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Has GPT-5.6 Been Officially Released? How to Use It? Mainland China Sol/Terra/Luna Differences and Usage Tutorial

7/15/2026

🆕 7.15 Update: GPT-5.6 has completed its global full rollout — free users can use Luna directly, and Plus/Pro users can use all three models (Sol/Terra/Luna). If your account doesn't show the entry yet, update your client and log in again.

# Has GPT-5.6 been officially released? Can I use it now?

Yes, it's released and you can use it now. GPT-5.6 was officially rolled out globally by OpenAI at around midnight Beijing time on July 10, 2026 (July 9 US time), with the three models Sol, Terra, and Luna launching simultaneously on ChatGPT, Codex, and the API.

If you meet any of the following conditions, you can use GPT-5.6 right now:

  1. Update the ChatGPT / Codex client to the latest version — after reopening, Sol, Terra, and Luna will appear in the model picker;
  2. Have a Plus, Pro, Business, or Enterprise subscription — Plus and above can call Sol at medium/high reasoning effort, while Pro/Enterprise can choose Sol Pro;
  3. Free users can use it too — in ChatGPT Work or Codex, free and Go users get Terra by default;
  4. Access via the OpenAI API — confirm in the console model list whether your organization account has GPT-5.6 access enabled.

📌 Official source: OpenAI announcement — Previewing GPT-5.6 Sol (opens new window)

If you meet the conditions but still don't see the entry, it's usually because the client version hasn't been updated or the push hasn't reached your account's batch yet. Wait a few hours to 1-2 days — it doesn't mean GPT-5.6 hasn't been released.

# What's the difference between GPT-5.6 Sol/Terra/Luna, and how do I choose?

GPT-5.6 Sol Terra Luna

This time, the core upgrade of GPT-5.6 is no longer simply "smarter chat", but a comprehensive shift toward "long-horizon task execution" and multi-Agent collaboration (ultra mode). OpenAI divides it into three capability tiers:

Model Positioning Core features and ideal use cases API price (per million tokens input/output)
GPT-5.6 Sol Top-tier flagship Complex reasoning, deep programming, long-horizon cybersecurity and biological analysis $5.00 / $30.00
GPT-5.6 Terra Balanced all-rounder Everyday workplace tasks, medium-level coding, large-scale enterprise API calls $2.50 / $15.00
GPT-5.6 Luna High cost-performance Light daily Q&A, short-text rewriting, mass batch automation processing $1.00 / $6.00

💡 One-line selection advice: For everyday office writing, just pick Terra (OpenAI says its performance is close to the previous flagship at half the cost); switch to Sol for complex system architecture design or long-horizon debugging; use Luna for customer service or batch title generation to save the most money.

# How to use GPT-5.6 in mainland China? 4 methods explained

Given the special network and payment environment in mainland China, here are four viable paths, ranked by recommendation priority:

# 1. Upgrade ChatGPT Plus/Pro on the official site (first choice for native experience)

ChatGPT Plus Pro upgrade

If you want the native file upload, advanced voice, and the subsequent multimodal ecosystem, go the official subscription route.

  • Official entry: chatgpt.com
  • Subscription threshold: You need a stable overseas proxy node and an overseas virtual card that supports international payments for the Plus/Pro subscription. GPT-5.6 is fully rolled out, so Sol usually appears in the model picker soon after the subscription takes effect.
  • If you don't have an overseas credit card, you can complete the upgrade via self-service tools such as gptplus.org.cn (opens new window).

# 2. Developer API integration (first choice for businesses/developers)

GPT-5.6 API integration

If you need to integrate Sol / Terra / Luna into an enterprise customer-service bot or knowledge base, you can apply through the OpenAI API platform.

  • Platform entry: platform.openai.com
  • Cost-saving strategy: Introduce a "task routing" mechanism — use Luna for general classification, Terra for everyday logic, and leave critical final quality control and multi-Agent collaboration to Sol, optimizing cost.

# 3. Long-horizon development via Codex / ChatGPT Work

Codex coding capability

For developers, the code refactoring capability brought by GPT-5.6 is one of the highlights of this upgrade.

  • In the latest desktop client, Plus and higher plan users can directly call GPT-5.6 Sol; with ultra multi-agent mode enabled, the model can coordinate multiple sub-agents to handle cross-file bug fixes and linked testing in parallel.

# 4. Mainland mirror sites (backup option, suitable for users with restricted networks)

If you can't resolve network access issues for now, mainland mirror sites are a low-threshold transitional choice.

GPT-5.6 mirror site interface

  • Core advantage: No proxy configuration needed, direct access on mainland networks, supports Chinese interaction.
  • Steps: Visit a mainland mirror site → register an account → select GPT-5.6 Terra or Sol in the model switcher.
  • ⚠️ Note: When using mirror sites, protect your personal privacy and never upload company confidential data that hasn't been desensitized; prioritize sites that clearly label the real model name and have clear quota explanations.

# How to get the most out of GPT-5.6? (With prompt templates)

Since GPT-5.6 has stronger long-context and task-decomposition capabilities, using structured prompts lets it produce more precise results:

Prompt template: "You are a senior operations expert with 10 years of experience. Based on the meeting notes draft I provide below, put together a business progress report for executives. Requirements: include the 3 core conclusions reached, clear action items (with owners), and potential project risks. Use a table for output, and end with a one-sentence summary of the core goals for the next phase."

Prompt template: "You are a senior backend architect. Below is a Node.js code snippet from my project that has potential memory-leak issues. Find the root cause, provide a minimal fix that meets production-security standards, and list 3 test steps to verify the fix is effective."

# FAQ

Q1: Is GPT-5.6 still in phased rollout and not fully available?

  • A: No. GPT-5.6 completed its global push on July 9-10, launching simultaneously across ChatGPT, Codex, and the API, essentially rolling out within 24 hours. If individual accounts don't see it yet, it's usually because the client hasn't been updated — wait or log in again.

Q2: Do mirror sites in mainland China provide the same answer quality as the official site?

  • A: It depends on whether the mirror site legitimately integrates official API relay. We recommend choosing sites that clearly label Sol / Terra / Luna versions, have clear quota explanations, and support small free tests.

Q3: Does the average person really need the flagship Sol version?

  • A: For daily writing, translation, spreadsheets, and similar tasks, Terra already performs close to Sol while being faster and cheaper. Unless it involves long code writing or complex logical reasoning, there's no need to burn Sol's quota.

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