Expired50% confidenceFactExact time
The OpenAI Codex experiment used ultra-high mode (XGBT 5.5), which consumes tokens faster but has noticeably stronger reasoning capabilities.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
This claim has expired. It is kept for the record and no longer describes the current state.
Valid until: 9/30/2026(expired)
Sources
Related Claims
UnverifiedThe datasette-ip-rate-limit plugin was built with assistance from OpenAI's Codex (based on the GPT-5.5 xhigh model).76% similarUnverifiedOpenAI performs significantly stronger in computer use, with the Codex desktop application able to control an entire Mac to complete tasks such as configuring Xcode.70% similarVerifiedOpenAI has recently performed multiple rounds of updates to Codex, achieving significant improvements in code comprehension, context window size, and response speed.68% similarUnverifiedCodex Micro is equipped with a knob for real-time control of Reasoning Effort, derived from the extended thinking architecture of OpenAI's o-series models.67% similarUnverifiedOpenAI's code tool Codex is known for hitting rate limits quickly even under light usage.67% similar
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