Hunyuan A13B Instruct Behavioral Fingerprint
How Tencent's Hunyuan A13B Instruct answers one-word probe questions at temperature 1.0 — random numbers, colors, animals, coin flips — measured over 448 valid samples in the open dataset of "One Token Is Enough" (arXiv:2607.10252).
Vendor
Tencent
Data generated
2026-07-08
Probe cells
15
Valid samples
448
Randomness score
18 / 100
Mean normalized entropy across cells, 0–100. 100 would be a uniform-random baseline; real models score far lower.
Signature answers
Favorite random number (1–100)
42
28 / 30 answers
Favorite color
blue
17 / 30 answers
Coin flip: heads
100%
Share of heads across coin-flip cells.
Answer distributions by probe cell
Empirical distributions of normalized one-word answers, per task and language. H is the Shannon entropy in bits; the uniform baseline is log2 of the answer-domain size.
Coin flip · English
n = 30 · H = 0.00 bit · uniform baseline 1.00 bit
| Answer | Count | Share |
|---|---|---|
| heads | 30 | 100.0% |
Coin flip · Chinese
n = 29 · H = 0.00 bit · uniform baseline 1.00 bit
| Answer | Count | Share |
|---|---|---|
| heads | 29 | 100.0% |
Favorite number · English
n = 30 · H = 1.70 bit · uniform baseline 13.29 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 13 | 43.3% |
| 42 | 13 | 43.3% |
| 0 | 1 | 3.3% |
| 4 | 1 | 3.3% |
| 8 | 1 | 3.3% |
| 123 | 1 | 3.3% |
Favorite number · Chinese
n = 30 · H = 0.21 bit · uniform baseline 13.29 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 29 | 96.7% |
| 1 | 1 | 3.3% |
Random animal · English
n = 30 · H = 2.29 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| giraffe | 14 | 46.7% |
| kangaroo | 5 | 16.7% |
| tiger | 5 | 16.7% |
| penguin | 2 | 6.7% |
| lion | 1 | 3.3% |
| match | 1 | 3.3% |
| zebra | 1 | 3.3% |
| elephant | 1 | 3.3% |
Random animal · Chinese
n = 30 · H = 2.75 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| 熊猫 | 12 | 40.0% |
| 树懒 | 5 | 16.7% |
| 猫 | 4 | 13.3% |
| 企鹅 | 2 | 6.7% |
| 变色龙 | 1 | 3.3% |
| 订书机 | 1 | 3.3% |
| 思想 | 1 | 3.3% |
| 大象 | 1 | 3.3% |
+ 3 more answers
Random city · English
n = 29 · H = 2.05 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| tokyo | 13 | 44.8% |
| paris | 9 | 31.0% |
| toronto | 3 | 10.3% |
| chicago | 1 | 3.4% |
| 奇亚雅 | 1 | 3.4% |
| istanbul | 1 | 3.4% |
| 机制 | 1 | 3.4% |
Random city · Chinese
n = 30 · H = 1.57 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| 巴黎 | 21 | 70.0% |
| 北京 | 4 | 13.3% |
| 多伦多 | 1 | 3.3% |
| 上海 | 1 | 3.3% |
| 东京 | 1 | 3.3% |
| 伦敦 | 1 | 3.3% |
| 巴塞罗那 | 1 | 3.3% |
Random color · English
n = 30 · H = 1.64 bit · uniform baseline 4.91 bit
| Answer | Count | Share |
|---|---|---|
| blue | 17 | 56.7% |
| purple | 9 | 30.0% |
| red | 1 | 3.3% |
| bleak | 1 | 3.3% |
| cyan | 1 | 3.3% |
| orange | 1 | 3.3% |
Random color · Chinese
n = 30 · H = 0.92 bit · uniform baseline 4.91 bit
| Answer | Count | Share |
|---|---|---|
| 蓝 | 20 | 66.7% |
| 紫 | 10 | 33.3% |
Random letter · English
n = 30 · H = 0.56 bit · uniform baseline 4.70 bit
| Answer | Count | Share |
|---|---|---|
| x | 27 | 90.0% |
| q | 2 | 6.7% |
| u | 1 | 3.3% |
Random number 1-10 · English
n = 30 · H = 0.00 bit · uniform baseline 3.32 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 30 | 100.0% |
Random number 1-10 · Chinese
n = 30 · H = 0.81 bit · uniform baseline 3.32 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 25 | 83.3% |
| 5 | 3 | 10.0% |
| 3 | 2 | 6.7% |
Random number 1-100 · English
n = 30 · H = 0.35 bit · uniform baseline 6.64 bit
| Answer | Count | Share |
|---|---|---|
| 42 | 28 | 93.3% |
| 73 | 2 | 6.7% |
Random number 1-100 · Chinese
n = 30 · H = 0.21 bit · uniform baseline 6.64 bit
| Answer | Count | Share |
|---|---|---|
| 42 | 29 | 96.7% |
| 37 | 1 | 3.3% |
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Distributions: Tomáš Bruckner, "One Token Is Enough" (arXiv:2607.10252), official dataset Zenodo DOI 10.5281/zenodo.21278557, licensed CC-BY-4.0. Collected via OpenRouter at temperature 1.0 under the paper's fixed minimal one-word system prompt; answer keys are re-normalized with the checker's pipeline (color aliases, number words, coin h/t) so live probes are directly comparable.