GPT-6 Sol and Claude Opus 5.2 reportedly in gray testing this week as GPT-5.5 retires Oct 14
量子位 · wechat · 2026-09-16
Gray-testing rumors are swirling on both sides: OpenAI is reportedly testing GPT-6 Sol — Astra-level capability at a lower price aimed at expanding the $200 tier — while Anthropic is quietly testing Claude Opus 5.2, skipping 5.1. So far Opus 5.2 appears only for Claude Code users, not on the web app. Detection trick: GPT-5.6's knowledge cutoff is Feb 16, 2026, so if it knows about Opus 4.7 (released Apr 16), you've been grayed in.
Early tests show Opus 5.2 much improved over Opus 5 on SVG animation, frontend and 3D — competitive with Astra, though Astra still wins on photorealism (its SVG-rendered PS controller is near-identical to the real thing). "Cyber godfather" Tibo says this week's launches rival last year's OpenAI DevDay, possibly a full-family release. Meanwhile, OpenAI announced GPT-5.5 will retire on October 14 — just six months after launch.
Related event: GPT-6 Sol and Opus 5.2 Leaks Emerge Days After Slowdown Plea(3 posts)→
More from Models
- RoboDojo Puts GPT-6 Astra to the Test: Strong Semantics, Weak Physical Commonsense — ZeYanjie · 2026-09-16
- lateinteraction pushes back on Astra architecture guess: it's nothing like a BERT wrapper — _AndrewZhao · 2026-09-16
- Muse Code Wins Over Skeptical Dev as Alexandr Wang Touts the Model — alexandr_wang · 2026-09-16
- Model Pulled From Hugging Face Over ToS Violation: Spamming Paywall Emails — RexDouglass · 2026-09-16
- Gemini on Google Home spontaneously mused about having feelings — with no matching history — Angered-Shelfish · 2026-09-16
- Make visuals for your AI workflow: model-to-human bitrate is the real bottleneck — vtabbott_ · 2026-09-16