OpenAI paper lists three GPT-5.6 Pro variants, breaking the single top-tier model tradition

OpenAI论文揭示GPT-5.6三个Pro变体，打破单一顶级策略

An OpenAI genomics benchmark paper lists three Pro models for GPT-5.6: Luna Pro, Terra Pro, and Sol Pro. It's the first time ChatGPT Pro isn't just one top-tier model—users may pick between speed, throughput, and max reasoning. Sol Pro hits a 31.5% pass rate on 129 tasks, 2.8 points above standard Sol; Luna Pro gains the most, jumping from 16.5% to 23.6%. The paper doesn't say whether these Pro variants will ship in ChatGPT, and token usage for Pro runs is not disclosed.

Why it matters: OpenAI revealed three GPT-5.6 Pro variants for the first time in a genomics paper, breaking the ChatGPT Pro single-flagship convention. Sol Pro leads on benchmarks but the post doesn't disclose speed or cost — users will face real trade-offs between speed, throughput, and reas...