Run: 2026-05-31-01KSYXJFW4R7V6ZZDESPBK5RGW

Run Details

Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Language Writing
Scenario:
Character dialogue (French) in a story
Duration:
16.9s
Cost:
$0.028120
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
100.00% Parse dialogue (details)

Model input

System
You are an expert novel author in the cozy mystery genre. Take the following details about characters/locations/... into account: <character name="Marie"> Marie is a 30-year old college student on a study abroad program. Born in France, she is fluent in French and does not yet know any English. She enjoys landscape photography and is always seen with her camera. </character> <character name="Hunter"> Hunter is a 35-year old detective who is investigating a series of mysterious disappearances in the small town of Alborn, MN. He is a former marine and has a no-nonsense attitude. Hunter has no knowledge of French, not even basic phrases. </character> <location name="Alborn, MN"> Alborne is a small town in the Midwest with a population of 3,000. It is known for its annual apple festival. </location>
User/Human
Write the following scene: Marie is sitting at a cafe, looking at her camera. Hunter approaches her and asks her about a recent event in the town. She responds troubled and shaken in French, and Hunter looks confused. They talk for a while, until Hunter gets a call and has to leave. Return the dialogue between Marie and Hunter as a voice sheet: Marie: "..." Hunter: "..."

Model response

AI
Marie: *(murmuring to herself, scrolling through photos)* "Non, non... ce n'est pas possible. J'ai vu quelque chose..." Hunter: "Excuse me, miss? Sorry to bother you. I'm Detective Hunter, Alborn PD. You were near the orchard last night, weren't you? I just have a few questions." Marie: *(looking up, startled)* "Oh — pardon? Je... je ne comprends pas. Vous êtes... la police?" Hunter: "Yeah. Police. Look, were you out by the festival grounds? Did you see anything unusual?" Marie: *(voice trembling, clutching her camera)* "L'orchard — oui, oui, j'étais là. J'ai pris des photos, et puis... il y avait un homme. Il est... il a disparu. Disparu! Devant mes yeux!" Hunter: *(rubbing his temple)* "Okay, you're talking real fast there. Disparu... that means... gone? Disappeared?" Marie: *(nodding urgently)* "Oui! Disparu! J'ai tout vu. C'était horrible. Regardez — regardez la photo!" *(turning the camera toward him with shaking hands)* Hunter: *(leaning in, squinting at the screen)* "Wait. Hold on. That's — is that a person? Right there at the tree line? Miss, this is — this could be important. Can you slow down for me?" Marie: *(eyes welling up)* "Je ne sais pas comment vous expliquer. Je ne parle pas anglais. S'il vous plaît... je suis effrayée. Quelqu'un me suivait." Hunter: "Hey, hey — easy. I can tell you're scared. I just don't — God, I wish I had a translator. Effrayée. Okay. Scared. I got that much." Marie: "Oui. Effrayée." *(wiping her eyes)* "Merci. Merci de... d'écouter." Hunter: *(his phone buzzes; he glances at it, jaw tightening)* "Hang on." *(answering)* "Hunter. — What? Where? — No, don't touch anything, I'm on my way." *(hanging up, standing abruptly)* "I'm sorry, I have to go. Stay here, okay? Don't move. Don't go anywhere. I'll bring someone who speaks French. You — you stay. Got it?" Marie: *(confused, half-rising)* "Vous partez? Mais — attendez! La photo! Vous ne l'avez pas vue!" Hunter: *(already backing toward the door, pointing at her)* "Stay. Here. Please. I'll be back." *(under his breath)* "Whatever the hell she just saw, it's connected. I know it." Marie: *(sinking back into her chair, alone, staring at the photo)* "...il était là. Je le jure. Il était là."
created_at"2026-05-31T11:44:10.129Z" 5/31/2026, 11:44:10 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2522
moderation_latency(null)
generation_time16868
tokens_prompt316
tokens_completion644
native_tokens_prompt409
native_tokens_completion1043
native_tokens_completion_images(null)
native_tokens_reasoning48
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.02812
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01VSHw2FbsgBnyUc2Ub7iJf8"
is_byokfalse
latency925
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780227850-PMQJnXuIAhgE9egUSQsU"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227850-ZMdm4gmMyGUWlSkuimes"
upstream_id"msg_01VSHw2FbsgBnyUc2Ub7iJf8"
total_cost0.02812
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Parse dialogue n/a
dialogue
0
name"Marie"
dialogue"Non, non... ce n'est pas possible. J'ai vu quelque chose..."
