Show HN: How Stale Is Your AI? Release age and training cutoff for 20 models

The page lists release dates and training cutoffs for 20 AI models from eight labs, showing that 10 models have published cutoffs. It explains that a model’s knowledge ends at its cutoff date, so a model released in September may already be months behind if its cutoff is earlier. Five labs—Anthropic, Google DeepMind, Meta, OpenAI, and xAI—provide published cutoffs for at least one model.