OpenAI
OpenAI: GPT-5.6 Luna (batch)
openai/gpt-5.6-luna:batch
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 its price tier.
Input
$0.1
/ 1M tokens
Output
$0.6
/ 1M tokens
Context window
1.05M
tokens
Limits
Context
1,050,000
tokens
Max output
128,000
12% of the context window
Model facts
Author
OpenAI
Tokenizer
GPT
Modality
Text + Image + File -> Text
Knowledge cutoff
2026-02-16
Created
Jul 9, 2026
Reasoning
Default MediumMaxXhighHighMediumLowNone
Publication status
Hugging Face: not mappedLicense: not publishedParameter count: not published
Modalities
Input · FileInput · ImageInput · TextOutput · Text
Generation controls
Include reasoningMax tokensReasoningReasoning effortResponse formatSeedStructured outputsTool choiceToolsVerbosity
Capability scores
42.1
Agentic index
Better than 76% of models compared
71.4
Coding index
Better than 76% of models compared
37.3
Intelligence index
Better than 78% of models compared