Model detail
GPT-5.6 Terra
Provider: OpenAI · Public slug: gpt-5-6-terra
- Rank
- 10
- Rank movement
- Baseline
- Score
- 40.9
- Last measured
- 2026-07-13
- Coverage
- Complete coverage
Reasoning scores
- XHigh
- 51.8
- Medium
- 37.8
- None
- 33.1
Generation health
XHigh63%37%0%n 8Medium63%37%0%n 8None78%11%11%n 9 Complete coverageCost summary
- Mean standard list-price equivalent
- $2.80
- Median unique-cell cost
- $0.16
- Unique-cell range
- $0.05–$12.14
- Coverage
- 24 unique cells / 25 observed runs
- Observed-run total
- $67.27
- Evidence basis
- Standard list-price estimate
- Mean output
- 178k tok
- Output range
- 2.4k–806k tok
- Token samples
- 25
Cost means equal-weight unique model/game/reasoning cells. Provider-account billed spend is reported separately on Charts.
Run setup
- Overall Models: combines public reasoning variants
- Standard GameBench code-generation prompt