Release age and training cutoff for 20 models, sorted stalest first

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

This page lists release dates and training cutoffs for 20 models, sorted oldest-first. Llama 4 is the stalest (cutoff Aug 2024); GPT-6 Astra is the freshest (cutoff Apr 30, 2026). Only 9 of 20 models have a published cutoff—Mistral, DeepSeek, xAI, and others don't disclose one. The author clarifies that web search doesn't update a model's knowledge; it only papers over the gap for a single answer. To check a model's cutoff, ask it directly, then verify against this table.

Why it matters: A live-ranked table of 20 models' training cutoffs answers the everyday question 'how old is my model's knowledge.' Llama 4 is stalest (Aug 2024 cutoff); Mistral's entire lineup doesn't disclose cutoffs. Strong utility but lacks deeper analysis or industry impact, so it lands ...