ChatGPT is OpenAI's consumer-facing AI assistant, first launched in November 2022 and now among the most widely used software products on the internet. By mid-2026, the product has fully migrated to the GPT-5 model family—GPT-4o and o3 have been retired from the consumer interface. The model picker now presents three tiers: GPT-5.3 Instant (fast, available on all plans including Free), GPT-5.4 Thinking (extended reasoning for complex tasks), and GPT-5.5 Pro (maximum performance for the hardest problems, available on Pro and above).
The platform supports text, voice, images, code execution, file analysis, and live web search within a single chat interface. Standout capabilities added in the past year include Deep Research (autonomous multi-source report generation with citations), a significantly improved Advanced Voice Mode with realistic intonation and emotional range, and agentic tool use that lets reasoning models chain together search, Python execution, vision, and image generation in one workflow.
Six pricing tiers run from free to custom enterprise. A new $8/month Go plan launched globally in January 2026. Business pricing dropped from $25 to $20 per seat in April 2026 and now includes over 60 data connectors. Enterprise requires a 150-seat minimum and annual contract.
OpenAI was founded in San Francisco in 2015.
Key Benefits
- Capability breadth: One interface covers writing, coding, research, image generation, and voice, reducing the need to juggle multiple specialized tools.
- Tiered reasoning: The Thinking model handles difficult math, coding, and document tasks that the standard Instant model cannot, without requiring a separate product or subscription.
- Deep Research: Autonomous multi-source synthesis compresses multi-hour research tasks into minutes with cited output.
- Voice quality: Advanced Voice Mode produces contextually expressive, low-latency speech—useful for hands-free workflows and language practice.
- Enterprise readiness: Business and Enterprise tiers include SSO, compliance certifications, data-privacy controls, and admin workspace management.
Use Cases
- Writing and content creation — Drafts, edits, and reformats long-form content, emails, marketing copy, and reports with adjustable tone and style instructions.
- Software development — Generates, explains, and debugs code across major programming languages; executes Python in a sandbox for data analysis and rapid prototyping.
- Research and summarization — Deep Research mode queries live web sources and produces structured, cited reports on complex topics without manual browsing.
- Voice and hands-free interaction — Advanced Voice Mode enables real-time conversational assistance for commuting, accessibility needs, or language learning.
