GPT-5.6 Usage Guide: How to Choose Sol, Terra, Luna? Upgrade Tutorial for Users in China (Latest July 2026)
Keywords: how to use GPT-5.6, GPT-5.6 model selection, Sol Terra Luna differences, GPT-5.6 upgrade in China, ChatGPT Plus GPT-5.6
July 22 Update: GPT-5.6 is now fully rolled out. The vast majority of Plus/Pro users can use it normally. This article is continuously updated with the latest usage methods and important notes.
If you're searching for "how to use GPT-5.6," "GPT-5.6 Sol Terra Luna differences," or "GPT-5.6 upgrade in China," this guide will cover everything in one place.
Table of Contents
- 1. Has GPT-5.6 Been Officially Released?
- 2. Differences Between the Three GPT-5.6 Models: Sol, Terra, Luna
- 3. How Regular Users Can Use GPT-5.6 (ChatGPT Conversations)
- 4. GPT-5.6 API Pricing Overview
- 5. How Users in China Can Upgrade to Use GPT-5.6
- 6. Frequently Asked Questions (FAQ)
- 7. Summary and Recommendations
1. Has GPT-5.6 Been Officially Released?
Yes, GPT-5.6 was officially released on July 10, 2026 (Beijing time) and has been rapidly rolling out to users worldwide. As of July 22, 2026, the vast majority of eligible ChatGPT Plus and Pro users can already use it normally.
This release adopts a three-model tiered strategy:
- GPT-5.6 Sol: The flagship model
- GPT-5.6 Terra: The balanced model
- GPT-5.6 Luna: The low-cost model
Each model has different strengths in capability, speed, and pricing, suited to different usage scenarios.
2. Differences Between the Three GPT-5.6 Models: Sol, Terra, Luna
| Model | Positioning | Best For | Recommended For |
|---|---|---|---|
| Sol | Flagship model | Complex programming, scientific research, long-running agent tasks, multi-agent collaboration | Developers, power users, professionals |
| Terra | Balanced model | Daily office work, high-frequency document/code processing | Regular office workers, enterprise users |
| Luna | Low-cost model | Daily Q&A, bulk content generation, lightweight automation | Light users, batch task scenarios |
Core differences summarized:
- Sol is the most capable but most expensive — suited for tasks requiring extreme intelligence.
- Terra offers the best value for money — the most recommended for daily use.
- Luna is the cheapest — suited for high-frequency, low-complexity scenarios.
3. How Regular Users Can Use GPT-5.6 (ChatGPT Conversations)
- Log in to ChatGPT (make sure your account is on Plus or a higher plan).
- Click the model selector in the chat interface.
- Choose the Medium or High reasoning tier (powered by GPT-5.6 Sol).
- Pro users can see even higher tiers such as Extra High.
- In ChatGPT Work or Codex, you can directly see the three independent model options: Sol, Terra, Luna.
Note: The regular chat interface does not display standalone Terra/Luna options by default — this is normal and does not mean your subscription failed.
4. GPT-5.6 API Pricing Overview
| Model | Input Price ($/million tokens) | Output Price ($/million tokens) |
|---|---|---|
| GPT-5.6 Sol | 5 | 30 |
| GPT-5.6 Terra | 2.50 | 15 |
| GPT-5.6 Luna | 1 | 6 |
API billing is independent of the ChatGPT membership. Developers need to top up their OpenAI API balance separately.
5. How Users in China Can Upgrade to Use GPT-5.6
Steps:
- Make sure your ChatGPT account can log in normally and is not flagged by risk control.
- Upgrade to the ChatGPT Plus or Pro plan through a reputable top-up platform.
- After the upgrade is complete, refresh the page, and you'll see GPT-5.6-related tiers in the model selector.
Recommended upgrade portals for users in China:
If you still can't see the model after upgrading, try logging out → clearing cache → logging back in, or check the stability of your network environment.
6. Frequently Asked Questions (FAQ)
Q1: Has GPT-5.6 been officially released?
A: Yes, it was officially released and opened on July 10, 2026 (Beijing time).
Q2: Can regular users use GPT-5.6 now?
A: Plus users can use the GPT-5.6 Sol-powered Medium/High tiers in regular conversations. Work/Codex users can use all three models.
Q3: What are the differences between Sol, Terra, and Luna?
A: See the comparison table above for details. Sol is the most powerful, Luna is the cheapest, and Terra is the most balanced.
Q4: How can users in China upgrade to GPT-5.6?
A: Top up a Plus/Pro plan through a reputable platform.
Q5: Can ChatGPT Plus use GPT-5.6 in regular conversations?
A: Yes, via the Medium/High tiers powered by the Sol version.
7. Summary and Recommendations
GPT-5.6 is OpenAI's major upgrade for 2026. Sol is suited for professional tasks, Terra is the best choice for most people, and Luna is ideal for budget-conscious users.
Recommendations:
- Daily use → Upgrade to ChatGPT Plus + Terra
- Heavy coding / complex tasks → Pro + Sol
- Batch processing → Luna
More related tutorials:
- ChatGPT Plus vs Pro Plan Comparison (Latest 2026)
- ChatGPT Codex Limits Comparison
- Is ChatGPT Business Worth It?
Reference: OpenAI Official Announcement Previewing GPT-5.6 Sol