GPT-5.5, Claude Opus 4.8 & Gemini 3.1 Pro: June 2026 AI Model Wars Explained
June 2026 marks a turning point in AI — OpenAI shipped GPT-5.5 with full agentic capability, Anthropic’s Claude Opus 4.8 now leads all benchmarks, Google’s Gemini 3.1 Pro dominates reasoning tasks, and GPT-5.6 plus Claude Mythos are expected before month end.









