OpenAI

GPT-5.6 Luna

Fast, cheap GPT-5.6 variant built for high-volume production traffic.

#372released Jul 8, 2026·Proprietary·Not disclosed
textimage1.1M ctx
API providersGet API Key →Leaderboard
Intelligence
49.1 #372
AAQI 51.0
Output Speed
175 t/s
TTFT 136 ms · ITL 5.7 ms/tok
Blended price (3:1)
$0.45 /1M
In $0.2/M · Out $1.2/M
Context
1.1M
≈ 2,750 A4 pages · max out 16,384

Quality Domain Radar

6-Axis Frontier Evaluation vs Category Average & Flagship

GPT-5.6 Luna
Claude Mythos Preview (#1)
Average (68)
Coding (45.6)Mathematics (40.3)Hard Science (GPQA) (55.1)Agentic & Tool Use (43.3)Knowledge (MMLU) (15)Vision / Multimodal (36.8)

Radar axes are approximated from category scores where direct benchmark measurements are missing — see Methodology.

API deployment

Compare hosts & latency

Throughput, TTFT and cache pricing across Groq, Cerebras, Together, DeepInfra, Fireworks, Bedrock and Azure.

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Scores by Source

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

Estimated monthly bill

Estimated monthly spend
$0.00
Calculating savings vs GPT-4o...

Cite & embed

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BibTeX
@misc{llmpodium2026gpt56luna,
  title = {Benchmark Analysis and Intelligence Evaluation of GPT-5.6 Luna},
  author = {LLMPodium Research},
  year = {2026},
  url = {https://llmpodium.com/models/gpt-5-6-luna}
}

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GPT-5.6 Luna LLMPodium Score
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