Seed 1.6 Flash Behavioral Fingerprint
How ByteDance Seed's Seed 1.6 Flash answers one-word probe questions at temperature 1.0 — random numbers, colors, animals, coin flips — measured over 417 valid samples in the open dataset of "One Token Is Enough" (arXiv:2607.10252).
Vendor
ByteDance Seed
Data generated
2026-07-08
Probe cells
15
Valid samples
417
Randomness score
28 / 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
16 / 30 answers
Favorite color
cyan
9 / 30 answers
Coin flip: heads
80%
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 = 21 · H = 0.92 bit · uniform baseline 1.00 bit
| Answer | Count | Share |
|---|---|---|
| heads | 14 | 66.7% |
| tails | 7 | 33.3% |
Coin flip · Chinese
n = 14 · H = 0.00 bit · uniform baseline 1.00 bit
| Answer | Count | Share |
|---|---|---|
| heads | 14 | 100.0% |
Favorite number · English
n = 30 · H = 0.00 bit · uniform baseline 13.29 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 30 | 100.0% |
Favorite number · Chinese
n = 30 · H = 0.00 bit · uniform baseline 13.29 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 30 | 100.0% |
Random animal · English
n = 27 · H = 2.92 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| quokka | 7 | 25.9% |
| fennec | 5 | 18.5% |
| axolotl | 5 | 18.5% |
| okapi | 3 | 11.1% |
| koala | 2 | 7.4% |
| fossa | 1 | 3.7% |
| aardvark | 1 | 3.7% |
| anteater | 1 | 3.7% |
+ 2 more answers
Random animal · Chinese
n = 29 · H = 0.99 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| 章鱼 | 24 | 82.8% |
| 树袋熊 | 2 | 6.9% |
| 鸵鸟 | 1 | 3.4% |
| 树懒 | 1 | 3.4% |
| 蝾螈 | 1 | 3.4% |
Random city · English
n = 27 · H = 1.05 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| paris | 22 | 81.5% |
| tokyo | 2 | 7.4% |
| santiago | 1 | 3.7% |
| sydney | 1 | 3.7% |
| sao | 1 | 3.7% |
Random city · Chinese
n = 29 · H = 2.23 bit · uniform baseline 5.64 bit
| Answer | Count | Share |
|---|---|---|
| 北京 | 15 | 51.7% |
| 巴黎 | 6 | 20.7% |
| 柏林 | 2 | 6.9% |
| 芝加哥 | 1 | 3.4% |
| 里约热内卢 | 1 | 3.4% |
| 首尔 | 1 | 3.4% |
| 孟买 | 1 | 3.4% |
| 东京 | 1 | 3.4% |
+ 1 more answers
Random color · English
n = 30 · H = 2.89 bit · uniform baseline 4.91 bit
| Answer | Count | Share |
|---|---|---|
| cyan | 9 | 30.0% |
| cerulean | 8 | 26.7% |
| amber | 2 | 6.7% |
| violet | 2 | 6.7% |
| purple | 2 | 6.7% |
| aquamarine | 2 | 6.7% |
| bermuda | 1 | 3.3% |
| azure | 1 | 3.3% |
+ 3 more answers
Random color · Chinese
n = 30 · H = 2.34 bit · uniform baseline 4.91 bit
| Answer | Count | Share |
|---|---|---|
| 紫 | 13 | 43.3% |
| 天蓝 | 6 | 20.0% |
| 靛蓝 | 3 | 10.0% |
| 蓝 | 3 | 10.0% |
| 橙 | 2 | 6.7% |
| 青 | 2 | 6.7% |
| 绿 | 1 | 3.3% |
Random letter · English
n = 30 · H = 1.64 bit · uniform baseline 4.70 bit
| Answer | Count | Share |
|---|---|---|
| q | 14 | 46.7% |
| x | 10 | 33.3% |
| k | 5 | 16.7% |
| z | 1 | 3.3% |
Random number 1-10 · English
n = 30 · H = 0.35 bit · uniform baseline 3.32 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 28 | 93.3% |
| 3 | 2 | 6.7% |
Random number 1-10 · Chinese
n = 30 · H = 0.00 bit · uniform baseline 3.32 bit
| Answer | Count | Share |
|---|---|---|
| 7 | 30 | 100.0% |
Random number 1-100 · English
n = 30 · H = 1.17 bit · uniform baseline 6.64 bit
| Answer | Count | Share |
|---|---|---|
| 42 | 16 | 53.3% |
| 73 | 13 | 43.3% |
| 37 | 1 | 3.3% |
Random number 1-100 · Chinese
n = 30 · H = 1.67 bit · uniform baseline 6.64 bit
| Answer | Count | Share |
|---|---|---|
| 53 | 19 | 63.3% |
| 42 | 5 | 16.7% |
| 73 | 3 | 10.0% |
| 37 | 1 | 3.3% |
| 57 | 1 | 3.3% |
| 63 | 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.