Yeschat

Chat with GPT-6 Astra Online

GPT-6 Astra is an OpenAI GPT-6 model for complex, multi-step work. On YesChat it is available on the Max plan.

What is GPT-6 Astra?

GPT-6 Astra is an OpenAI model in the GPT-6 generation. OpenAI describes it as designed for complex tasks and multi-step workflows, combining strong reasoning with coding, research and professional work. It is not part of the GPT-5.6 family: on YesChat it sits above GPT-5.6 Sol and is available on the Max plan.

What GPT-6 Astra is good for

Multi-step tasks from one goal

Describe the result you need, and Astra works through the steps: plan, gather information, draft and check.

Research turned into structured findings

OpenAI lists deep research among Astra's uses: compare sources, organize evidence and get a clear summary of a broad question.

Documents, slides and spreadsheets

In the YesChat chat, agent mode can return an editable .pptx, a document or a cleaned table; Astra is a good fit when the content needs careful structure.

GPT-6 Astra vs other GPT models on YesChat

Luna, Terra and Sol are the three tiers of GPT-5.6; Astra belongs to GPT-6. Pick by how hard the task is and which plan you have. You can switch between them in the same YesChat chat. For a longer look at the model, read our GPT-6 Astra review. See how the GPT-5 family compares on our GPT-5 overview.

GPT-5.6 Luna: fast everyday chat

OpenAI describes Luna as the fastest and most affordable GPT-5.6 tier, built for frequent, lighter requests. On YesChat, it is the free plan's model (15 messages a day) and is billed at 1× on paid plans. More about GPT-5.6 Luna.

GPT-5.6 Terra: balanced everyday work

OpenAI positions Terra between Luna and Sol: strong performance for everyday coding, analysis and document work at a lower cost than the flagship. On YesChat it is available from the Pro plan at 1×, with no message cap on Ultra and Max (a fair-use limit applies). More about GPT-5.6 Terra.

GPT-5.6 Sol: the GPT-5.6 flagship

OpenAI positions Sol as the GPT-5.6 tier for the most demanding work: complex reasoning, advanced coding, long research and scientific analysis. On YesChat it is available from the Ultra plan and is billed at 2×. More about GPT-5.6 Sol.

GPT-6 Astra: long, multi-step tasks

OpenAI describes Astra as a GPT-6 model for complex, multi-step workflows that combines reasoning with coding, research and professional work. On YesChat it is available on the Max plan and is billed at 2×.

How to chat with GPT-6 Astra on YesChat

  • Step 1: Create a free account

    Sign up with your email. No credit card is needed. The free plan includes 15 messages a day with GPT-5.6 Luna.

  • Step 2: Click "Chat with GPT-6 Astra in YesChat"

    Click "Chat with GPT-6 Astra in YesChat": the YesChat chat opens with GPT-6 Astra already selected. GPT-6 Astra needs the Max plan; a free account can use GPT-5.6 Luna.

  • Step 3: Ask, attach a file, follow up

    Type your question and keep the conversation going. In the YesChat chat, agent mode (on every plan) also reads PDFs, Excel and CSV files, Word documents and screenshots.

Frequently Asked Questions