detectedLang"fr"
heavyLang"fr"
scores
fr0.828009828009828
en0.647887323943662
it0.574726609963548
ca0.5263870094722598
ro0.28716904276985744
sq0.26160337552742613
pt0.2456896551724138
es0.2290748898678414
lt0.20634920634920634
nl0.20634920634920634
eu0.19908466819221968
ms0.1935483870967742
de0.1822429906542056
tl0.1784037558685446
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss? Sorry to bother you. I'm Detective Hunter, Alborn PD. You were near the orchard last night, weren't you? I just have a few questions."
detectedLang"en"
heavyLang"en"
scores
en0.7742801366520253
tl0.6183993399339934
fr0.5311708058793715
it0.5187304890738813
da0.48121144139091415
no0.4690011481056257
nl0.45715962441314556
pt0.44277108433734935
ca0.44176222088111045
ro0.4089456869009585
sq0.38701126573889993
yo0.3616287094547964
cs0.358974358974359
sv0.358974358974359
es0.34536447275300775
hr0.3193524650478293
sl0.3148148148148148
et0.30188679245283023
de0.2955064737242955
pl0.28350116189000774
sk0.2652899126290707
ms0.23490488006617036
lv0.21610169491525424
lt0.2120954003407155
hu0.19425087108013936
tr0.18213969938107868
fi0.12982126058325494
is0.12982126058325494
az0.12570888468809074
vi0.12570888468809074
be0.07035175879396985
eu0.07035175879396985
uk0.06376518218623482
reliabletrue
passestrue
2
name"Marie"
dialogue"Oh — pardon? Je... je ne comprends pas. Vous êtes... la police?"
detectedLang"fr"
heavyLang"fr"
scores
fr0.7865680136596471
it0.621975806451613
ca0.6189024390243903
ro0.5941558441558442
tl0.5824053452115813
nl0.5805369127516778
cs0.5767494356659142
lt0.5738636363636364
sl0.5525059665871122
es0.5481927710843374
hr0.5465538089480049
sq0.5148771021992239
en0.5104438642297651
sk0.4460856720827179
yo0.40476190476190477
de0.3872549019607844
lv0.33862433862433866
pt0.33862433862433866
pl0.3231046931407942
no0.31569343065693434
fi0.31444241316270566
ms0.30683918669131244
tr0.30683918669131244
hu0.2951127819548872
eu0.20042643923240938
da0.1935483870967742
et0.19181034482758622
sv0.19181034482758622
vi0.1830065359477124
az0.16666666666666666
reliabletrue
passestrue
3
name"Hunter"
dialogue"Yeah. Police. Look, were you out by the festival grounds? Did you see anything unusual?"
detectedLang"en"
heavyLang"en"
scores
en0.8036649214659686
tl0.630801687763713
cs0.5240253853127833
fr0.5014245014245015
ms0.48478900883218845
et0.4807121661721069
da0.45652173913043476
sk0.43910256410256415
sq0.42622950819672134
no0.4140625
hr0.41275167785234906
it0.4094488188976378
sv0.40878378378378377
nl0.40340909090909094
sl0.3993135011441648
pt0.3986254295532647
es0.38953488372093026
ro0.358974358974359
ca0.3462017434620174
pl0.33879093198992444
lt0.2886178861788618
az0.26880222841225626
lv0.22451994091580502
de0.2222222222222222
fi0.21875
hu0.2128935532233883
yo0.16930379746835442
eu0.1518578352180937
tr0.12060301507537688
reliabletrue
passestrue
4
name"Marie"
dialogue"L'orchard — oui, oui, j'étais là. J'ai pris des photos, et puis... il y avait un homme. Il est... il a disparu. Disparu! Devant mes yeux!"
detectedLang"fr"
heavyLang"fr"
scores
fr0.8083801737353091
ca0.578177727784027
es0.4922139471902505
en0.4665718349928876
ro0.46351931330472107
it0.4529540481400437
no0.41222570532915365
da0.36006825938566556
de0.36006825938566556
pt0.355116079105761
lv0.35344827586206895
et0.34268185801928136
lt0.34210526315789475
vi0.3023255813953488
yo0.2944496707431797
cs0.2711370262390671
tr0.2625368731563422
tl0.2454728370221328
sq0.24318869828456105
nl0.22360248447204967
pl0.21875
sk0.20969441517386725
az0.19786096256684493
hu0.17218543046357618
fi0.15824915824915825
sv0.15730337078651685
hr0.12993039443155452
sl0.10714285714285714
hi0.09310761789600969
is0.09090909090909091
eu0.08536585365853659
ms0.07749077490774908
reliabletrue
passestrue
5
name"Hunter"
dialogue"Okay, you're talking real fast there. Disparu... that means... gone? Disappeared?"
