OpenAI’s 28-day Codex shipping sprint has its first result, which means subscribers hoping for a free usage reset will have to wait at least another day.

Thibault Sottiaux, engineering lead for Codex at OpenAI, said on Day 1 that the company had made GPT-6 Astra and GPT-6.1 Sol about 50% faster by default. Speeding things up is the first move in an unusually steep challenge Sottiaux set for his team on Sunday, when he promised to ship a “clear improvement” relevant to most Codex and ChatGPT Work users every day for the next 28 days or ship a full usage reset instead.

Sottiaux put a more concrete number on the change in a follow-up post, saying the two models can now generate approximately 50 tokens per second, up from about 30. Taken literally, that’s closer to a two-thirds jump than 50%, although both figures appear to be rough estimates rather than benchmark results.

The speedup isn’t limited to OpenAI’s own products, since subscribers using Sign in with ChatGPT also get it through OpenCode, Pi, Amp and Devin.

The timing carries some irony. Two days before the challenge began, Sottiaux apologized for a slow start with GPT-6.1 Sol, blaming a major load spike in the model’s first two days, and announced a global reset for paid ChatGPT accounts to make up for it, so the sprint’s first official ship turned out to be a speed improvement to that same model.

The first ship also gives an early sense of what OpenAI is willing to count.

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