readable AI benchmarks (simplified)
OpenAI
GPT-5.6 Terra (Xhigh)
GPT-5.6 Terra (Xhigh) has a Quality Score of 53.4, ranking 87th among 571 scored models. Per 1M tokens, pricing is $2.00 input, $12.00 output, $0.200 cached input, and $2.50 cache write. It has a 1M token context window. Its Reliability Score is 48.5, ranking 144th among 573 scored models, above average (total average: 36.5). Its Value Score is 35.0, around average compared with the total Value average of 31.4.
Model specification
- Reasoning
- reasoning
- Input modalities
- none
- Output modalities
- none
- Context window
- 1M tokens
- Weights
- closed weights
Token prices USD per 1M tokens
- Input
- $2.00
- Output
- $12.00
- Cached Input
- $0.200
- Cache write
- $2.50
- Cost per task
- $0.632
Capability
- Intelligence
- 38.0
- Coding
- not available
- Agentic
- not available
- Omniscience
- -3.0
- Correct
- 45.5%
- Blended price
- $1.74
Answer outcomes
Fully graded outcomes (Correct + Incorrect): 94.0%
Artificial Analysis benchmarks
- GDPval-AA v2
- 47%
- τ³-Banking
- 30%
- SciCode
- 52%
- Humanity’s Last Exam
- 42%
- GPQA Diamond
- 91%
- CritPt
- 27%
- AA-Omniscience
- 49%
- AA-LCR
- 79%
DeepSWE operational cross-check
- Pass@1
- 60.2%
- Avg steps/scored attempt
- 43.07
- Mean cost/scored attempt (USD)
- $2.13
- Mean output tokens/scored attempt
- 39,616.54
- Mean duration/scored attempt (s)
- 584 s
Mean cost/scored attempt is the official feed's mean_cost_usd: mean benchmark cost in USD per scored attempt under the source's cost basis. It is not Artificial Analysis cost per task and not token price (USD per 1M tokens). Mean output tokens/scored attempt is mean_output_tokens, also averaged over every scored attempt including scored failures. Mean duration/scored attempt is mean_duration_seconds; it is informational only, and wall-clock varies with provider and host load. These three fields do not affect Quality Score, Value Score, or Reliability. Epoch General ECI's benchmark basket includes DeepSWE v1.1, so Epoch General ECI and this DeepSWE cross-check are not independent evidence.
Similar models
- GPT-6 Luna (Max)OpenAIQuality Score 54.5Value Score 49.8
- GPT-5.6 Luna (Max)OpenAIQuality Score 51.1Value Score 43.7
- GPT-5.4 (Xhigh)OpenAIQuality Score 56.4Value Score 36.0
- GPT-5.3 Codex (Xhigh)OpenAIQuality Score 52.7Value Score 34.2
- GPT-6 Luna (Xhigh)OpenAIQuality Score 51.1Value Score 46.7
- GPT-5.5 (Medium)OpenAIQuality Score 55.5Value Score 32.7