Built by OpenAI, ChatGPT is the world's most widely used conversational assistant. It answers questions, writes and rewrites text, analyzes documents and images, and can even browse the web to find up-to-date information. Its versatility has made it a go-to tool for individuals and professionals alike.
Create a free account at chatgpt.com, then type your request into the chat box. Specify the context, tone and format you expect to get better results. You can attach files or images, and refine the answer as the conversation goes on.
Prices are indicative and may change — check the official site for up-to-date pricing.
Yes, ChatGPT offers a free plan that gives access to the standard model with some usage limits. A low-cost mid-tier Go plan raises those quotas, while the Plus subscription unlocks the most capable models and significantly higher limits.
By default, conversations may be used to improve the models, but you can turn this off in the privacy settings. The Business and Enterprise plans exclude your data from training.
Claude is the AI assistant built by Anthropic, known for its refined writing, reliable reasoning and large context window. It excels at analyzing long documents, programming and nuanced conversations. The Projects and Artifacts features turn it into a genuine workspace.
WriteHuman is an AI-powered content rewriting tool designed to transform AI-generated text into human-like writing. It aims to help users bypass AI detection tools by rephrasing content to appear more natural and authentic.
Halfway between a search engine and a conversational assistant, Perplexity answers your questions while systematically citing its sources. Every claim is linked back to the web pages it consulted, making it a valuable tool for market monitoring, documentary research and fact-checking.