MiniMax M2.5 - NC Bench

minimax/minimax-m2.5

MiniMax M2.5

via OpenRouter

Release Date

Feb 12th, 2026

Context Size

196k

Reasoning

Yes

Benchmark Cost

$2.55

Speed

60.3 tok/s

Subcategories

Bad Writing Habits

Detects common prose quality anti-patterns in AI-generated creative writing, including passive voice, past progressive overuse, weak dialogue tags, filter words, purple prose, cliches, AI-ism words/adverbs/names, and more.

Scenario	#1	#2	#3	#4	#5	Total
Detailed Writing Rules
Fantasy: entering an ancient ruin Creative Writing Hallucination	79	75	74	72	68	74%
Horror: alone in an eerie place at night Creative Writing Hallucination	85	84	79	77	77	80%
Literary fiction: old friends reunite Creative Writing Hallucination	89	87	87	83	81	85%
Mystery: examining a crime scene Creative Writing Hallucination	88	86	84	83	82	85%
Romance: separated couple reunites Creative Writing Hallucination	89	87	86	85	80	85%
Thriller: chase through city streets Creative Writing Hallucination	89	88	87	86	82	86%
Detailed Writing Rules						82.52%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	84	75	73	71	71	75%
Horror: alone in an eerie place at night Creative Writing Hallucination	84	80	78	77	72	78%
Literary fiction: old friends reunite Creative Writing Hallucination	84	81	80	78	75	80%
Mystery: examining a crime scene Creative Writing Hallucination	87	83	83	81	75	82%
Romance: separated couple reunites Creative Writing Hallucination	81	77	76	74	73	76%
Thriller: chase through city streets Creative Writing Hallucination	84	83	82	80	77	81%
genre						78.68%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	86	79	76	76	66	76%
Horror: alone in an eerie place at night Creative Writing Hallucination	88	85	84	79	79	83%
Literary fiction: old friends reunite Creative Writing Hallucination	85	83	82	76	75	80%
Mystery: examining a crime scene Creative Writing Hallucination	80	80	80	77	76	79%
Romance: separated couple reunites Creative Writing Hallucination	87	83	81	80	76	81%
Thriller: chase through city streets Creative Writing Hallucination	91	88	86	85	81	86%
Novelcrafter Default Prompt						80.96%
80.72%

Codex Extraction

Evaluates a model's ability to extract structured codex entries (characters, locations, objects, lore) from prose passages and return them as well-formed XML.

Scenario	#1	#2	#3	#4	#5	Total
Long: The Spire of Echoes (Dense) Tooling Reasoning	95	94	92	92	91	93%
Medium: The Hollow (Inferred) Tooling Reasoning	96	94	94	94	93	94%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	98	97	96	95	94	96%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	99	97	96	96	89	95%
94.55%

Codex Red Herring (False Positive Detection)

Tests whether models correctly report "no violations" when a codex is fully consistent with the prose passage. Models that hallucinate false violations (false positives) fail. Uses a 2×2 matrix of text length × codex size, with bare and detailed-entry variants.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
basic entries
Long text (~1594 words), big codex (51 entries) Hallucination	100	100	100	100	100	25	25	17	17	10	59%
Long text (~1594 words), small codex (11 entries) Hallucination	100	100	100	100	100	100	100	100	50	25	88%
Short text (~524 words), big codex (51 entries) Hallucination	100	100	100	100	100	100	25	25	25	25	70%
Short text (~524 words), small codex (11 entries) Hallucination	100	100	100	100	100	100	100	100	100	25	93%
basic entries											77.33%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	100	100	100	100	100	100	100	100	25	2	83%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	100	100	100	100	100	100	50	25	25	25	73%
Short text (~524 words), big codex (51 detailed entries) Hallucination	100	100	100	100	100	100	100	100	100	25	93%
Short text (~524 words), small codex (11 detailed entries) Hallucination	100	100	100	100	100	100	100	25	25	25	78%
detailed entries											81.30%
79.32%

Codex Violation Detection

Detects factual inconsistencies between a story bible and prose passages. The model must output structured XML identifying each violation with paragraph number and substring.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
matrix
Large codex (40 entries), long passage (1,019 words) Tooling Reasoning	90	89	87	83	83	81	79	77	76	75	82%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	96	96	93	92	92	91	90	88	85	84	91%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	93	93	90	90	88	88	87	87	84	84	88%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	100	100	97	97	97	92	90	88	88	88	94%
matrix											88.69%
tiers
5 codex entries Tooling Reasoning	100	100	93	91	83	83	83	75	75	75	86%
10 codex entries Tooling Reasoning	100	100	100	100	100	100	100	94	86	86	97%
20 codex entries Tooling Reasoning	94	94	91	89	88	88	86	86	82	81	88%
40 codex entries Tooling Reasoning	97	97	93	93	93	90	90	84	80	79	90%
tiers											90.04%
89.36%

Data extraction

Extract key details from a given block of text.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
All valid emails Utility	100	100	100	100	100	100	100	100	100	100	100%
Contextual pronoun Utility	100	100	100	100	100	100	100	100	100	100	100%
Fruits excluding citrus Utility	100	100	100	100	100	100	100	100	100	100	100%
Future event time Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Guess the pet Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Highest-rated movie Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Indirect birth year Reasoning	100	100	100	100	100	100	100	100	100	100	100%
What instrument does Lucy play? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
What's the color of the car? Utility	100	100	100	100	100	100	100	100	100	100	100%
What's the correct time? Reasoning	100	0	0	0	0	0	0	0	0	0	10%
Who's the sister? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
Who's the tallest? Reasoning	100	100	100	100	100	100	100	100	100	100	100%
92.50%

