This user guide shifts the focus from “writing the perfect prompt” to defining outcomes, providing context, supervising long workflows, and exercising judgment at key moments. It also explains the roles of Sol, Terra, and Luna and how to use ChatGPT Work.
The following is the visible text extracted from the page during this visit. It includes page navigation, automatic translation, advertisements, comments, and other page elements; verify against the original URL before citing it.
Sidebar menu Get app Write Notifications Home Library Profile Stories Stats Following
Find writers and publications to follow.
See suggestions Welcome Offer Access to everything. Now 30% off. Upgrade now Mark Chen
I build things, break things, and write about the messy middle where humans and AI learn to get along. Part tech hobbyist, part philosopher, without degree.
Follow writer
Member-only story
ChatGPT User Guide Prompt Engineering Artificial Intelligence Ai Steering The Complete ChatGPT User Guide for GPT-5.6 How to use Sol, deeper reasoning, ChatGPT Work, and outcome-driven prompting without overengineering every request Mark Chen Follow 15 min read · Jul 14, 2026
54
1
OpenAI released GPT-5.6 on July 9, 2026, across ChatGPT, Codex, and the OpenAI API.
But GPT-5.6 is not merely another model upgrade that produces somewhat better answers.
It represents a more consequential change in how we should use ChatGPT.
Earlier generations rewarded users who carefully engineered individual prompts. GPT-5.6 increasingly rewards users who can define outcomes, provide useful context, supervise longer workflows, and exercise judgment at the right moments.
The central question is no longer:
How do I write the perfect prompt?
It is becoming:
How do I give an intelligent system enough direction, context, and authority to accomplish meaningful work — without surrendering control?
This guide explains how to do exactly that.
What GPT-5.6 Actually Changes
GPT-5.6 is a family of three capability tiers:
Sol is the flagship model for the most demanding reasoning and professional work. Terra balances capability, speed, and cost. Luna is the fastest and most economical tier. Welcome Offer Access to everything. Now 30% off.
Unlock every single story.
Read member-only stories
Support writers you read most
Listen to audio narrations
Read offline with the Medium app
Access our Mastodon community
Connect your custom domain
Create your own publications
Upgrade now
54
1
Written by Mark Chen 413 followers · 105 following
I build things, break things, and write about the messy middle where humans and AI learn to get along. Part tech hobbyist, part philosopher, without degree.
Follow Responses (1) Tabbit Browser
What are your thoughts?
Cancel Respond
Sebastian Buzdugan
Jul 24
the shift from prompt tricks to workflow supervision is real, but people keep skipping the ugly part: evals. once you let gpt-5.6 run longer chains with tools, a small bad assumption turns into a very confident pile of junk. outcome-driven prompting sounds clean until nobody can measure the outcome
1 reply
Reply
Help
Status
About
Careers
Press
Blog
Store
Privacy
Rules
Terms
Text to speech
Repost to your network. A new and easy way to share your recommended stories with your followers.
Okay, got it
GPT-5.6 Sol
