Inception Mercury

inception/mercury

Inception Mercury

via OpenRouter

Release Date

Jun 25th, 2025

Context Size

128k

Reasoning

Benchmark Cost

$1.23

Speed

165.8 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	68	68	68	65	65	67%
Horror: alone in an eerie place at night Creative Writing Hallucination	67	65	62	61	61	63%
Literary fiction: old friends reunite Creative Writing Hallucination	74	73	67	67	64	69%
Mystery: examining a crime scene Creative Writing Hallucination	75	72	69	66	60	68%
Romance: separated couple reunites Creative Writing Hallucination	77	74	70	68	65	71%
Thriller: chase through city streets Creative Writing Hallucination	76	71	71	69	67	71%
Detailed Writing Rules						68.11%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	63	63	58	56	55	59%
Horror: alone in an eerie place at night Creative Writing Hallucination	67	62	59	55	55	60%
Literary fiction: old friends reunite Creative Writing Hallucination	74	72	72	66	66	70%
Mystery: examining a crime scene Creative Writing Hallucination	69	68	65	63	61	65%
Romance: separated couple reunites Creative Writing Hallucination	74	71	66	62	61	67%
Thriller: chase through city streets Creative Writing Hallucination	71	71	71	66	64	69%
genre						64.87%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	68	67	66	64	63	66%
Horror: alone in an eerie place at night Creative Writing Hallucination	76	66	64	64	61	66%
Literary fiction: old friends reunite Creative Writing Hallucination	79	76	75	75	66	74%
Mystery: examining a crime scene Creative Writing Hallucination	79	78	75	73	59	73%
Romance: separated couple reunites Creative Writing Hallucination	77	74	73	70	66	72%
Thriller: chase through city streets Creative Writing Hallucination	71	71	66	64	61	67%
Novelcrafter Default Prompt						69.53%
67.50%

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	88	86	83	81	81	84%
Medium: The Hollow (Inferred) Tooling Reasoning	90	90	84	83	80	85%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	87	86	85	84	75	83%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	90	89	87	82	81	86%
84.53%

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	100	100	100	100	25	93%
Long text (~1594 words), small codex (11 entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
Short text (~524 words), big codex (51 entries) Hallucination	100	100	100	100	100	100	100	100	100	25	93%
Short text (~524 words), small codex (11 entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
basic entries											96.25%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
Short text (~524 words), big codex (51 detailed entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
Short text (~524 words), small codex (11 detailed entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
detailed entries											100.00%
98.13%

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	81	73	72	70	66	62	61	61	57	46	65%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	95	86	83	80	76	76	71	71	69	62	77%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	84	84	80	80	79	77	75	75	75	55	76%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	100	97	97	97	97	97	97	97	88	88	95%
matrix											78.40%
tiers
5 codex entries Tooling Reasoning	100	93	93	93	93	93	93	93	87	87	93%
10 codex entries Tooling Reasoning	100	100	100	100	94	86	86	86	86	79	92%
20 codex entries Tooling Reasoning	96	94	89	88	85	85	81	78	77	70	84%
40 codex entries Tooling Reasoning	92	84	79	79	75	75	71	71	67	54	75%
tiers											85.87%
82.13%

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	0	90%
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	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	100	100	100%
90.83%

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	100	100	100	100	100	100	100	86	50	18	85%
Write 200 words with 50% dialogue Rule Following Utility	100	100	99	97	87	77	50	47	41	40	74%
Write 200 words with 90% dialogue Rule Following Utility	98	93	91	91	63	50	50	50	45	2	63%
dialogue-200											74.20%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	100	58	36	11	10	0	0	0	0	0	22%
Write 500 words with 50% dialogue Rule Following Utility	86	50	50	50	49	2	1	0	0	0	29%
Write 500 words with 70% dialogue Rule Following Utility	66	51	50	48	46	16	0	0	0	0	28%
dialogue-500											25.98%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	61	61	1	1	1	0	0	42%
49.00%

Language Comprehension

Does the model understand more than just English?

Scenario	#1	#2	#3	#4	#5	Total
Asking for directions (Dutch) Language	100	0	0	0	0	20%
Asking for directions (German) Language	100	100	0	0	0	40%
Friend got new kittens (German) Language	100	100	100	100	100	100%
Friend got new kittens (Tagalog) Language	100	100	100	100	100	100%
65.00%

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	89	98%
Character dialogue (Hindi) in a story Language	100	100	100	100	55	91%
Character dialogue (Italian) in a story Language	100	100	100	100	100	100%
Character dialogue (Spanish) in a story Language	100	100	100	100	50	90%
95.74%

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	95	100%
Write sentences with 10 words each Utility	100	100	100	100	100	100	100	100	96	96	99%
Write sentences with 20 words each Utility	100	100	100	100	100	100	100	84	84	84	95%
97.97%

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	50	50	50	50	50	50	0	0	0	40%
Count point of views for Jack Harper Utility	100	100	100	100	100	100	100	100	0	0	80%
Count point of views for Olivia Utility	100	100	100	0	0	0	0	0	0	0	30%
pov-count											50.00%
73.33%

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	89	78	78	92%
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	96	95	95	95	94	94	91	94%
Expand all contractions Text Editing	99	99	98	98	98	97	96	98%
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	95	95	95	94	92	81	93%
Passive voice → active voice Text Editing Hallucination	79	78	77	76	75	67	60	73%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	98	100%
Tense rewriting: past to present Text Editing	92	87	84	81	81	80	72	82%
Generic Prompt								92.54%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	89	78	95%
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	94	92	92	92	86	82	80	88%
Expand all contractions Text Editing	98	98	98	98	96	96	95	97%
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	93	93	91	90	87	78	26	80%
Passive voice → active voice Text Editing Hallucination	95	95	88	88	52	51	40	73%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	99	100%
Tense rewriting: past to present Text Editing	93	91	90	88	85	85	82	88%
Specific Prompt								91.20%
91.87%

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	0	0	0	0	0	0	0	0	0	10%
Simple Rule Following	100	0	0	0	0	0	0	0	0	0	10%
Simple (1-shot) 1-shot Rule Following	100	100	100	0	0	0	0	0	0	0	30%
Simple (5-shot) Few-shot Rule Following	100	100	0	0	0	0	0	0	0	0	20%
Unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	100	100%
34.00%

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	100	100	98	100%
20 sentence summary Utility	100	100	100	100	98	98	98	98	92	77	96%
50 sentence summary Utility	100	100	100	100	100	100	100	92	77	9	88%
sentences											96.78%
words
10 word summary Utility	100	100	100	100	100	100	100	100	100	100	100%
20 word summary Utility	100	100	100	100	100	100	100	100	100	100	100%
50 word summary Utility	100	100	100	100	100	100	100	100	100	100	100%
100 word summary Utility	100	100	100	100	100	100	100	100	100	92	99%
200 word summary Utility	100	100	100	100	100	100	100	100	100	100	100%
words											99.83%
98.70%