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GPT 5.6

OpenAI's GPT 5.6 Sol, Terra and Luna, in one chat with Claude, Gemini and more.

Opens EverAsk Chat on GPT 5.6 Sol. Then switch to GPT 5.6 Terra in the same chat.

Sol, Terra and Luna

The three GPT 5.6 models, all in EverAsk's model picker.

ModelBuilt forEverAsk's note
ChatGPT logoGPT 5.6 SolThe most capable of the threeFlagship power for the hardest problems[1]
ChatGPT logoGPT 5.6 TerraA balance of power and speedBalanced power for everyday work[1]
ChatGPT logoGPT 5.6 LunaFast, light and low costFrontier family, fastest responses[1]

GPT 5.6 at a glance

Made byOpenAI
ReleasedPublicly on 9 July 2026[1]
In ChatGPTFree and Go run GPT 5.6 Luna; Plus runs GPT 5.6 Sol in chat[2]
In EverAskGPT 5.6, Sol, Terra and Luna, plus GPT 5.5 and GPT 5.4
OpenAI's newestGPT-6 Astra (3 September 2026) and GPT-6.1 Sol (29 September 2026). Not in EverAsk yet[3]

Then put the answer to work

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Common questions

What is GPT 5.6?

GPT 5.6 is a family of OpenAI models released in July 2026: Sol, the most capable, Terra, balanced for everyday work, and Luna, fast and light.

What is the difference between GPT 5.6 Sol, Terra and Luna?

Sol is the flagship for the hardest problems, Terra balances power and speed for everyday work, and Luna gives the fastest answers. All three are in EverAsk's model picker.

Does EverAsk have GPT-6?

Not yet. OpenAI released GPT-6 Astra on 3 September 2026 and GPT-6.1 Sol on 29 September. EverAsk runs GPT 5.6, GPT 5.5 and GPT 5.4.

Is GPT 5.6 in ChatGPT?

Yes. ChatGPT Free and Go run GPT 5.6 Luna, and ChatGPT Plus runs GPT 5.6 Sol in chat.

Is EverAsk made by OpenAI?

No. EverAsk is an independent product that puts GPT, Claude, Gemini, Grok and other models in one place. It is not affiliated with OpenAI.

Plans, prices and models change, so check each company's own site before you buy.

Sources (3)
  1. OpenAI rolls out GPT-5.6 (Engadget, July 2026)
  2. Models in ChatGPT (learn.chatgpt.com)
  3. OpenAI launches GPT-6.1 Sol (TechCrunch, 29 Sep 2026)

Ask your own question

The fastest way to choose is to try. Pick one model or two and ask.

Opens EverAsk Chat on GPT 5.6 Sol. Then switch to GPT 5.6 Terra in the same chat.

Model and product names belong to their makers and are used here only to compare. EverAsk is not affiliated with Anthropic, OpenAI, Google, xAI, DeepSeek, Moonshot AI or Perplexity.

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