MiniMax: MiniMax M2

minimax/minimax-m2 · MiniMaxTokenizer lineage measured
Tokenizer group (measured)
MiniMax
Evidence confidence
High
Why high: an exact fingerprint shared with 6 models.
Declared tokenizer tag
Other
Entered catalogue
23 October 2025
Last tested
21 August 2026
Measurement
Measured
Evidence
  • exact tokenizer signature shared with 6 models

Identity statement

MiniMax: MiniMax M2 is MiniMax's model, and its measured tokenizer sits in MiniMax's own signature group alongside its sibling models. No other maker's measured model shares it so far.

Evidence stack

Signals of different kinds, weighed together
SignalResultReference
Tokenizer signatureExact match with 6 other modelstk_9f84b5fb
API surfaceNo other entry shares this exact contractapi_90d8d829
Context and output204,800 context · 131,072 max outputdeclared
Reasoning contractMandatorydeclared
Serving providers observedMinimaxmeasured 21 August 2026

Shares this fingerprint

Exact signature first; template-boundary shifts of the same signature beneath

Closest measured models

Agreement across the mutually clean test strings

Click a row to open the full comparison.

The measured fingerprint

Marginal prompt-token cost of each test string, grouped by script
All 50 rows

English and whitespace

en-prose14
en-long16
spaces-203
spaces-603
tabs-204
newlines-204
mixed-ws6

Digits

digits-93
digits-124
digits-3010
digits-sep7
float-long9

CJK

zh-common10
zh-long11
zh-rare18
ja-kana7
ja-kanji9
ko11

Other scripts

ru14
ar9
he21
hi20
th25
el22

Emoji

emoji-basic10
emoji-skin12
emoji-zwj-family11
emoji-zwj-x333
emoji-flags16
emoji-prof18

Rare Unicode

math27
boxdraw25
combining6
cjk-ext-b16
surrogates41
zalgo34
rtl-mix9

Code

py-code25
py-indent15
json20
html16
regex45
camel6
snake6

Repetition and encodings

rare-word-x531
repeat-tok41
base6432
hex11
url17
uuid27

An x marks a row excluded as corrupt (caching or provider interference detected during measurement). Overhead subtracted: 39 prompt tokens.

Declared record

What the catalogue claims about this model

MiniMax-M2 is a compact, high-efficiency large language model optimized for end-to-end coding and agentic workflows. With 10 billion activated parameters (230 billion total), it delivers near-frontier intelligence across general reasoning,...

Modalities
text->text
Declared tokenizer
Other
Prompt price
$0.26 / M tokens
Completion price
$1.02 / M tokens

Supported parameters

frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

defaults: {"temperature":1,"top_p":0.95,"frequency_penalty":null}

Catalogue entryWeights on Hugging Face

History

Every observation, kept as taken
  • 23 October 2025Enters the OpenRouter catalogue with no declared family.
  • 21 August 2026Fingerprinted in the YFarmX catalogue sweep · 50 of 50 strings measured clean.
  • 21 August 2026YFarmX assessment: consistent with the MiniMax family, high confidence.

Cite this page as the evidence record for MiniMax: MiniMax M2: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.