Models · GPT
GPT-5.6 Luna
Asked for a few hundred random integers, GPT-5.6 Luna does not pick evenly. This page is the shape of that preference, built from 36 recorded answers containing 12775 numbers, and it is what the identify tool compares a pasted reply against.
- Bank id
gpt-5.6-luna- Family
- GPT
- Collected through
- API
- Collected on
- Not recorded upstream
- Status
- Inherited from ModelTrace; serving identity not independently verified
- Distinct values used
- 355 of 355
- Prompt environments
- 12 of 12
Capability and price
- Sold by
- OpenAI
- Intelligence index
- 37 · v4.3.2, scored as max
- Index rank
- Not ranked — the index marks this configuration superseded by GPT-6 Luna.
- Input, per 1M tokens
- 0.20
- Output, per 1M tokens
- 1.20
- Blended, per 1M tokens
- 0.45
- Price rank
- Not ranked
- Context window
- 1,000,000 tokens
Read on 2026-10-02, not measured here: index page · price page
Distribution
Selected number 346
| Model | Times chosen | Share |
|---|---|---|
| GPT-5.6 Luna | 68 | 0.53% |
Favourite numbers
| Number | Times chosen | Share |
|---|---|---|
| 346 | 68 | 0.53% |
| 347 | 62 | 0.49% |
| 306 | 61 | 0.48% |
| 319 | 61 | 0.48% |
| 278 | 56 | 0.44% |
| 279 | 55 | 0.43% |
| 289 | 55 | 0.43% |
| 326 | 55 | 0.43% |
| 333 | 55 | 0.43% |
| 246 | 52 | 0.41% |
| 340 | 52 | 0.41% |
| 316 | 51 | 0.40% |
How reliably it is recognised
In held-out testing across all twelve prompt environments, 12 of 12 three-answer runs named this model with a clear margin, 0 were close calls inside its family, 0 had only a weak match, and 0 named a different model with a clear margin.
With this model removed from the bank and its own answers scored against the rest, 0 of 12 runs still named another model with a clear margin, 1 were close calls inside the family, and 11 had only a weak match. Its answers landed most often on GPT-6 Luna (11 of 12). That is the number to keep in mind if you are testing a version that is not listed here.
Both measurements count the status the site attaches to the first-ranked model, not the bare ranking alone. The methodology page explains how they were made and what they leave out.