GPT-5.6 Luna
OpenAI · released Jul 8, 2026
Fast, cheap GPT-5.6 variant built for high-volume production traffic.
49.1
Podium Score
#311 of 673
1450
Arena Elo
59 on Arena
175 t/s
Output Speed
$1.2/M
Output Price
$0.2/M in
1.1M
Context Window
Scores by Source
Category Scores
💰 Value99.8
📜 Long Context56.6
🧠 Reasoning55.1
intelligence52.3
💻 Coding45.6
🤖 Agentic43.3
📐 Math40.3
⚡ Speed39.5
👁️ Multimodal36.8
📚 Knowledge-10.3
Benchmark Results
GPQA Diamond92.3%
Browsecomp83.3%
FrontierMath78.6%
MMMU-Pro78.4%
SWE-Bench Pro62.7%
Toolathlon53.4%
SciCode52.5%
MRCR v241.3%
Humanity’s Last Exam37.2%
Model Details
| Release date | Jul 8, 2026 |
|---|---|
| Parameters | Not disclosed |
| License | Proprietary |
| Context Window | 1,100,000 tokens |
| Input Price | $0.2/M |
| Output Price | $1.2/M |
| Output Speed | 175 t/s |
| Time to First Token | 136 ms |