The 5th-Gen AI War: How Grok 4.5, Fable 5, and GPT-5.5 Stack Up and Why OpenAI Just Raised the Stakes With GPT-5.6

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I've been following the AI model race closely enough to know that the announcements have started blurring together. Every few weeks another lab drops something described as frontier-defining, the benchmarks circulate for a day, the comparisons get posted, and then the next release arrives before any