OpenAI's GPT-5.6 Pro lineup fragments into 3 distinct models
openai's genomics paper lists gpt-5.6 luna pro, terra pro, and sol pro, replacing the single pro tier with speed, throughput, and max-performance options.
an openai paper on a genomics benchmark lists three gpt-5.6 pro models—luna pro, terra pro, and sol pro—indicating a potential shift from a single top-tier pro offering to a tiered strategy. sol pro recorded the highest pass rate of all 60 models tested at 31.5%, while luna pro showed a seven-point boost over its standard counterpart, suggesting extra compute disproportionately benefits smaller models. this split would allow pro users to choose between speed, throughput, and maximum reasoning, though openai did not disclose specific token usage costs for the pro runs.