GPT-5.6 Luna
preview
OpenAI2026-06-26
Specifications
Modalities
text
image
Context Window-
Max Output-
Training Cutoff-
Open SourceNo
Pricing (per 1M tokens)
Input$0.2000
Output$1.2000
Cache Read$0.0200
Benchmarks
Arena score (text)1453
Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.
MMLU-Pro-
SWE-Bench-
GPQA Diamond-
HumanEval-
ARC-AGI-
MATH-
API
Sources
- OpenAI Help Center: A preview of GPT-5.6 Sol, Terra, and Luna
general · as of 2026-07-04
- OpenAI: Pricing
price input, price output, price cache read · as of 2026-11-02
- LMArena: Arena leaderboard dataset, text_style_control overall: GPT-5.6 Luna (xHigh)
elo rating · as of 2026-10-28