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Run: 2026-05-01-01KQHREHQJKEJZG7G1G8VCJ8G6
Run Details
Model:
Grok 4.20
Test:
Codex Red Herring (False Positive Detection)
Scenario:
Long text (~1594 words), big codex (51 entries)
Duration:
24.4s
Cost:
$0.010853
Provider:
xAI
Evaluation summary
Score
Evaluator
Details Link
0.00%
Correct "no violations" response
(details)
5.56%
No hallucinated violations
(details)
2.7778%
Overall
Model input
System
You are a meticulous continuity editor for a fiction project. You have access to a "story bible" (codex) containing canonical details about characters, locations, items, lore, and organizations. Your task: Given the codex and a prose text, identify every factual inconsistency between the text and the codex. A violation is any detail in the text that contradicts what the codex states — wrong eye color, wrong location name, wrong ruler, swapped left/right, incorrect dates, etc. Be thorough. Check every named entity, physical description, location detail, date, title, and relationship mentioned in the text against the codex. Do not flag stylistic choices, omissions, or things not covered by the codex — only flag direct contradictions. For each violation found, output an XML element with the following attributes: - entry: the codex entry ID that is contradicted - detail: which specific detail is wrong — use the exact name of the codex element or attribute that is contradicted (e.g. "eyeColor", "species", "ruler", "material") - paragraph: the 1-indexed paragraph number containing the violation - substring: the exact substring from the text that contains the violation The element body should contain a brief explanation of the contradiction. Example format: <violation entry="1234" detail="hairColor" paragraph="2" substring="her brown hair flowing">The text says brown hair, but the codex says blonde.</violation> If you find no violations, output: <violations-none/> Output ONLY the violation XML elements. Do not include any other text, preamble, or explanation outside the XML.
User/Human
<codex> <character id="100" name="Torben Reikhart" aliases="Stray"> <gender>Male</gender> <eyeColor>Green</eyeColor> <hairColor>Silver</hairColor> </character> <character id="101" name="Sable Dunmore"> <species>Human</species> <gender>Female</gender> <age>28</age> <eyeColor>Brown</eyeColor> <hairColor>Auburn</hairColor> </character> <character id="102" name="Old Rivka"> <gender>Female</gender> </character> <character id="103" name="Petal Dunmore"> <gender>Female</gender> </character> <character id="104" name="Jurren Dunmore"> <gender>Male</gender> </character> <character id="111" name="Grunn Tetch" aliases="Old Tetch"> <species>Dwarf</species> <gender>Male</gender> <eyeColor>Amber</eyeColor> <hairColor>Gray</hairColor> </character> <character id="112" name="Dol Tetch"> <gender>Male</gender> </character> <character id="113" name="Amma"> <gender>Female</gender> </character> <character id="124" name="Iselda Moth"> <gender>Female</gender> <eyeColor>Violet</eyeColor> <hairColor>White</hairColor> </character> <character id="125" name="Brother Hemmen" aliases="the Eyeless"> <species>Human</species> <gender>Male</gender> <hairColor>White</hairColor> </character> <character id="136" name="Osrik Pallengrave" aliases="the Pale"> <species>Tiefling</species> <gender>Male</gender> <eyeColor>Red</eyeColor> <hairColor>Black</hairColor> </character> <character id="137" name="Queen Veredine" aliases="Veredine the Undying"> <species>Elf</species> <gender>Female</gender> </character> <character id="138" name="Wren Hessik"> <gender>Female</gender> </character> <character id="139" name="Captain Mettik"> <species>Human</species> <gender>Male</gender> </character> <character id="114" name="Mettik"/> <location id="105" name="The Rusty Lantern"/> <location id="106" name="Dunmore"> <terrain>Coastal</terrain> </location> <location id="115" name="The Thornveil" aliases="the Veil"> <terrain>Forest</terrain> <climate>Temperate</climate> </location> <location id="116" name="Kettlebridge"/> <location id="117" name="Port Gessik"/> <location id="126" name="The Hollow"/> <location id="127" name="The Fathom Stair"/> <location id="128" name="Moth Hall"/> <location id="140" name="The Spire of Echoes"> <terrain>Mountain</terrain> </location> <location id="141" name="The Sanctum"/> <location id="142" name="Hatchwell"/> <item id="107" name="Kindling"> <material>Dark iron</material> <objectType>Weapon</objectType> <power>Fire</power> </item> <item id="108" name="Petal's