OpenAI unveils GPT-5.6, claiming it surpasses Claude Mythos. Release by July 31, 2026 at 88.9% YES.

OpenAI's GPT-5.5 surpasses Anthropic's Mythos in a key evaluation. Google having the best AI model by June 2026 at 0.5% YES.

OpenAI agrees to slow the rollout of GPT-5.6, delaying public release. Release by June 30, 2026 at 8.4% YES.

OpenAI unveils GPT-5.6, claiming it surpasses Claude Mythos. Release by July 31, 2026 at 88.9% YES.

OpenAI introduces GPT-5.6 to challenge Claude Mythos 5 - SiliconANGLE