The AI Models Index tracks premium model releases from 15 top labs since 2023,...

https://fast-wiki.win/index.php/Is_OpenAI_Actually_Steady_with_Release_Timing%3F

The AI Models Index tracks premium model releases from 15 top labs since 2023, verifying release dates and using blind-vote checks for accuracy. Updated biweekly, it shows releases now come every 4.5 days—a 56% faster rate. Recent highlights include GPT-5