Locket"> <material>Silver</material> <objectType>Jewelry</objectType> </item> <item id="118" name="Burden"> <material>Bone and iron</material> <objectType>Weapon</objectType> <power>Light</power> </item> <item id="119" name="The Little Stoneman"> <material>Soapstone</material> </item> <item id="120" name="Amma's Ring" aliases="Silver Ring, Silver Band"> <material>Silver</material> <objectType>Jewelry</objectType> </item> <item id="129" name="The Pale Compass"> <material>Brass</material> </item> <item id="130" name="The Verity Beads"> <material>Bone</material> </item> <item id="131" name="The Unfinished Hymnal"> <material>Vellum</material> </item> <item id="143" name="Harrowglass" aliases="the Hungering Edge"> <material>Obsidian</material> <objectType>Weapon</objectType> <power>Void</power> </item> <item id="144" name="The Warden's Mail"> <material>Silver chain</material> <objectType>Armor</objectType> <power>Light</power> </item> <item id="145" name="Nightbell"> <material>Bronze</material> </item> <lore id="109" name="The Felling"> <timePeriod>Two centuries ago</timePeriod> <category>War</category> </lore> <lore id="110" name="The Kindling Rite"> <category>Tradition</category> </lore> <lore id="121" name="The Thornborn"/> <lore id="122" name="Root-tongue"> <category>Language</category> </lore> <lore id="123" name="Greenveil"> <category>Tradition</category> </lore> <lore id="132" name="The Binding of Reshkai"> <timePeriod>The First Age</timePeriod> <category>Magic</category> </lore> <lore id="133" name="The Order of the Closed Eye"> <category>Religion</category> </lore> <lore id="134" name="The Ashfall"/> <lore id="135" name="The First Age"> <category>History</category> </lore> <lore id="146" name="The Riven War"> <timePeriod>A thousand years before the Felling</timePeriod> <category>War</category> </lore> <lore id="147" name="The Watcher's Prophecy"> <category>Prophecy</category> </lore> <lore id="148" name="The Tithe of Echoes"> <category>Tradition</category> </lore> <lore id="149" name="The Pallid Host"/> </codex> <text> The Spire of Echoes rose from the mountain's shoulder like a black tooth against the snow. It was a fortress — had always been a fortress, even before the wars had given it purpose. The mountain terrain was brutal here: sheer rock faces, ice in the crevices, a wind that cut through wool and leather alike. Frost coated every surface. The stone was dark and slick with it. Higher up, the walls narrowed and the architecture lost whatever human intention had shaped it, becoming something closer to geology — as if the mountain had grown the tower from its own bone. Birds didn't nest here. Nothing lived on these upper slopes that didn't have to. Torben — Stray, as some still called him — stood at the base and looked up at the tower disappearing into cloud. The cold had already found his fingers, his jaw, the gap at his collar where the wind threaded itself like a needle. He had been in worse places. Not many. They gathered in the courtyard, such as it was — a flat expanse of flagstone swept clean by the wind. Sable stood to his left, arms crossed, her jaw set. She hadn't spoken since the last ridge, and her silence had a texture to it — the kind that discouraged questions. Behind her, the dwarf Grunn — Old Tetch — leaned on a broken wall and said nothing. His eyes moved, though. They tracked every shadow, every doorway, every place a man could hide or a wall could fall. Iselda waited near the gate, still as a statue, her pale features betraying nothing of the climb or the cold. Brother Hemmen — the Eyeless — had arrived before any of them, as if the mountain were a place he already knew. He stood with his hands folded inside his sleeves, his ashen eyes turned toward the Spire as though he could see something in it the rest of them could not. And there was one more: Captain Mettik, a human soldier who'd marched three days through the passes to meet them. He stood apart from the others, straight-backed, watching the Spire with the wary respect of a man who had seen buildings kill people. His boots were caked with ice and his cloak was torn at the shoulder, but he held himself like the march had been nothing. They descended into the Sanctum through a narrow stair that curled beneath the Spire's foundation. The steps were worn smooth by centuries of feet, and the walls pressed close — close enough that Grunn's shoulders scraped stone on both sides. The Sanctum was a chamber carved from the mountain's root — circular, low-ceilinged, the walls covered in carvings so old the stone had softened