OpenAI: GPT-5.6 Luna
openai/gpt-5.6-luna
How it compares
Overview
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...
Benchmarks
independent · Artificial Analysis & Design ArenaProviders & pricing (5)
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| OpenAI | $1.00 | $6.00 | 1.1M | 100% |
| OpenAI | $0.500 | $3.00 | 1.1M | 100% |
| OpenAI | $2.00 | $12.00 | 1.1M | 100% |
| Azure | $1.00 | $6.00 | 1.1M | — |
| Azure | $1.10 | $6.60 | 1.1M | — |
Specifications
GPT-5.6 Luna FAQ
How much does GPT-5.6 Luna cost?
GPT-5.6 Luna costs $1.00 per million input tokens and $6.00 per million output tokens via OpenRouter, making it 203rd cheapest of 306 paid models.
How smart is GPT-5.6 Luna?
GPT-5.6 Luna scores 51.2 on the Artificial Analysis Intelligence Index, ranking 10th of 153 benchmarked models, with a GPQA Diamond score of 91%.
How fast is GPT-5.6 Luna?
GPT-5.6 Luna generates around 80 tokens per second with 1.5s time-to-first-token (p50), the 97th fastest tracked model.
What is GPT-5.6 Luna's context window?
GPT-5.6 Luna supports a 1.1M-token context window and can output up to 128K tokens. It accepts file, image, text input.