Dialogue tags

Various tasks related to dialogue tags in text.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
dialogue-200
Write 200 words with 10% dialogue Rule Following Utility	100	100	100	100	76	68	68	56	50	42	76%
Write 200 words with 50% dialogue Rule Following Utility	100	100	100	100	100	100	100	100	100	76	98%
Write 200 words with 90% dialogue Rule Following Utility	100	100	64	59	50	50	50	50	50	50	62%
dialogue-200											78.61%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	100	99	99	98	97	96	52	50	46	0	74%
Write 500 words with 50% dialogue Rule Following Utility	100	100	94	75	63	52	50	50	50	0	63%
Write 500 words with 70% dialogue Rule Following Utility	98	90	77	56	50	50	50	41	33	9	55%
dialogue-500											64.19%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	61	1	86%
73.51%

Language Comprehension

Does the model understand more than just English?

Scenario	#1	#2	#3	#4	#5	Total
Asking for directions (Dutch) Language	100	100	100	100	0	80%
Asking for directions (German) Language	100	100	100	100	100	100%
Friend got new kittens (German) Language	100	100	100	100	100	100%
Friend got new kittens (Tagalog) Language	100	100	100	100	100	100%
95.00%

Language Writing

Can the model generate text in different languages?

Scenario	#1	#2	#3	#4	#5	Total
Character dialogue (French) in a story Language	100	100	100	100	100	100%
Character dialogue (German) in a story Language	100	100	100	100	93	99%
Character dialogue (Hindi) in a story Language	100	100	100	93	53	89%
Character dialogue (Italian) in a story Language	100	100	100	97	96	99%
Character dialogue (Spanish) in a story Language	100	100	100	100	96	99%
97.10%

N-Length Sentences

Write sentences with exactly N words

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Write sentences with 5 words each Utility	100	100	100	100	100	100	100	100	100	100	100%
Write sentences with 10 words each Utility	100	100	100	100	100	100	100	100	100	88	99%
Write sentences with 20 words each Utility	100	100	100	100	100	100	100	100	100	75	98%
98.75%

Novel outline

Handle questions about the outline of a novel in various formats

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
outline-count
Count acts Utility	100	100	100	100	100	100	100	100	100	100	100%
Count chapters Utility	100	100	100	100	100	100	100	100	100	100	100%
Count scenes Utility	100	100	100	100	100	100	100	100	100	0	90%
outline-count											96.67%
pov-count
Count point of views for Jack and Olivia Utility	100	100	100	100	100	100	100	50	50	50	85%
Count point of views for Jack Harper Utility	100	100	100	100	100	100	100	100	100	0	90%
Count point of views for Olivia Utility	100	100	100	100	100	100	100	100	100	100	100%
pov-count											91.67%
94.17%

Text Replacement

Tests deterministic text transformations: renaming characters/locations, expanding contractions, tense rewriting, POV shifts, gender swaps, combined transformations, and word avoidance. Scored by checking each expected change independently.

Scenario	#1	#2	#3	#4	#5	#6	#7	Total
Generic Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	86	98%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	98	100%
Combined: 3rd person past → 1st person present Text Editing	99	99	96	96	96	95	95	97%
Expand all contractions Text Editing	100	100	100	99	99	99	67	95%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	100	100%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	99	99	99	99	97	85	97%
Passive voice → active voice Text Editing Hallucination	97	96	96	95	94	92	91	94%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	98	98	98	99%
Tense rewriting: past to present Text Editing	100	99	96	96	95	95	88	96%
Generic Prompt								97.33%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	100	100%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	100	100%
Combined: 3rd person past → 1st person present Text Editing	99	99	99	99	99	98	94	98%
Expand all contractions Text Editing	100	100	100	100	99	99	98	100%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	100	100%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	99	99	99	99	99	99	99	99%
Passive voice → active voice Text Editing Hallucination	96	96	95	95	94	94	92	95%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	100	100%
Tense rewriting: past to present Text Editing	100	99	99	99	99	99	99	99%
Specific Prompt								99.00%
98.16%

Tool usage within Novelcrafter

Output messages that are related to tool usage within Novelcrafter

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Create alternate prose sections Tooling	100	100	100	100	100	100	100	100	100	67	97%
96.67%

Voice/dialogue sheets

Extract dialogue from given text as voice sheets.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Multiple speakers Rule Following	100	100	100	0	0	0	0	0	0	0	30%
Simple Rule Following	100	100	100	100	100	0	0	0	0	0	50%
Simple (1-shot) 1-shot Rule Following	100	100	100	100	100	0	0	0	0	0	50%
Simple (5-shot) Few-shot Rule Following	100	0	0	0	0	0	0	0	0	0	10%
Unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	100	100%
48.00%

Write N of X

Write exactly N words/sentences/paragraphs...

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
paragraphs
1 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
5 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
paragraphs											100.00%
sentences
1 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
10 sentence summary Utility	100	100	100	100	100	100	100	98	98	92	99%
20 sentence summary Utility	100	100	100	100	98	92	0	0	0	0	59%
50 sentence summary Utility	100	100	0	0	0	0	0	0	0	0	20%
sentences											75.58%
words
10 word summary Utility	100	100	100	100	100	100	100	100	100	98	100%
20 word summary Utility	100	100	100	100	100	100	100	98	98	92	99%
50 word summary Utility	100	100	98	98	92	92	92	92	77	0	84%
100 word summary Utility	100	100	100	100	92	9	0	0	0	0	50%
200 word summary Utility	98	92	0	0	0	0	0	0	0	0	19%
words											70.44%
79.24%