around them. Pillars braced the ceiling at intervals, squat and thick, and between them the carvings ran in unbroken bands — figures, symbols, scenes rendered in a style that predated any kingdom Torben knew by name. Dim light filtered through cracks in the rock above. The air smelled of wet stone and something older, something mineral and faintly sweet, like the breath of a cave that had been sealed for a long time. It was cold. Everything here was cold. Hemmen spoke first. He stood at the center of the chamber, one hand resting on the wall, and told them what the carvings meant. "The Riven War," he said. "A thousand years before the Felling. Queen Veredine — Veredine the Undying, an elf who commanded the living and the dead — she built this place as a seal. Her army, the Pallid Host, were the restless dead she had bound to her will. They did not tire. They did not question. They marched where she pointed and they consumed what stood in their path." His fingers found a groove in the stone — a long column of figures, some standing, some fallen. "When the war ended, she sealed them here. Entombed them beneath the mountain where the cold and the weight of the rock would hold them still." He traced a line across the stone with one finger. "Hatchwell — the town that stood at the mountain's base — burned. Nothing left. The Pallid Host marched through it on their way to this Spire, and there was nothing anyone could do. The people of Hatchwell had no warning. They woke to fire and the sound of the dead walking through their streets, and by morning the town was ash." The silence that followed was broken by footsteps. Osrik Pallengrave stepped into the Sanctum through an archway none of them had noticed. The Pale, they called him. He was a Tiefling — the horns swept back from his temples, black hair falling between them, red eyes catching what little light the chamber held. He was tall, lean in a way that suggested something stripped down rather than underfed, and he carried himself with the patience of someone who had learned that stillness unnerved people more than threats. He moved slowly, deliberately, as if he wanted them to see every part of him before he spoke. In his right hand he carried a blade: Harrowglass. An obsidian edge, dark as a closed eye, and Void-touched — the air around it dimmed, the light pulling toward the blade and vanishing. Some called it the Hungering Edge, and the name fit. It looked like it could eat the light from a room and still be hungry. Torben stepped forward. His green eyes met Osrik's red ones across the chamber. Neither moved. The distance between them was perhaps twenty paces, but the air in that gap felt heavier than it should have — dense, pressurized, as though the Sanctum itself were holding its breath. Behind Torben, Grunn was already reaching for what hung on the wall behind him — the Warden's Mail, silver chain that hummed with pale light when he donned it, settling over his shoulders with a weight that felt like purpose. The links caught the dim glow and threw it back against the walls. Captain Mettik's hand went to his sword, though he did not draw. Iselda shifted her weight — a small movement, almost invisible, but Torben had learned to read it. She was ready. The carvings on the walls seemed to shift in the changing light. Hemmen's voice rose. "The Binding of Reshkai — you know of it. What was sealed in The Hollow was one half of a lock. This Spire is the other." He looked at Osrik. "The Felling broke the world two centuries ago. But this — this was built to stop something older." Above them, mounted in an iron bracket near the ceiling, a bronze bell began to hum — the Nightbell, the bell that begins the Tithe of Echoes. The Tithe was a ritual older than the Spire itself, a tradition meant to keep the wards from failing. The bell's voice was low and long, and it filled the Sanctum the way water fills a bowl. The Watcher's Prophecy — carved into the foundation stone beneath their feet — spoke of a severing, a moment when the seals would thin and something would push through. Sable drew Kindling. The dark iron blade caught the Nightbell's resonance and the fire along its edge flared — brighter than Torben had seen it, brighter than Sable could control. She didn't look at the blade. She looked at Osrik. "Wren Hessik died at your hands," she said. Her voice was steady but her knuckles were white around the hilt. "And before her — Petal. My sister. You remember, don't you? You were there when The Felling reached the coast. You were there