detectedLang"en"
heavyLang"en"
scores
en0.7963994856408059
de0.46868008948545864
tl0.3994943109987357
fr0.34119278779472956
no0.33936022253129344
pt0.3384401114206128
nl0.3035190615835778
it0.27811550151975684
ca0.2725880551301685
es0.2725880551301685
ro0.26127527216174184
sv0.2554858934169279
sq0.23633440514469453
eu0.2263843648208469
ms0.17102966841186737
da0.1532976827094474
az0.1316270566727605
sl0.1316270566727605
is0.13003663003663005
cs0.12683823529411764
sk0.12683823529411764
reliabletrue
passestrue
6
name"Marie"
dialogue"Oui! Disparu! J'ai tout vu. C'était horrible. Regardez — regardez la photo!"
detectedLang"fr"
heavyLang"fr"
scores
fr0.7839654344695152
es0.4983277591973244
en0.4972067039106145
ca0.4943820224719101
ro0.42233632862644416
it0.42159383033419023
tl0.40867279894875164
eu0.2868462757527734
cs0.25864909390444807
sq0.24623115577889448
nl0.1818181818181818
pt0.1818181818181818
yo0.16974169741697415
no0.15730337078651685
vi0.15730337078651685
hi0.14611005692599618
de0.13294797687861273
sk0.13294797687861273
reliabletrue
passestrue
7
name"Hunter"
dialogue"Wait. Hold on. That's — is that a person? Right there at the tree line? Miss, this is — this could be important. Can you slow down for me?"
detectedLang"en"
heavyLang"en"
scores
en0.8322147651006712
tl0.6605854900296988
fr0.546742209631728
da0.5444191343963554
no0.5397008055235903
ca0.4666666666666667
sq0.46344735077129445
pt0.4478951000690131
yo0.4306049822064057
nl0.4043186895011169
es0.3934799090219864
ro0.38366718027734975
hu0.3798449612403101
it0.37888198757763975
de0.3675889328063241
cs0.3453355155482815
sv0.3191489361702128
et0.31682322801024765
lt0.2963940193491645
ms0.2812219227313567
is0.27338782924613986
tr0.27338782924613986
fi0.2647058823529412
sk0.24812030075187969
hr0.24457034938621341
pl0.2366412213740458
az0.2047713717693837
sl0.18200408997955012
lv0.15343915343915343
hi0.09502262443438914
eu0.08045977011494253
vi0.08045977011494253
reliabletrue
passestrue
8
name"Marie"
dialogue"Je ne sais pas comment vous expliquer. Je ne parle pas anglais. S'il vous plaît... je suis effrayée. Quelqu'un me suivait."
detectedLang"fr"
heavyLang"fr"
scores
fr0.7906976744186046
ca0.5305980528511822
nl0.4755244755244755
sl0.4742990654205608
sq0.4697564807541241
it0.452998379254457
en0.4485294117647059
es0.4015957446808511
cs0.39189189189189183
lt0.38524590163934425
ro0.38130155820348305
hr0.37788018433179726
pt0.3571428571428572
de0.3522072936660269
sk0.3408203125
lv0.2749731471535983
ms0.2549668874172185
yo0.25083240843507215
pl0.25
no0.24327354260089684
hu0.23900789177001125
sv0.22235023041474655
tl0.22235023041474655
fi0.1945107398568019
et0.18967587034813926
tr0.1847826086956522
az0.1646039603960396
da0.15730337078651685
reliabletrue
passestrue
9
name"Hunter"
dialogue"Hey, hey — easy. I can tell you're scared. I just don't — God, I wish I had a translator. Effrayée. Okay. Scared. I got that much."
detectedLang"en"
heavyLang"en"
scores
en0.7852659398744631
ca0.4362532523850824
sv0.4337979094076655
tl0.4257950530035336
ro0.4186046511627907
hr0.40909090909090906
da0.40202391904323825
no0.4003690036900369
nl0.3925233644859813
it0.37560038424591735
pl0.36149312377210213
sq0.35194416749750745
et0.3486973947895792
es0.3257261410788381
cs0.3128964059196617
tr0.3062966915688367
pt0.3018259935553169
az0.2927094668117519
sk0.2896174863387978
hu0.2554410080183276
vi0.2537313432835821
lt0.2459396751740139
sl0.24418604651162787
yo0.24065420560747666
de0.236192714453584
lv0.23529411764705882
fr0.23258559622195982
ms0.21968787515006
is0.1751269035532995
eu0.17407878017789072
be0.09722222222222222
fi0.08835904628330996
uk0.08835904628330996
reliabletrue
passestrue
10
name"Marie"
dialogue"Merci. Merci de... d'écouter."
