GPT-5.6 Luna Pro
OpenAI · Mid · Multimodal
GPT-5.6 Luna with reasoning mode set to "pro" for more deliberate problem-solving on complex tasks.
- Strengths
- Allocates additional computational effort to reasoning through difficult problems, producing more thorough analysis on complex queries.
- Best for
- Tasks requiring deep reasoning, multi-step problem-solving, and high-confidence answers where latency is acceptable.
- Limitations
- Takes longer to respond than standard reasoning modes due to increased computation; not suitable for applications requiring low latency.
Input / 1M
$1.00
Output / 1M
$6.00
Cached input / 1M
$0.1
Context window
1.05M
Also billed
- Cache write
- $1.25 / 1M
Flagship prices over time
Every provider's most-powerful model, priced at launch, charted on one log axis.
Price history
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 10 Jul 2026 | $1.00 | $6.00 | $0.1 | Imported from OpenRouter | openrouter.ai |