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The Frontier Model Race Heats Up: Claude Mythos Withheld, GPT-5.5 Incoming, and Gemini 3.1 Leads Benchmarks
The frontier model landscape is shifting faster than ever, and the latest round of releases shows a split between raw capability, controlled access, and task-specific leadership. Anthropic has disclosed Claude Mythos Preview through Project Glasswing rather than making it broadly available, OpenAI has now shipped GPT-5.5 after GPT-5.4’s March release, and Google’s Gemini 3.1 Pro is posting standout benchmark results. Here’s what it all means for builders. Anthropic's Claude M
May 113 min read
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