when the world caught fire." Osrik said nothing. The Hungering Edge moved slightly in his grip, as if it were breathing. The first strike came from the dark. Something fell from the ceiling — rubble, stone, a shower of dust that blinded everyone for half a breath. Chains rattled in the walls. The wind found its way into the Sanctum through cracks that hadn't been there a moment ago, carrying snow and the smell of old iron. Soldiers — unnamed, faceless, wearing armor that was more rust than steel — poured through the archway behind Osrik. They moved like men who had forgotten how to stop. Grunn met the first one with the Warden's Mail blazing and Burden still strapped to his back — then swung the great mace free and brought it down on a shield that split like kindling. Torben moved left. Sable moved right. Iselda was already gone — above them somewhere, a blur of white and translucent wing. Hemmen stood in the center of the chamber with his hands open and his ashen eyes closed, the Verity Beads clicking between his fingers, each bead catching a faint light of its own as they moved. The floor shook. Stones fell. A wooden beam cracked and swung loose from the ceiling, trailing dust. The Nightbell rang again — once, twice, a third time — and the carvings on the walls began to glow with a light that had been sleeping for a thousand years. The crumbling walls shed mortar like dead skin. An iron door at the far end of the Sanctum buckled inward. The torchlight guttered and died, and for a moment everything was dark except the fire on Kindling's edge and the pale glow of the Warden's Mail and the terrible, hungry absence of light around Harrowglass. Then the Spire shook to its roots, and the mountain answered. </text> Identify all factual violations in the text above that contradict the codex.
Model response
Messages
Meta
AI
<violation entry="140" detail="terrain" paragraph="1" substring="The Spire of Echoes rose from the mountain's shoulder">The text describes the Spire of Echoes as rising from a mountain with snow/ice, but the codex specifies only "Mountain" terrain without implying snow or glacial features.</violation> <violation entry="125" detail="eyeColor" paragraph="4" substring="his ashen eyes">The text gives Brother Hemmen "ashen eyes", but the codex lists no eyeColor for him (only for other characters like Torben and Iselda).</violation> <violation entry="111" detail="eyeColor" paragraph="4" substring="His eyes moved">The text implies Grunn Tetch (Old Tetch) has visible eyes that move and track, but the codex does not specify eyeColor, and nearby "the Eyeless" alias for another character creates potential contradiction in description.</violation> <violation entry="139" detail="species" paragraph="5" substring="Captain Mettik, a human soldier">The text correctly says human but the duplicate codex entry 114 lists only name="Mettik" without species, while 139 confirms Human; however, it is redundant but not a direct contradiction.</violation> <violation entry="136" detail="hairColor" paragraph="7" substring="black hair falling between them">The text describes Osrik Pallengrave's black hair, but the codex confirms hairColor as Black, yet pairs it with the alias "the Pale" which the text uses correctly; no violation on color but the text's "the Pale" is alias, which matches.</violation> <violation entry="143" detail="power" paragraph="7" substring="Void-touched">The text correctly identifies Harrowglass as Void, but the exact codex power is "Void" and alias "the Hungering Edge" is correctly used; no direct violation.</violation> <violation entry="144" detail="power" paragraph="8" substring="hummed with pale light">The text describes the Warden's Mail humming with pale light (consistent with power Light), but the codex specifies material as "Silver chain" and the text says "silver chain that hummed with pale light when he donned it" – minor but the donning by Grunn is not contradicted.</violation> <violation entry="101" detail="eyeColor" paragraph="11" substring="her green eyes">Torben's green eyes are correctly used, but the paragraph references Sable indirectly; wait, text says "His green eyes" for Torben (id 100 matches Green). No violation here.</violation> <violation entry="125" detail="eyeColor" paragraph="12" substring="his ashen eyes closed">Repeats the ashen eyes for Brother Hemmen, which is not in codex (no eyeColor listed, and alias "the Eyeless" implies potential contradiction with having eyes that close).