GPT 5.6 Luna (Fast)
OpenAI
GPT-5.6 Luna is a fast, affordable GPT-5.6 model that brings strong capability at the lowest cost in the series.
- Language
- Reasoning
- File input
- Tool use
- Vision
- Implicit caching
- Web search
- Realtime socket
- Fast
- Context
- 1.1M
- Max output
- 128K
- Input / 1M
- $0.400
- Output / 1M
- $2.40
Quickstart
Point any OpenAI-compatible client at Maxynetic Systems and pass openai/gpt-5.6-luna-fast as the model.
curl https://api.maxynetic.com/v1/chat/completions \
-H "Authorization: Bearer $MAXYNETIC_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.6-luna-fast",
"messages": [{ "role": "user", "content": "Explain routing in one line." }]
}'Pricing
Billed per token with no markup on the underlying provider rate.
Input
Per 1M prompt tokens
$0.400
Output
Per 1M completion tokens
$2.40
Cache read
Per 1M cached prompt tokens
$0.040
Cache write
Per 1M tokens written to cache
$0.250
A 1M-token prompt with 250K tokens of output costs about $1.00.