GPT-5.6 Luna
language modelOpenAI
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...
Key facts
| Made by | OpenAI |
|---|---|
| Type | language model |
| Released | July 9, 2026 |
| Reads at once | 1,050,000 tokens |
| Price (API, per million tokens) | $0.2 in · $1.2 out |
| Input → output | file, image, text → text |
Questions about GPT-5.6 Luna
Who makes GPT-5.6 Luna?
GPT-5.6 Luna is made by OpenAI.
When was GPT-5.6 Luna released?
We first saw GPT-5.6 Luna listed on July 9, 2026.
How much does GPT-5.6 Luna cost?
Through OpenRouter it costs $0.2 per million input tokens and $1.2 per million output tokens. Prices change, so check the provider before you build on it.
How much text can GPT-5.6 Luna read at once?
Up to 1,050,000 tokens, roughly 787.5K words.
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