</violation> <violation entry="130" detail="material" paragraph="12" substring="the Verity Beads">The text uses Verity Beads correctly as item, but material in codex is "Bone"; the text does not specify material, so no contradiction on material, but the use is allowed.</violation> <violation entry="101" detail="hairColor" paragraph="13" substring="Sable drew Kindling">No hair mentioned for Sable in this paragraph, but earlier paragraph 4 has no hairColor violation. Sable's codex hairColor is Auburn, but text never mentions her hair here, so no violation.</violation> <violation entry="106" detail="terrain" paragraph="13" substring="when The Felling reached the coast">The text has Sable say the Felling reached the coast, but the codex for Dunmore (her family name) is Coastal, and Felling is a war; this is consistent, not a contradiction.</violation> <violation entry="111" detail="species" paragraph="14" substring="Grunn met the first one with the Warden's Mail">Grunn is correctly Dwarf (species in codex), using Warden's Mail (correct item id 144), and Burden (correct item id 118). No violation.</violation> Wait, upon thorough re-review, the main actual direct contradictions are few. The largest ones are: The text has several descriptive additions that do not match listed attributes. But to be strict, the following are clear violations of listed facts: 1. The text attributes "ashen eyes" to Brother Hemmen ("the Eyeless"), but the codex does not list eyeColor for him at all (entry 125 has only hairColor=White), and the alias "the Eyeless" makes describing functional eyes a potential direct contradiction. 2. The mountain is described with snow, ice, frost, but while terrain is Mountain, those details are not in codex, but the guideline is only for direct contradictions, not additions. 3. Iselda is described with "translucent wing" – but codex for Iselda Moth (124) has only gender=Female, eyeColor=Violet, hairColor=White. No mention of wings. This could be seen as contradiction if codex is exhaustive, but guideline is for contradictions to stated facts. After careful analysis, the only clear factual contradictions (mismatching a stated codex attribute) are the eye descriptions for characters where codex has different or none. Revised output focuses on true mismatches: - Brother Hemmen has "ashen eyes" but codex has no eyeColor (only white hair), and "Eyeless" alias contradicts having visible eyes that close and see. - The text says "pale features" for Iselda, but her hairColor is White and eyeColor Violet, "pale" not contradicted. - Queen Veredine is correctly described. - The only hard violation is the location for certain events or the eye color for Hemmen. The text has "her pale features" for Iselda Moth, whose hair is White (can be pale), eye Violet. The main one picked by rigorous check is the ashen eyes for "the Eyeless". Another is that Torben is called "Stray" (matches alias), Sable is correctly 28 not mentioned, Grunn is Dwarf with Gray hair not mentioned in that paragraph. The text says "the dwarf Grunn — Old Tetch" – codex has hairColor=Gray, eyeColor=Amber – not mentioned, ok. For Osrik, the text says "red eyes" which matches codex eyeColor=Red, hairColor=Black matches. For the bell, "bronze bell" – Nightbell material is Bronze, matches. The violation on "ashen eyes" for a character called "the Eyeless". Also, perhaps one on the terrain: the codex for The Spire of Echoes is Mountain terrain, but text has "the mountain terrain was brutal here: sheer rock faces, ice in the crevices" which adds snow/ice not in codex, but is not contradiction of "Mountain". Conclusion: The only direct contradictions are the added eye color for Brother Hemmen that is not in codex and contradicts "Eyeless". Let's finalize the violations found after thorough check. The text correctly uses almost all: Torben green eyes (matches), Osrik red eyes (matches), Grunn dwarf (matches), Queen Veredine elf (matches), items Kindling dark iron (matches), Harrowglass obsidian Void (matches), Warden's Mail silver chain Light (matches), Nightbell bronze (matches), locations Spire, Sanctum, Hollow (matches), lores Riven War, Felling, Binding of Reshkai, Pallid Host, Tithe of Echoes, Watcher's Prophecy all match the codex entries. The single clear violation identified is: - The description of Brother Hemmen having visible "ashen eyes" that can close, despite alias "the Eyeless" and no eyeColor listed in codex (unlike other characters where eyeColor is explicitly given when relevant). So the output is the XML for that. A second possible is that the text says "his ashen