Inception Mercury 2

inception/mercury-2

Inception Mercury 2

via OpenRouter

Release Date

Mar 4th, 2026

Context Size

128k

Reasoning

Benchmark Cost

$1.47

Speed

665.0 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	71	71	66	63	62	67%
Horror: alone in an eerie place at night Creative Writing Hallucination	69	65	62	61	61	64%
Literary fiction: old friends reunite Creative Writing Hallucination	77	76	75	72	66	73%
Mystery: examining a crime scene Creative Writing Hallucination	75	74	70	70	68	71%
Romance: separated couple reunites Creative Writing Hallucination	76	76	73	72	72	74%
Thriller: chase through city streets Creative Writing Hallucination	72	68	66	64	63	66%
Detailed Writing Rules						69.14%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	65	63	63	61	56	62%
Horror: alone in an eerie place at night Creative Writing Hallucination	64	62	61	61	58	61%
Literary fiction: old friends reunite Creative Writing Hallucination	70	68	68	66	65	67%
Mystery: examining a crime scene Creative Writing Hallucination	68	68	67	66	65	67%
Romance: separated couple reunites Creative Writing Hallucination	65	62	62	61	58	62%
Thriller: chase through city streets Creative Writing Hallucination	65	64	63	63	62	63%
genre						63.66%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	67	66	65	65	65	65%
Horror: alone in an eerie place at night Creative Writing Hallucination	66	66	62	60	60	63%
Literary fiction: old friends reunite Creative Writing Hallucination	77	75	74	74	73	74%
Mystery: examining a crime scene Creative Writing Hallucination	80	80	74	71	71	75%
Romance: separated couple reunites Creative Writing Hallucination	76	76	76	72	70	74%
Thriller: chase through city streets Creative Writing Hallucination	71	70	70	69	68	69%
Novelcrafter Default Prompt						70.26%
67.69%

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	93	93	92	92	91	92%
Medium: The Hollow (Inferred) Tooling Reasoning	98	95	94	94	93	95%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	91	90	89	89	88	89%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	94	94	93	89	88	92%
92.02%

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	100	100%
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	100	100%
Short text (~524 words), small codex (11 entries) Hallucination	100	100	100	100	100	100	100	100	100	100	100%
basic entries											100.00%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	100	100	100	100	100	100	100	100	25	25	85%
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	25	25	85%
detailed entries											92.50%
96.25%

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	93	91	90	90	90	90	89	89	84	83	89%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	95	95	95	93	93	93	93	92	90	85	92%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	88	88	88	88	88	88	88	88	88	83	88%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	97	97	97	97	97	97	97	97	97	97	97%
matrix											91.35%
tiers
5 codex entries Tooling Reasoning	100	100	100	93	93	93	93	93	93	93	95%
10 codex entries Tooling Reasoning	100	100	100	100	100	100	100	100	92	92	98%
20 codex entries Tooling Reasoning	91	89	89	89	89	86	85	82	81	77	86%
40 codex entries Tooling Reasoning	100	97	97	97	97	95	92	91	88	88	94%
tiers											93.43%
92.39%

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	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%
91.67%

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	99	50	50	90%
Write 200 words with 50% dialogue Rule Following Utility	100	100	100	100	100	100	100	98	95	76	97%
Write 200 words with 90% dialogue Rule Following Utility	99	99	99	98	94	92	88	62	50	50	83%
dialogue-200											89.96%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	100	98	72	69	62	54	49	38	36	5	58%
Write 500 words with 50% dialogue Rule Following Utility	100	95	90	57	50	50	50	48	17	3	56%
Write 500 words with 70% dialogue Rule Following Utility	51	50	50	50	50	47	16	15	9	0	34%
dialogue-500											49.30%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	100	100	100	61	61	61	14	80%
71.05%

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	0	0	60%
Asking for directions (German) Language	100	100	100	0	0	60%
Friend got new kittens (German) Language	100	100	100	100	0	80%
Friend got new kittens (Tagalog) Language	100	100	100	100	100	100%
75.00%

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	100	100%
Character dialogue (Hindi) in a story Language	100	100	100	100	100	100%
Character dialogue (Italian) in a story Language	100	100	100	100	91	98%
Character dialogue (Spanish) in a story Language	100	100	100	100	100	100%
99.64%

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	96	100%
Write sentences with 20 words each Utility	100	100	100	100	100	100	100	100	100	100	100%
99.86%

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	0	0	0	0	60%
outline-count											86.67%
pov-count
Count point of views for Jack and Olivia Utility	100	50	50	50	50	50	50	50	50	50	55%
Count point of views for Jack Harper Utility	100	100	100	100	100	100	100	100	100	100	100%
Count point of views for Olivia Utility	100	100	100	100	100	100	100	100	100	100	100%
pov-count											85.00%
85.83%

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	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	97	96	96	95	95	95	84	94%
Expand all contractions Text Editing	100	100	100	99	99	99	83	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	99	99	99	99	95	95	95	97%
Passive voice → active voice Text Editing Hallucination	90	90	78	78	77	74	71	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	97	97	95	95	95	92	87	94%
Generic Prompt								95.85%
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	98	98	98	95	95	93	91	96%
Expand all contractions Text Editing	100	100	100	100	100	99	99	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	95	95	95	95	95	95	95	95%
Passive voice → active voice Text Editing Hallucination	98	97	52	52	52	42	37	61%
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	100	99	93	93	89	87	94%
Specific Prompt								94.02%
94.93%

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	0	0	0	0	0	0	0	0	0	10%
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%
26.00%

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	98	92	99%
20 sentence summary Utility	100	100	100	100	98	98	98	92	92	77	96%
50 sentence summary Utility	100	100	100	100	100	100	98	98	54	54	90%
sentences											97.02%
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											99.84%
98.79%