All models
OpenAI
GPT-5.6 Luna Pro
Luna with better coding and instruction following, at the same low price as plain Luna. Good for cheap code help and structured tasks over 1M context. GPT-6 Luna is newer and about half the price.
MainstreamThe big labs' models with their own safety filters. Best for work, code and research.
Smart & Cheap
Intelligence
~0.65 credits
Estimated price per message
1.1M tokens
Context window
Text, Images
Reads
GPT-5.6 Luna Pro is a legacy model. Its successor, GPT-6 Luna, is faster or cheaper - and chats that used GPT-5.6 Luna Pro move to it automatically.
See GPT-6 LunaThe facts
Made by
OpenAI
Content tier
MainstreamThe big labs' models with their own safety filters. Best for work, code and research.
Intelligence
Smart & Cheap
Estimated price per message
~0.65 credits≈ 153 messages for 1 €
Context window
1.1M tokens≈ 1,615 pages of text in one go
Reads
Text, Images
Writes
Text
Tool use
Yes - search, memory, code and more
Served via
OpenRouter, Unbottled AI
Status
Legacy
A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = 0.01 €.
Compare GPT-5.6 Luna Pro
Same facts, side by side.
Try GPT-5.6 Luna Pro now.
No subscription. Free credits to start. The chat opens with GPT-5.6 Luna Pro selected and a prompt ready - just send.