# Introducing GPT-5.6 series: Sol, Terra and Luna. Coming July 9 10am PT

**URL:** <https://community.openai.com/t/introducing-gpt-5-6-series-sol-terra-and-luna-coming-july-9-10am-pt/1384931>\
**Category:** Announcements\
**Created:** [June 26, 2026, 5:42pm UTC](https://community.openai.com/t/introducing-gpt-5-6-series-sol-terra-and-luna-coming-july-9-10am-pt/1384931 "2026-06-26T17:42:18Z")\
**Posts on this page:** 1\
**Showing post:** 62

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**Author:** ![merefield](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/merefield/32/14812_2.png) [@merefield](https://community.openai.com/u/merefield)\
**Post date:** [July 11, 2026, 10:18am UTC](https://community.openai.com/t/introducing-gpt-5-6-series-sol-terra-and-luna-coming-july-9-10am-pt/1384931/62 "2026-07-11T10:18:17Z")

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The harness is moot though as consistent for all models?

Well let’s see. I’m firmly in the “Terra Ultra” camp atm and saving trees 😜🌲🌳

Anyone with a lower end sub is going to be very happy with the utility of the lighter options?

I remain open minded though.

But I’m surprised that I’m even thinking this way now. This shows a major step improvement in smaller model results imho 💪🏼😎🚀

(FYI [reasoning saves Gemma 4 too](https://community.openai.com/t/clai-your-useful-command-line-helper/1379589/4))

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