Model detail
GPT-5.6 Luna
Provider: OpenAI · Public slug: gpt-5-6-luna
- Rank
- 20
- Rank movement
- Baseline
- Score
- 32.3
- Last measured
- 2026-07-13
- Coverage
- Complete coverage
Reasoning scores
- XHigh
- 55.0
- Medium
- 30.2
- None
- 11.6
Generation health
XHigh78%11%11%n 9Medium89%0%11%n 9None88%12%0%n 8 Complete coverageCost summary
- Mean standard list-price equivalent
- $1.07
- Median unique-cell cost
- $0.04
- Unique-cell range
- $0.02–$4.99
- Coverage
- 24 unique cells / 26 observed runs
- Observed-run total
- $29.30
- Evidence basis
- Standard list-price estimate
- Mean output
- 186k tok
- Output range
- 1.5k–830k tok
- Token samples
- 26
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