Reports indicate OpenAI is currently conducting stealth A/B testing for GPT-5.6 within ChatGPT. Users selecting GPT-5.5 Pro have observed significantly sharper outputs and extended processing times, suggesting a more computationally intensive model is active. Developers note marked improvements in web design and 3D video game generation, though response latency has increased to over an hour for complex tasks.
Leaked specifications suggest the new model features a knowledge cutoff extended to December 2025 and elevated reasoning parameters. While frontend capabilities remain developmental, early benchmarks indicate stronger performance in robotic simulations and spatial understanding compared to previous iterations. Insiders suggest a public release could occur as early as June 25, though OpenAI has not confirmed these reports.
This potential update coincides with heightened market competition. China’s GLM-5.2 now rivals Western models on engineering benchmarks, while Anthropic faces regulatory hurdles affecting its flagship Fable 5 availability. Concurrently, OpenAI is reportedly evaluating token price reductions ahead of anticipated industry IPOs. Prediction markets currently assign high probability to a late-June launch as the race for AI dominance accelerates.