Mistral NeMO - NC Bench

open-mistral-nemo-2407

Mistral NeMO

via mistral

Release Date

Jul 18th, 2024

Context Size

128k

Reasoning

Benchmark Cost

$0.40

Speed

–

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	74	73	73	73	68	72%
Horror: alone in an eerie place at night Creative Writing Hallucination	79	77	76	70	68	74%
Literary fiction: old friends reunite Creative Writing Hallucination	81	81	75	74	70	76%
Mystery: examining a crime scene Creative Writing Hallucination	82	82	81	80	76	80%
Romance: separated couple reunites Creative Writing Hallucination	82	82	80	73	70	77%
Thriller: chase through city streets Creative Writing Hallucination	87	74	73	70	70	75%
Detailed Writing Rules						75.94%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	80	79	74	67	65	73%
Horror: alone in an eerie place at night Creative Writing Hallucination	84	83	81	69	68	77%
Literary fiction: old friends reunite Creative Writing Hallucination	81	79	78	77	73	78%
Mystery: examining a crime scene Creative Writing Hallucination	87	80	80	80	77	81%
Romance: separated couple reunites Creative Writing Hallucination	82	75	73	71	67	74%
Thriller: chase through city streets Creative Writing Hallucination	83	77	75	75	73	77%
genre						76.44%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	81	71	70	69	67	72%
Horror: alone in an eerie place at night Creative Writing Hallucination	75	74	74	73	71	73%
Literary fiction: old friends reunite Creative Writing Hallucination	81	81	80	77	76	79%
Mystery: examining a crime scene Creative Writing Hallucination	79	78	75	73	72	76%
Romance: separated couple reunites Creative Writing Hallucination	79	77	74	73	72	75%
Thriller: chase through city streets Creative Writing Hallucination	78	78	77	76	74	77%
Novelcrafter Default Prompt						75.22%
75.87%

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	0	0	0	0	0	0%
Medium: The Hollow (Inferred) Tooling Reasoning	0	0	0	0	0	0%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	86	85	83	0	0	51%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	93	90	85	0	0	54%
26.12%

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	4	3	2	2	2	0	0	31%
Long text (~1594 words), small codex (11 entries) Hallucination	100	100	6	4	4	4	4	3	3	1	23%
Short text (~524 words), big codex (51 entries) Hallucination	100	42	30	6	5	5	4	3	2	1	20%
Short text (~524 words), small codex (11 entries) Hallucination	8	7	7	7	6	6	5	5	4	3	6%
basic entries											19.93%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	10	7	5	4	3	1	1	1	0	0	3%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	7	7	6	5	4	4	4	4	3	2	5%
Short text (~524 words), big codex (51 detailed entries) Hallucination	3	3	2	2	1	1	1	0	0	0	1%
Short text (~524 words), small codex (11 detailed entries) Hallucination	8	6	6	5	5	5	4	4	4	3	5%
detailed entries											3.53%
11.73%

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	55	42	41	39	38	37	36	36	35	35	39%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	58	54	44	43	41	39	39	38	38	36	43%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	75	65	65	63	58	58	44	44	0	0	47%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	84	80	80	76	76	76	76	76	76	76	78%
matrix											51.85%
tiers
5 codex entries Tooling Reasoning	83	75	75	75	67	67	60	60	50	44	66%
10 codex entries Tooling Reasoning	79	79	72	72	64	64	64	58	58	53	67%
20 codex entries Tooling Reasoning	65	61	61	53	50	48	47	44	44	42	52%
40 codex entries Tooling Reasoning	72	48	41	38	37	36	35	33	33	0	37%
tiers											55.31%
53.58%

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	50	50	50	50	50	50	50	50	50	55%
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	50	95%
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	0	0	0	0	0	0	0	0	0	0	0%
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	0	0	80%
85.83%

