OpenAI
GPT-5.3 Codex (xhigh)
Quality Score58.6
Value Score39.0
Reliability55.4
Cache Discount90%
Model specification
- Reasoning
- reasoning
- Input modalities
- text, image
- Output modalities
- text
- Context window
- 400k tokens
- Weights
- closed weights
Token prices USD per 1M tokens
- Input
- $1.75
- Output
- $14.00
- Cached Input
- $0.175
- Cached Output
- not available
- Cost per task
- not available
Capability
- Intelligence
- 45.5
- Coding
- not available
- Agentic
- not available
- Omniscience
- 10.9
- Correct
- 52.9%
- Blended price
- $1.87
Answer outcomes
Correct 52.9%Incorrect 42.0%Abstained 5.1%
Artificial Analysis benchmarks
- SciCode
- 53%
- Humanity’s Last Exam
- 42%
- GPQA Diamond
- 92%
- CritPt
- 17%
- AA-Omniscience
- 55%
- AA-LCR
- 78%
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