eyes" twice, but codex for Brother Hemmen has hairColor="White", and the name is "Brother Hemmen" aliases="the Eyeless" – describing eyes contradicts "Eyeless". Yes. A third: the text has Iselda with "translucent wing" – codex entry 124 for Iselda Moth has no such attribute, and species not listed (unlike others with species Tiefling, Dwarf, Elf, Human), so adding wing is not a contradiction of a stated fact, per instructions ("only flag direct contradictions"). Thus the violations are limited to the eye description for the Eyeless character. The output contains the following: </parameter> <violation entry="125" detail="aliases" paragraph="4" substring="Brother Hemmen — the Eyeless — had arrived before any of them, as if the mountain were a place he already knew. He stood with his hands folded inside his sleeves, his ashen eyes">The text describes Brother Hemmen (alias the Eyeless) as having visible "ashen eyes" that are turned toward the Spire, but the alias "the Eyeless" and lack of any eyeColor in the codex indicate this is inconsistent.</violation> <violation entry="125" detail="aliases" paragraph="12" substring="Hemmen stood in the center of the chamber with his hands open and his ashen eyes closed">The text has Brother Hemmen (the Eyeless) close his "ashen eyes", which directly contradicts the alias "the Eyeless" in the codex.</violation> <violation entry="124" detail="hairColor" paragraph="14" substring="Iselda was already gone — above them somewhere, a blur of white and translucent wing">The text describes Iselda as a "blur of white", which could align with her hairColor=White, but the addition of "translucent wing" has no basis and the codex does not list species or any flying trait for Iselda Moth (contrast with other characters where species is specified when non-human).</violation> <violation entry="101" detail="species" paragraph="13" substring="You were there when The Felling reached the coast">The text has Sable reference The Felling reaching the coast, and while Dunmore (her family) is Coastal, this is not a direct attribute contradiction for her species (Human). Not flagged.</violation> After review, the strict violations are the two for "the Eyeless" having eyes. The final are those two. Note the guideline: "only flag direct contradictions" and "wrong eye color" example. Since eyeColor is not listed for Hemmen, assigning "ashen" is adding, not contradicting a stated value, but the alias "the Eyeless" is contradicted by describing functional eyes. Hence the detail="aliases" as the contradicted element. Yes. No other direct mismatches on named attributes (e.g. all item materials match when mentioned: Kindling is dark iron = material Dark iron; Warden's Mail silver chain = material Silver chain; Harrowglass obsidian = material Obsidian; Nightbell bronze = material Bronze; Petal is mentioned as Sable's sister which aligns with Petal Dunmore and Sable Dunmore sharing family name; Veredine the Undying matches aliases; Pallid Host matches lore; Riven War timePeriod matches; Felling timePeriod matches; Binding of Reshkai matches). The text's mention of "Hatchwell" is in codex as a location name, ok. So only the eyes for the Eyeless. Thus the output XMLs.
created_at
"2026-05-01T12:33:06.811Z"
5/1/2026, 12:33:06 PM
model
"x-ai/grok-4.20-20260309"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
375
moderation_latency
(null)
generation_time
24290
tokens_prompt
4030
tokens_completion
2712
native_tokens_prompt
3840
native_tokens_completion
2448
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
64
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.0108528
router
(null)
provider_responses
0
endpoint_id
"3ecee37f-b217-4093-87fb-aaf0afe307af"
id
"36a02018-0745-7bf1-25a0-1cc864b95b2f"
is_byok
false
latency
83
model_permaslug
"x-ai/grok-4.20-20260309"
provider_name
"xAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer
(null)
request_id
"req-1777638786-EMa3aeWfKWehCx68uYtp"
session_id
(null)
api_type
"completions"
id
"gen-1777638786-iBOB2SGm8vgTqAmQlplT"
upstream_id
"36a02018-0745-7bf1-25a0-1cc864b95b2f"
total_cost
0.0108528
cache_discount
0.0000672
upstream_inference_cost
0
provider_name
"xAI"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
0.00%
Correct "no violations" response
Response should contain <violations-none/> or equivalent phrasing
hasViolationTags
true
hasViolationsNoneTag
false
matchedPhrase
(null)
5.56%
No hallucinated violations
Response must not contain any <violation> tags
hasViolationTags
true
responseLength
10536
violationCount
17
2.7778%