Models · Claude
Claude Sonnet 5
Asked for a few hundred random integers, Claude Sonnet 5 does not pick evenly. This page is the shape of that preference, built from 36 recorded answers containing 10688 numbers, and it is what the identify tool compares a pasted reply against.
- Bank id
claude-sonnet-5- Family
- Claude
- Collected through
- API
- Status
- Inherited from ModelTrace; serving identity not independently verified
- Distinct values used
- 355 of 355
- Prompt environments
- 12 of 12
Distribution
Every bar is one value from 1 to 355; its height is how many times the model chose it across all recorded answers. A perfectly random picker would give a flat line. Nothing in the bank does.
Favourite numbers
| Number | Times chosen | Share |
|---|---|---|
| 199 | 119 | 1.11% |
| 178 | 102 | 0.95% |
| 63 | 88 | 0.82% |
| 88 | 83 | 0.78% |
| 289 | 83 | 0.78% |
| 45 | 81 | 0.76% |
| 8 | 79 | 0.74% |
| 296 | 77 | 0.72% |
| 55 | 74 | 0.69% |
| 305 | 73 | 0.68% |
| 33 | 70 | 0.65% |
| 320 | 70 | 0.65% |
How reliably it is recognised
In held-out testing across all twelve prompt environments, 11 of 12 three-answer runs named this model, 0 narrowed it to its family, 1 gave no answer, and 0 named a different model.
With this model removed from the bank and its own answers scored against the rest, 5 of 12 runs still confidently named another model, 2 stopped at the family, and 5 gave no answer. Its answers landed most often on Claude Opus 4.8 (10 of 12). That is the number to keep in mind if you are testing a version that is not listed here.
Both measurements use the open-set verdict the site applies, not the bank's raw ranking. The methodology page explains how they were made and what they leave out.