ChatGPT is an AI assistant developed by OpenAI that can write, analyze, research, brainstorm, code, create content, generate images, and assist with a wide range of personal and professional tasks. It is one of the most widely used AI platforms in the world and supports text, voice, image, file, and multimodal interactions. ChatGPT now runs on the GPT-5.6 series of models, with GPT-5.6 Sol serving as OpenAI’s flagship model for complex reasoning, coding, and agentic work.
Key takeaway: ChatGPT runs on OpenAI’s GPT-5.6 series, released July 9, 2026, with Sol as the flagship model for difficult reasoning, coding, and tool-heavy tasks. GPT-5.5 arrived in April 2026, and OpenAI continues to update the assistant regularly with new capabilities.
Key takeaway: In August 2026, OpenAI began rolling out GPT-Live-1, a new voice model for ChatGPT Voice that supports full-duplex conversation, meaning ChatGPT can listen and speak at the same time. GPT-Live-1 is available to paid subscribers, with GPT-Live-1 mini serving free users.
OpenAI describes GPT-Live as a turnless speech model built on a low-latency architecture that enables continuous, more natural voice interaction. Instead of the strict back-and-forth of earlier voice modes, ChatGPT Voice with GPT-Live-1 can respond while the user is still talking and can hand deeper reasoning to other models without breaking the flow of conversation. The rollout is reaching ChatGPT apps and the web over time. For students practicing languages, preparing for interviews, or dictating long documents, the new voice experience makes spoken interaction with ChatGPT feel closer to talking with another person.
On August 13, 2026, OpenAI also previewed Ultrafast, a new API service tier that runs GPT-5.6 Sol up to 14 times faster than standard processing. Powered by Cerebras hardware, Ultrafast generates up to 750 output tokens per second and is initially available to a select group of API customers. For developers, it is an early example of dedicated hardware accelerating frontier-model inference.
Beginner to Advanced
One of the most versatile AI assistants available today, suitable for beginners and advanced users alike, now powered by OpenAI’s latest GPT-5.6 series models.
9.5 / 10
ChatGPT remains one of the most complete AI platforms available, combining strong reasoning, content creation, research, coding, image generation, data analysis, and productivity features within a single interface. With the GPT-5.6 series and its flagship Sol model, it also leads in complex reasoning and agentic tasks. Its broad capabilities make it valuable for individuals, businesses, educators, developers, and creators seeking a flexible AI assistant that can adapt to a wide variety of tasks.
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