OpenAI Retires GPT-5.5 as GPT-6 Sol Rumors Surge Before Major Release Week

Gift Card Launch

OpenAI officially introduced gift cards, functioning similarly to Apple gift cards. Users can redeem codes on the official website to add account balance or purchase subscriptions directly. This addresses three pain points: payment convenience (no more third-party recharges or complex payment flows), security (official channel reliability), and flexibility (gifting to others). The move is expected to lower the GPT subscription barrier, spur secondary-market trading on platforms like Xianyu, and create new commercial opportunities for merchants with distribution channels.

Executive Teasers for a Major Release Week

OpenAI product lead Tibo Sottiaux posted on X that the volume of products and features shipping this week would match what one might have expected at DevDay 2025. CEO Sam Altman followed with a rare pre-announcement: a big version release this week, with more heavyweight launches during DevDay.

GPT-6 Sol Rumors and Gray-Scale Testing Reports

Community speculation immediately centered on a possible GPT-6 Sol release. A non-official account that tracks Codex updates claimed GPT-6 Sol would likely launch on Thursday. While unconfirmed by OpenAI, multiple signals suggest gray-scale testing is underway.

User Chetaslua (@chetaslua) reported that some users on GPT-5.6 Sol were being routed to GPT-6 Sol in the backend. They noted GPT-5.6 Sol emphasizes reinforcement learning (RL) and efficiency, and described GPT-6 Sol as investing deeply in RL with strong results: "It's really fast. OpenAI leads on efficiency, and the gap versus Anthropic is widening further. I'll soon share a Sol 6 vs Opus 5.2/5.1 comparison."

Another user confirmed widespread gray-scale access: "Many users report being routed to GPT-6 Sol while using GPT-5.6 Sol. Early feedback is universally positive, and speed is said to be very fast. Time for me to test it myself."

GPT-5.5 Deprecation

The ChatGPT official account announced that starting October 14, GPT-5.5 will no longer be available in ChatGPT, ChatGPT Work, or Codex, requiring users to migrate to newer models. This phase-out is widely interpreted as clearing space for the next model generation.

Signal Synthesis: A Model and Product Generation Shift

GPT-5.5 gradually retiring

GPT-5.6 Sol serving as current mainstay

GPT-6 Sol entering suspected testing

Major product releases scheduled this week

Together, these indicators point to OpenAI executing a coordinated model and product lineup transition.

Domestic Access Considerations for Chinese Developers

Developers in China face practical hurdles: official region availability, payment methods, network environment, account risk controls, and API access. For occasional use, the free tier suffices. For integrating GPT, Claude, or Codex capabilities into IDEs, scripts, or internal tools, stable endpoints and controllable call chains are critical. A security reminder: never treat any model as a "universal administrator"; production keys, customer data, deletion permissions, payment permissions, and publishing permissions must remain isolated. The more capable the AI, the harder the permission boundaries need to be.