Skip to content

GPT-5.6 Luna Pro

ModelActive
by OpenAI · family “gpt-luna-pro”

GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode (description from the OpenRouter listing)

in: filein: imagein: textout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Listing ↗
Released
9 Jul 2026
Context window
1.05M tokens
Max output
128K tokens
Input $ / 1M tokens
$0.20
Output $ / 1M tokens
$1.20
Cached input $ / 1M
$0.020
Each benchmark shown separately with its own source

Benchmark results (0)

All benchmarks
No benchmark results recorded for this model.

Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.

API list price over time

Price history

$ per 1M tokens

4 recorded prices on 17 Jul 2026 (OpenRouter listing + Internet Archive snapshots); re-read on every data refresh, most recently 10h ago. Steps show when the price changed.

Events