Unverified50% confidenceDecision RuleExact time
When using Codex, it is recommended to select the gpt-5-codex or gpt-5-codex-mini model, with reasoning typically set to medium and raised to high for complex problems.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/30/2026
First Seen
Valid until: 11/28/2026
Sources
Related Entities
Related Claims
UnverifiedThe Codex IDE extension uses the GPT-5 Codex (Medium Reasoning) model by default, which has strong reasoning capabilities but is relatively slow.74% similarUnverifiedGPT-5 Codex may have an edge in mathematical and physics calculations, with soft-body physics deformation effects closer to reality.74% similar
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