Google has 43 models on The Model Index, from PaLM 2 (May 2023) to Gemini 4 Argon (30 Sep 2026). Its strongest is Gemini 4 Argon, with an estimated index score of ~188 (GPT-4 = 100). 10 have open weights.
Index score is fitted from independent evaluations and scaled so GPT-4 = 100; a striped bar is an estimate for a model not yet independently tested. Prices are list prices per million tokens.
Dates come from each lab's own announcement, linked where one exists.