Verified65% confidenceFactExact time
Codex 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 accuracy
3
Sources
65%
Confidence
Medium-term (~90 days)
Relevance
7/22/2026
First Seen
Valid until: 10/20/2026(expired)
Sources
Related Claims
VerifiedCodex'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.80% 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.79% similarUnverifiedExcessive reasoning can hurt performance, with x-high scoring higher than Max on the Frontier Code benchmark.71% similarUnverified更强大的推理模型（如OpenAI o系列）往往延迟更高，不适合实时对话，构成速度-智能权衡困境67% similarUnverifiedOpenAI specifically mentions the limitation of knowledge staleness in the second point of the context optimization section of the Codex documentation.65% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/594008API
curl https://kongchang.com/api/v1/knowledge/claims/594008MCP
get_claim(id=594008)