Verified65% confidenceFactExact time
Codex's thinking intensity has four levels—low, medium, high, and ultra-high—along with standard and fast speed options; fast mode is approximately 1.5 times the speed of standard but consumes more quota.
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
9/26/2026
First Seen
Valid until: 12/25/2026
Sources
Related Entities
Related Claims
VerifiedCodex thinking intensity is divided into four levels—low, medium, high, and ultra-high—where the ultra-high level corresponds to OpenAI o-series extended reasoning mode, consuming more quota but achieving higher accuracy80% similarUnverifiedCodex's reasoning levels are divided into four tiers—low, medium, high, and ultra-high—with higher levels taking more time and being more suitable for complex tasks.75% similarUnverifiedExcessive reasoning can hurt performance, with x-high scoring higher than Max on the Frontier Code benchmark.67% similarUnverifiedOpus typically represents flagship-level capability with stronger reasoning and longer context handling, but comes with higher invocation costs and slower response speeds.66% similarUnverifiedIn the model loader, a higher inference strength value yields better generation quality but lower speed, representing a trade-off between quality and speed.66% similar
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