChatGPT eccelle in

+Built-in generazione di immagini via DALL-E
+Larger ecosystem of GPT Personalizzati and integraziones
+Advanced Voice mode with in tempo reale conversation
+More consumer-friendly features (Canvas, Ricerca Approfondita)

Claude eccelle in

+Claude offers larger standard finestra di contesto (200K vs 128K tokens)
+Claude has lower allucinazione rates on factual tasks
+Claude excels at long-form analysis and nuanced writing
+Claude Artifacts provide interactive code previews

1. Per Iniziare

Visit chat.openai.com or download the iOS/Android app. Create a free account or sign in with Google/Microsoft/Apple. Start chatting immediately in the input bar at the bottom. The interface is straightforward: type your message, press Enter, and ChatGPT responds. Your conversations are saved in the sidebar for easy access later. You can start new chats for different topics to keep context clean. Free users get access to GPT-4o mini for everyday tasks and limited GPT-4o access for more demanding questions. Upgrade to Plus for higher limits and advanced features.

2. Effective Prompting

Be specific and clear: Instead of "Tell me about dogs," try "List 5 dog breeds suitable for apartment living with their key traits." Provide context: "Explain photosynthesis to a 10th-grade student using simple analogies." The more context you give about your audience and purpose, the better the output. Specify format: "Give me a bullet-point summary" or "Format as a JSON object" or "Create a table comparing X and Y." Assign a persona: "Act as an experienced travel guide for Tokyo" shapes responses appropriately and draws on domain-specific knowledge. Iterate: Review outputs and refine your prompt. Ask follow-ups like "Make it shorter," "Add more examples," or "Change the tone to be more formal." ChatGPT excels at iterative refinement within a conversation.

3. Using Advanced Features

**Data Analysis**: Click the attachment icon to upload files (CSV, Excel, PDF). Ask questions like "What are the top 5 trends in this sales data?" ChatGPT will write and execute Python code to analyze your data and produce charts. **Generazione di Immagini**: Simply describe what you want: "A minimalist logo for a coffee shop with a mountain theme." You can iterate by asking for changes to specific elements. **Web Search**: Ask about current events: "What happened in tech news today?" ChatGPT will search and cite sources automatically. **Custom Instructions**: Go to Settings > Personalization to set persistent preferences about yourself and how ChatGPT should respond. These apply across all new conversations. **GPT Personalizzati**: Visit the GPT Store to find specialized assistants, or create your own by combining instructions, file di conoscenza, and API actions.

4. Managing Conversations

Conversations save automatically in the sidebar. Rename chats for organization by clicking the chat title. Use the search bar to find past conversations by keyword. Start new chats for different topics to keep context clean and avoid confusion. Archive old chats to hide them without deleting. Toggle off chat history in Settings > Data Controls if you do not want conversations saved or used for training. Note that conversations without history are deleted after 30 days. For team flusso di lavoros, consider the Team plan which provides shared workspaces, conversation sharing, and centralized billing with admin controls.

Domande frequenti

Yes, ChatGPT offers a piano gratuito with access to GPT-4o mini and limited GPT-4o usage (~10 messages per 5 hours). Free users also get basic access to web browsing, generazione di immagini, and data analysis. Paid plans unlock higher limits and advanced features.

GPT-4o ("omni") is OpenAI's flagship multimodal model that processes text, audio, and images natively in in tempo reale. It's faster and more cost-effective than GPT-4 while matching or exceeding its performance. GPT-4o is especially better with non-English languages and vision tasks.

The o-series (o1, o3, o4-mini) are specialized models designed for complex reasoning in STEM, coding, and strategic analysis. They use internal chain-of-thought reasoning and outperform GPT models on difficult problems, though they may be slower.

Yes, each model has a training data cutoff (e.g., October 2023 for GPT-4o). For current information, ChatGPT can use web browsing to search the internet and provide up-to-date answers with source citations.

Yes, ChatGPT integrates DALL-E for generazione di immagini. Describe what you want in linguaggio naturale, and it creates the image. You can also upload images and request edits or modifications.

By default, conversations may be used to train future models unless you disable chat history. Team and Enterprise plans exclude workspace data from training by default. You can opt out in Settings > Data Controls.

GPT Personalizzati are specialized versions of ChatGPT you can create for specific tasks without coding. Combine istruzioni personalizzate, uploaded file di conoscenza, and capabilities like web browsing or DALL-E. Share them publicly via the GPT Store or keep them private.

Yes. ChatGPT can "hallucinate" -- generating plausible-sounding but incorrect information. Always verify important facts, especially for medical, legal, or financial decisions. The model predicts likely text based on training, not verified facts.

GPT-4o supports up to 128K tokens of context (roughly 96,000 words). This means you can paste long documents, codebases, or conversation histories and ChatGPT will consider all of it when responding. Enterprise plans may offer even longer windows.

Yes. OpenAI's usage policies allow uso commerciale of ChatGPT outputs, including content generated for business purposes, marketing, and client work. However, you should review outputs for accuracy and comply with applicable regulations in your industry.