GPT-6 Pro and Astra Ultra. Where’s the evidence they’re better?
This story is from 2026-09-05. It is preserved in the archive; the latest stories are on the live feed.
With GPT-5.6 Sol, we had published comparisons showing gains from Ultra , plus a narrower result for GPT-5.6 Sol Pro . There were actual numbers to help decide when those modes were worth using. With GPT-6 Pro in ChatGPT and GPT-6 Astra with Ultra reasoning in Codex, I still haven’t found equivalen…
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- 2026-09-05 21:45 · r/ChatGPTPro
GPT-6 Pro and Astra Ultra. Where’s the evidence they’re better?