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	69	50	50	26	0	0	0	0	0	0	19%
Write 200 words with 50% dialogue Rule Following Utility	53	50	40	19	1	0	0	0	0	0	16%
Write 200 words with 90% dialogue Rule Following Utility	50	50	50	50	50	50	50	49	47	46	49%
dialogue-200											28.32%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	44	26	6	2	0	0	0	0	0	0	8%
Write 500 words with 50% dialogue Rule Following Utility	32	31	22	20	2	1	0	0	0	0	11%
Write 500 words with 70% dialogue Rule Following Utility	50	43	34	5	0	0	0	0	0	0	13%
dialogue-500											10.67%
Ungrouped
Write unattributed dialogue Rule Following	100	61	61	61	61	61	61	14	1	0	48%
23.55%

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	0	0	60%
Character dialogue (German) in a story Language	100	100	33	0	0	47%
Character dialogue (Hindi) in a story Language	100	100	100	100	0	80%
Character dialogue (Italian) in a story Language	100	100	100	100	0	80%
Character dialogue (Spanish) in a story Language	100	100	92	40	0	66%
66.60%

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	72	47	45	37	35	22	21	17	1	1	30%
Write sentences with 10 words each Utility	57	48	45	24	24	15	14	11	10	9	26%
Write sentences with 20 words each Utility	2	0	0	0	0	0	0	0	0	0	0%
18.57%

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	50	50	50	0	0	0	0	0	35%
Count point of views for Jack Harper Utility	100	100	100	100	0	0	0	0	0	0	40%
Count point of views for Olivia Utility	100	100	100	100	0	0	0	0	0	0	40%
pov-count											38.33%
67.50%

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	97	94	94	94	94	92	89	94%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	98	98	58	93%
Combined: 3rd person past → 1st person present Text Editing	88	86	80	79	79	78	77	81%
Expand all contractions Text Editing	99	98	98	98	98	98	98	98%
Location rename: market square, outer ring, bridge, northern mines Text Editing	89	67	63	60	60	56	54	64%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	74	74	74	74	74	74	74	74%
Passive voice → active voice Text Editing Hallucination	63	52	49	32	24	20	17	37%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	85	81	81	68	63	44	41	66%
Tense rewriting: past to present Text Editing	99	99	98	98	98	97	96	98%
Generic Prompt								78.28%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	92	92	92	92	83	81	61	85%
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	99	93	98%
Expand all contractions Text Editing	99	99	99	99	99	96	94	98%
Location rename: market square, outer ring, bridge, northern mines Text Editing	96	96	96	96	96	96	93	95%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	100	100	100	100	100	100	100%
Passive voice → active voice Text Editing Hallucination	88	85	78	78	78	78	78	80%
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	99	99	99	99	99	99	99	99%
Specific Prompt								94.99%
86.64%

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	0	0	0	0	0	0	0	0	0	0	0%
Simple Rule Following	0	0	0	0	0	0	0	0	0	0	0%
Simple (1-shot) 1-shot Rule Following	100	100	100	100	0	0	0	0	0	0	40%
Simple (5-shot) Few-shot Rule Following	100	100	100	100	100	100	0	0	0	0	60%
Unattributed dialogue Rule Following	100	0	0	0	0	0	0	0	0	0	10%
22.00%

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	0	0	0	0	0	0	0	0	0	10%
5 paragraph summary Utility	100	0	0	0	0	0	0	0	0	0	10%
paragraphs											40.00%
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	77	77	54	54	54	27	9	9	9	9	38%
20 sentence summary Utility	0	0	0	0	0	0	0	0	0	0	0%
50 sentence summary Utility	0	0	0	0	0	0	0	0	0	0	0%
sentences											47.57%
words
10 word summary Utility	100	98	98	77	77	77	27	0	0	0	56%
20 word summary Utility	92	0	0	0	0	0	0	0	0	0	9%
50 word summary Utility	100	100	92	77	54	27	2	0	0	0	45%
100 word summary Utility	0	0	0	0	0	0	0	0	0	0	0%
200 word summary Utility	0	0	0	0	0	0	0	0	0	0	0%
words											22.01%
35.99%