Tencent: Hy4 preview
tencent/hy4-preview · TencentNot yet established- Declared family
- Unknown
- Entered catalogue
- 28 August 2026
- Last tested
- 5 October 2026
- Measured signature
- tk_5e7942ae
Identity statement
Tencent: Hy4 preview has a clean measured fingerprint that currently sits alone: no other measured model shares its signature.
What we checked
Four different kinds of evidence, and what each one showed| We checked | What we found | Where it came from |
|---|---|---|
| How it counts tokens | Counted cleanly, and no other model in the catalogue counts the same way | tk_5e7942ae |
| How its API is set up | A combination of settings no other listing in the catalogue uses | api_8d2fc6d5 |
| How much it can read and write | Reads up to 1,048,576 tokens at once, writes up to 64,000 | its own listing |
| Whether it thinks before answering | Reasons when asked to, at high, low, none, high by default | its own listing |
| Who served our requests | SiliconFlow | we measured it, 5 October 2026 |
| Measured twice | The 5 October 2026 reading agreed with the 3 September 2026 reading on every one of the 50 strings clean in both: the tokenizer behind this name held. | 50/50 agree |
Closest measured models
Agreement across the mutually clean test stringsDeepSeek: DeepSeek V4 Pro 0813deepseek/deepseek-v4-pro-081328/50 · 56%DeepSeek: DeepSeek V4 Flash Vision Expdeepseek/deepseek-v4-flash-vision-exp28/50 · 56%Tencent: Hy-MT2-1.8Btencent/hy-mt2-1.8b28/50 · 56%DeepSeek: DeepSeek V4 Flash 0731deepseek/deepseek-v4-flash-073128/50 · 56%DeepSeek: DeepSeek V4 Flash 0423deepseek/deepseek-v4-flash28/50 · 56%Tencent: Hy-MT2-30B-A3Btencent/hy-mt2-30b-a3b28/50 · 56%
Click a row to open the full comparison.
The measured fingerprint
What each test string cost this model, in tokensWe sent Tencent: Hy4 preview fifty short pieces of text and recorded what each one cost it in tokens. The bars below are those costs. Two models built on the same tokenizer produce the same bars; a model built on a different one produces a different set, which is what makes this a fingerprint.
All 50 rows
English and whitespace
en-prose14
en-long17
spaces-204
spaces-606
tabs-2011
newlines-207
mixed-ws7
Digits
digits-93
digits-124
digits-3010
digits-sep7
float-long9
CJK
zh-common8
zh-long10
zh-rare18
ja-kana10
ja-kanji11
ko12
Other scripts
ru13
ar12
he14
hi17
th14
el20
Emoji
emoji-basic10
emoji-skin14
emoji-zwj-family11
emoji-zwj-x333
emoji-flags16
emoji-prof19
Rare Unicode
math27
boxdraw28
combining10
cjk-ext-b16
surrogates41
zalgo36
rtl-mix7
Code
py-code25
py-indent16
json20
html16
regex46
camel6
snake6
Repetition and encodings
rare-word-x531
repeat-tok41
base6435
hex12
url17
uuid27
Overhead subtracted: 21 prompt tokens.
Declared record
What the catalogue claims about this modelTencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and productivity tasks that...
- Modalities
- text->text
- Declared tokenizer
- Other
- Prompt price
- $0.75 / M tokens
- Completion price
- $2.25 / M tokens
Supported parameters
frequency_penaltyinclude_reasoninglogit_biasmax_completion_tokensmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_p
defaults: {}
History
Every observation, kept as taken- 28 August 2026Enters the OpenRouter catalogue with no declared family.
- 3 September 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
- 5 October 2026Fingerprinted again, to check the reading held · 50 of 50 strings measured clean.
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