readable AI benchmarks (simplified)
OpenAI
GPT-5.3 Codex (Xhigh)
GPT-5.3 Codex (Xhigh) has a Quality Score of 52.7, ranking 92nd among 571 scored models. Per 1M tokens, pricing is $1.75 input, $14.00 output, and $0.175 cached input. It accepts text, image, and pdf input, outputs text, and has a 400k token context window. Its Reliability Score is 55.4, ranking 90th among 573 scored models, above average (total average: 36.5). Its Value Score is 34.2, around average compared with the total Value average of 31.4.
Quality Score52.7coverage 100.0%: AA Intelligence and AA-Omniscience outcomes available
Value Score34.2
Factual reliability55.4
Cache Discount90%
Model specification
- Reasoning
- reasoning
- Input modalities
- text, image, pdf
- 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
- Cache write
- not available
- Cost per task
- not available
Capability
- Intelligence
- 32.5
- Coding
- not available
- Agentic
- not available
- Omniscience
- 10.9
- Correct
- 52.9%
- Blended price
- $1.87
Answer outcomes
Fully graded outcomes (Correct + Incorrect): 94.9%
Correct 52.9%Incorrect 42.0%Partial / not attempted 5.1%
Artificial Analysis benchmarks
- Humanity’s Last Exam
- 42%
- GPQA Diamond
- 92%
- CritPt
- 17%
- AA-Omniscience
- 55%
- AA-LCR
- 83%
Similar models
- GPT-5.5 (Low)OpenAIQuality Score 52.4Value Score 30.8
- GPT-6 Luna (Xhigh)OpenAIQuality Score 51.1Value Score 46.7
- GPT-5.6 Terra (High)OpenAIQuality Score 50.5Value Score 33.0
- GPT-5.6 Sol (Low)OpenAIQuality Score 55.5Value Score 33.9
- GPT-5.5 (Medium)OpenAIQuality Score 55.5Value Score 32.7
- GPT-5.6 Terra (Xhigh)OpenAIQuality Score 53.4Value Score 35.0