OpenAI's new flagship GPT-5.6 Sol beats Anthropic's Claude Mythos 5 in coding benchmarks, but the US government is forcing a restricted rollout. OpenAI isn't happy about it.

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 launched Sol, its most powerful model, to about 20 partners approved by Washington under Trump's AI executive order. Broad access comes later.

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