GPT-6 is the latest generation of OpenAI's language models, released in September 2026. Instead of a single model, it comes as a family of three tiers: Astra, the flagship for demanding end-to-end work such as deep research, software engineering, and scientific analysis; Sol, a cost-efficient high-end model for professional tasks and agentic coding; and Luna, a fast, affordable model for everyday chat.

All GPT-6 models understand text, images, and files, support step-by-step reasoning, and offer a context window of about 1 million tokens - enough to work with entire codebases, long reports, or a large set of documents in one conversation.

Deep Reasoning

Work through complex problems step by step before answering, from math to strategy.

Agentic Coding

Plan and carry out multi-step coding tasks across large codebases, then check the result.

Deep Research

Analyze many sources and turn them into structured, well-argued reports.

Long Document Context

Keep about 1M tokens in view - whole repositories, contracts, or report collections.

Vision and File Understanding

Read images, screenshots, charts, and uploaded files alongside your text.

Content Writing

Draft articles, presentations, and business documents in a clear, polished style.

Open the chat

Click "Open Chat" to start chatting with GPT for free - no account required.

Describe your task

Ask a question, paste code or text, or describe the result you need.

Get a detailed answer

The model reasons through your request and replies with a structured answer.

Refine and iterate

Ask follow-ups, add context, or request changes until it fits.

Use the result

Copy the answer or code straight into your work.

GPT-6 is OpenAI's newest model generation, released in September 2026. It comes in three tiers: Astra, Sol, and Luna.

Astra is the flagship for the most demanding work. Sol balances high-end quality with lower cost. Luna is the fastest and most affordable tier for everyday chat.

All GPT-6 tiers support a context window of about 1 million tokens.

Yes, the GPT chat on chatai.org is free and requires no registration. There is a daily message limit.

GPT-6 improves reasoning, coding, and long-running agentic work, and supports a context window of about 1 million tokens.

Yes. GPT-6 models accept text, images, and files as input.

GPT-6: OpenAI's Newest Generation

What is GPT-6?

What GPT-6 can do

How to use GPT-6

Frequently Asked Questions