OpenAI introduced ChatGPT Pro on December 5, 2024, a premium subscription at $200 per month providing unlimited access to o1, o1-mini, GPT-4o, advanced voice, and a new o1 pro mode that allocates additional compute at inference time to produce more reliable answers on hard reasoning tasks. Benchmark data show o1 pro mode achieves higher "4/4 reliability" scores on competition math (AIME 2024), coding (Codeforces), and PhD-level science (GPQA Diamond) compared to standard o1. The move creates a pricing tier that monetizes inference-time compute as a direct product lever and separates willingness-to-pay for frontier capability from free-tier or standard-subscription demand.
196 other tracked developments touching the same claims.