The world's most popular AI assistant
ChatGPT by OpenAI is the most widely used AI chat assistant in the world. It excels at writing, analysis, coding, brainstorming, and complex reasoning. GPT-4o is the flagship model, offering multimodal input and fast responses.
Free tier available — GPT-4o with limits
Common use cases where ChatGPT excels
Blog posts, essays, reports, and creative fiction with consistent voice and structure.
Write, debug, and explain code across all major languages and frameworks.
Summarize documents, extract insights, and synthesize information from multiple sources.
Generate ideas, explore angles, and stress-test concepts before committing.
Expert techniques to get the best results from ChatGPT
Start your prompt with a role: 'You are a senior copywriter specializing in SaaS.' This anchors tone and expertise for the entire conversation.
Tell ChatGPT exactly how to structure the response: 'Return a JSON array', 'Use H2 headers', 'Write in bullet points under 20 words each'.
Break complex tasks into steps. First ask for an outline, then expand each section. This produces far better results than one massive prompt.
Say 'be creative and unconventional' for ideation, or 'be precise and factual' for analysis. ChatGPT responds to tone direction.