Writer: Palmyra X5

writer/palmyra-x5

Writer: Palmyra X5

via OpenRouter

Release Date

Jan 26th, 2026

Context Size

Reasoning

Benchmark Cost

$4.33

Speed

50.9 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	90	87	83	80	79	84%
Horror: alone in an eerie place at night Creative Writing Hallucination	90	87	86	81	81	85%
Literary fiction: old friends reunite Creative Writing Hallucination	93	90	89	89	88	90%
Mystery: examining a crime scene Creative Writing Hallucination	92	90	88	88	87	89%
Romance: separated couple reunites Creative Writing Hallucination	94	91	90	89	86	90%
Thriller: chase through city streets Creative Writing Hallucination	93	91	91	89	87	90%
Detailed Writing Rules						88.03%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	80	79	76	73	68	75%
Horror: alone in an eerie place at night Creative Writing Hallucination	90	80	80	80	78	81%
Literary fiction: old friends reunite Creative Writing Hallucination	89	85	84	79	79	83%
Mystery: examining a crime scene Creative Writing Hallucination	83	83	80	80	79	81%
Romance: separated couple reunites Creative Writing Hallucination	84	84	82	76	74	80%
Thriller: chase through city streets Creative Writing Hallucination	90	87	86	86	81	86%
genre						81.19%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	84	80	79	75	73	78%
Horror: alone in an eerie place at night Creative Writing Hallucination	86	85	85	83	82	84%
Literary fiction: old friends reunite Creative Writing Hallucination	87	85	85	84	83	85%
Mystery: examining a crime scene Creative Writing Hallucination	90	88	83	82	72	83%
Romance: separated couple reunites Creative Writing Hallucination	89	83	82	81	79	83%
Thriller: chase through city streets Creative Writing Hallucination	90	89	87	87	85	88%
Novelcrafter Default Prompt						83.44%
84.22%

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	92	91	91	91	89	91%
Medium: The Hollow (Inferred) Tooling Reasoning	92	92	91	90	88	91%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	94	93	92	91	89	92%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	91	91	90	90	89	90%
90.89%

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	42	30	29	27	27	27	27	26	2	2	24%
Long text (~1594 words), small codex (11 entries) Hallucination	42	35	32	32	31	30	30	30	29	2	29%
Short text (~524 words), big codex (51 entries) Hallucination	100	100	50	29	25	25	17	17	17	13	39%
Short text (~524 words), small codex (11 entries) Hallucination	29	28	25	25	25	25	25	17	17	13	23%
basic entries											28.75%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	42	28	27	27	26	26	17	13	6	5	22%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	28	27	5	5	5	4	4	3	2	2	8%
Short text (~524 words), big codex (51 detailed entries) Hallucination	35	28	27	25	25	25	17	17	17	17	23%
Short text (~524 words), small codex (11 detailed entries) Hallucination	25	25	25	25	17	17	17	10	10	10	18%
detailed entries											17.79%
23.27%

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	78	77	77	76	72	71	71	69	51	72%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	96	93	91	91	89	89	88	85	83	82	89%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	90	90	87	87	87	80	80	80	76	76	83%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	92	92	92	92	88	88	84	84	84	83	88%
matrix											83.04%
tiers
5 codex entries Tooling Reasoning	83	83	83	83	83	83	76	76	76	44	77%
10 codex entries Tooling Reasoning	100	100	100	100	100	100	86	86	86	86	94%
20 codex entries Tooling Reasoning	94	92	89	88	86	86	86	86	82	77	87%
40 codex entries Tooling Reasoning	90	88	88	84	79	79	79	76	75	67	81%
tiers											84.67%
83.86%

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	50	50	50	50	50	50	50	50	50	50	50%
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%
87.50%

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	66	50	49	47	36	14	1	0	0	0	26%
Write 200 words with 50% dialogue Rule Following Utility	50	49	45	29	5	2	0	0	0	0	18%
Write 200 words with 90% dialogue Rule Following Utility	100	84	55	52	51	50	50	50	49	0	54%
dialogue-200											32.72%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	0	0	0	0	0	0	0	0	0	0	0%
Write 500 words with 50% dialogue Rule Following Utility	43	26	0	0	0	0	0	0	0	0	7%
Write 500 words with 70% dialogue Rule Following Utility	49	34	2	0	0	0	0	0	0	0	8%
dialogue-500											5.12%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	100	100%
30.50%

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	0	0	0	0	20%
Friend got new kittens (German) Language	100	100	100	100	100	100%
Friend got new kittens (Tagalog) Language	100	100	100	100	0	80%
70.00%

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	86	0	77%
Character dialogue (German) in a story Language	100	0	0	0	0	20%
Character dialogue (Hindi) in a story Language	0	0	0	0	0	0%
Character dialogue (Italian) in a story Language	100	100	100	0	0	60%
Character dialogue (Spanish) in a story Language	100	100	93	0	0	59%
43.16%

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	98	96	90	83	82	78	76	73	11	79%
Write sentences with 10 words each Utility	89	87	87	78	76	75	73	73	54	48	74%
Write sentences with 20 words each Utility	71	58	51	44	38	37	22	14	8	0	34%
62.24%

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	0	0	0	0	0	0	0	0	0	10%
outline-count											70.00%
pov-count
Count point of views for Jack and Olivia Utility	100	100	100	100	100	100	100	100	100	100	100%
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	100	0	0	0	0	0	0	40%
pov-count											73.33%
71.67%

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	97	97	97	97	97	97	98%
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	86	84	84	82	82	82	81	83%
Expand all contractions Text Editing	100	100	100	100	100	100	100	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	91	91	91	91	91	91	74	88%
Passive voice → active voice Text Editing Hallucination	90	90	87	86	86	73	72	83%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	90	88	85	81	77	77	73	81%
Tense rewriting: past to present Text Editing	100	100	99	99	99	99	99	100%
Generic Prompt								92.61%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	89	89	89	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	99	99	99	99	99	99	99	99%
Expand all contractions Text Editing	100	100	100	100	100	100	100	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	100	100	100	100	100	100	100	100%
Passive voice → active voice Text Editing Hallucination	97	95	95	95	94	94	93	95%
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	100	100	100	100	100	100	100	100%
Specific Prompt								98.76%
95.69%

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	100	100%
100.00%

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	100	100	100	100	100	100	100	100	100	100	100%
Simple (1-shot) 1-shot Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Simple (5-shot) Few-shot Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	100	0	90%
78.00%

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	100	100	100	100	0	0	80%
50 sentence summary Utility	100	98	0	0	0	0	0	0	0	0	20%
sentences											79.93%
words
10 word summary Utility	100	100	100	100	100	100	98	98	92	77	97%
20 word summary Utility	92	92	77	54	27	9	0	0	0	0	35%
50 word summary Utility	0	0	0	0	0	0	0	0	0	0	0%
100 word summary Utility	27	27	9	2	0	0	0	0	0	0	7%
200 word summary Utility	77	27	27	0	0	0	0	0	0	0	13%
words											30.31%
65.48%