detectedLang"fr"
heavyLang"fr"
scores
fr0.7787610619469026
es0.6163682864450128
it0.6124031007751938
pt0.6113989637305699
ca0.609375
nl0.6021220159151194
de0.5934959349593496
en0.589041095890411
ms0.5786516853932584
sv0.5750708215297451
da0.5626822157434402
tr0.526813880126183
ro0.4983277591973244
tl0.4897959183673469
no0.42084942084942084
hu0.39271255060728744
yo0.38524590163934425
pl0.3670886075949367
cs0.33920704845814975
eu0.3181818181818182
sl0.3150684931506849
az0.29577464788732394
sq0.29577464788732394
reliabletrue
passestrue
11
name"Hunter"
dialogue"I'm sorry, I have to go. Stay here, okay? Don't move. Don't go anywhere. I'll bring someone who speaks French. You — you stay. Got it?"
detectedLang"en"
heavyLang"en"
scores
en0.8028283927114496
tl0.5809248554913294
da0.44656488549618323
sq0.3544078361531611
yo0.34210526315789475
no0.3403093721565059
pl0.33729433272394876
pt0.32242990654205606
hr0.31214421252371916
sv0.3101807802093245
cs0.3022136669874879
it0.28711897738446407
lv0.2720883534136546
es0.25641025641025644
de0.25564681724846
sk0.21959095801937567
et0.21790722761596548
lt0.18721973094170402
ca0.15990730011587484
sl0.1430260047281324
nl0.13997627520759193
ms0.11260709914320685
ro0.11042944785276074
be0.0880503144654088
tr0.0880503144654088
hu0.0845959595959596
az0.0799492385786802
is0.0799492385786802
uk0.0799492385786802
vi0.0799492385786802
reliabletrue
passestrue
12
name"Marie"
dialogue"Vous partez? Mais — attendez! La photo! Vous ne l'avez pas vue!"
detectedLang"fr"
heavyLang"fr"
scores
fr0.7986036519871107
ca0.6369796708615681
it0.6181262729124236
en0.5415647921760391
es0.5393120393120393
sq0.508519003931848
ro0.48700410396716826
pt0.48489010989010994
tl0.4588744588744588
no0.44196428571428575
lt0.4248466257668711
lv0.4009584664536741
nl0.3961352657004831
cs0.3832236842105263
tr0.3760399334442596
sl0.34210526315789475
hr0.32432432432432434
de0.3119266055045872
da0.2951127819548872
ms0.29111531190926276
yo0.2870722433460076
hu0.27884615384615385
sv0.27184466019417475
et0.2647058823529412
fi0.19006479481641467
vi0.1830065359477124
az0.1758241758241758
eu0.1758241758241758
hi0.17035398230088497
pl0.15730337078651685
sk0.14383561643835618
reliabletrue
passestrue
13
name"Hunter"
dialogue"Whatever the hell she just saw, it's connected. I know it."
detectedLang"en"
heavyLang"en"
scores
en0.8232799245994344
sv0.5198463508322664
ca0.49528936742934054
fr0.4703389830508474
no0.4665718349928876
tl0.4658119658119659
da0.4517543859649123
sq0.4427934621099554
yo0.4186046511627907
it0.33745583038869253
ms0.3218806509945751
nl0.31444241316270566
et0.3055555555555556
zh0.28977272727272724
lv0.28435114503816794
hr0.2704280155642024
pl0.251497005988024
cs0.21875
ro0.1935483870967742
pt0.1610738255033557
sk0.1610738255033557
be0.15730337078651685
tr0.15730337078651685
hu0.1515837104072398
az0.14383561643835618
is0.14383561643835618
lt0.14383561643835618
uk0.14383561643835618
vi0.14383561643835618
reliabletrue
passestrue
14
name"Marie"
dialogue"...il était là. Je le jure. Il était là."
detectedLang"fr"
heavyLang"fr"
scores
fr0.8270750988142294
yo0.6806569343065694
it0.642126789366053
sl0.6236559139784946
ro0.5394736842105263
hr0.4942196531791907
vi0.4728915662650602
cs0.45652173913043476
sk0.453125
nl0.4186046511627907
es0.40476190476190477
az0.396551724137931
hu0.358974358974359
pl0.34210526315789475
ca0.32432432432432434
tr0.32432432432432434
de0.3137254901960784
reliabletrue
passestrue