GPT-5.6 Luna Pro (batch)
OpenAI · Multimodal · Released Jul 2026
GPT-5.6 Luna Pro is OpenAI's lightweight model in the GPT-5.6 series, served with pro-level reasoning mode for higher-quality responses on complex tasks.
- Strengths
- Delivers reasoning-focused accuracy on complex problems while maintaining the speed and efficiency advantages of the Luna tier, with a 1.05M token context window.
- Best for
- Batch processing of complex reasoning tasks where the speed-to-capability ratio of Luna is suitable but pro-level reasoning quality is needed.
- Limitations
- Positioned below GPT-5.6 Sol Pro for maximum reasoning capability; intended for problems that fit Luna's tier but benefit from enhanced reasoning rather than for flagship reasoning workloads.
Input / 1M
$0.1
Output / 1M
$0.6
Cached input / 1M
$0.01
Context window
1.05M
Price history
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 17 Aug 2026 | $0.1 | $0.6 | $0.01 | Imported from OpenRouter | openrouter.ai |