OpenAI: GPT-5.6 Lunaopenai
Bottom Line
OpenAI: GPT-5.6 Luna: $0.20/1M input, $1.20/1M output, 1.1M context, CPS grade A. GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
API Pricing (per 1M tokens)
| Input | $0.20 |
| Output | $1.20 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $0.45 |
Specs & Performance
| Context Length | 1.1M |
| Max Output | 128K |
| Intelligence | 37 |
| Coding | 71 |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | A |
| Input / Output Modalities | file, image, text → text |
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FAQ
How much does the OpenAI: GPT-5.6 Luna API cost?
OpenAI: GPT-5.6 Luna costs $0.20/1M input tokens and $1.20/1M output tokens. Blended cost at a 3:1 ratio is about $0.45/1M tokens.
What is the context window of OpenAI: GPT-5.6 Luna?
OpenAI: GPT-5.6 Luna supports a 1.1M token context window with up to 128K output tokens.
Is OpenAI: GPT-5.6 Luna worth it?
OpenAI: GPT-5.6 Luna has a CPS grade of A (score 69), intelligence index 37, coding index 71. Use the compare page to benchmark against rivals.