Run: 2026-05-29-01KSSK39Y3GRA2F373CHNCZY7R

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Language Writing
Scenario:
Character dialogue (German) in a story
Duration:
16.2s
Cost:
$0.027505
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="Melanie"> Melanie is a 30-year old college student on a study abroad program. Born in Germany, she is fluent in German 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 German, 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: Melanie 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 German, and Hunter looks confused. They talk for a while, until Hunter gets a call and has to leave. Return the dialogue between Melanie and Hunter as a voice sheet: Melanie: "..." Hunter: "..."

Model response

AI
Melanie: *(murmuring to herself, scrolling through photos)* "Das kann doch nicht sein... das war doch gestern noch da..." Hunter: "Excuse me, miss? Mind if I ask you a few questions?" Melanie: *(startled, looking up)* "Oh! Entschuldigung, ich... haben Sie mit mir gesprochen?" Hunter: "Detective Hunter, Alborn PD. I'm looking into some disappearances around town. You been here long?" Melanie: "Verschwunden? Ja, ja — ich habe etwas gesehen! Gestern Abend, am See. Ich habe Fotos gemacht, aber..." Hunter: *(squinting)* "I'm sorry, I didn't catch any of that. You don't speak English?" Melanie: "Nein, ich spreche kein Englisch. Aber bitte, schauen Sie — hier, auf dem Foto!" *(turning the camera toward him, hands trembling)* Hunter: "Whoa, easy now. You're shaking. Something scare you?" Melanie: "Da war jemand am Wasser, und dann... dann war er einfach weg. Einfach verschwunden, verstehen Sie?" Hunter: *(rubbing the back of his neck)* "Alright, I'm gettin' nothing here. German, right? Deutsch?" Melanie: *(nodding eagerly)* "Ja! Deutsch! Sie verstehen?" Hunter: "No. No, I really don't. But that picture..." *(leaning in to look)* "That's the old boathouse. When'd you take this?" Melanie: "Gestern Abend. Es war schon dunkel. Sehen Sie diesen Schatten dort?" Hunter: "That timestamp — 9:47 PM. Last night." *(muttering)* "That's the same window..." Melanie: "Bitte, ich weiß nicht, was ich tun soll. Ich habe Angst." Hunter: *(softening slightly)* "Hey. Whatever you saw, it's got you spooked. I get that much." Melanie: "Können Sie mir helfen? Bitte." Hunter: *(his phone buzzes)* "Hold that thought." *(answering)* "Hunter. ...What? When? ...Yeah, I'm on my way." *(hanging up, standing)* "I gotta go. Look — don't go anywhere. Stay. Right here. Understand? Stay." Melanie: "Sie gehen? Warten Sie — nehmen Sie wenigstens das Foto!" Hunter: *(already moving, pointing back at her)* "Stay put. I'll bring someone who speaks your language." Melanie: *(calling after him, clutching the camera)* "Aber... das Foto! Detective! Das Foto ist wichtig!"
created_at"2026-05-29T10:04:54.606Z" 5/29/2026, 10:04:54 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2713
moderation_latency(null)
generation_time16187
tokens_prompt319
tokens_completion604
native_tokens_prompt416
native_tokens_completion1017
native_tokens_completion_images(null)
native_tokens_reasoning50
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"
usage0.027505
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_019oQ87ViRpbZCkGeWvXj2Fg"
is_byokfalse
latency1263
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-1780049094-1zY0vtaXBSgcKQnK0eQ9"
session_id(null)
api_type"completions"
id"gen-1780049094-29Ni3gZALLclGLno7zKS"
upstream_id"msg_019oQ87ViRpbZCkGeWvXj2Fg"
total_cost0.027505
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"Melanie"
dialogue"Das kann doch nicht sein... das war doch gestern noch da..."
detectedLang"de"
heavyLang"de"
scores
de0.8511099079588522
pt0.5820668693009119
nl0.4649805447470817
en0.4364754098360656
it0.4136460554371002
fr0.41113490364025695
no0.3778280542986425
is0.3648960739030023
es0.34210526315789475
tl0.3373493975903614
ro0.3341404358353511
eu0.31077694235588976
sl0.30904522613065327
hr0.3002544529262086
az0.27821522309711283
tr0.26861702127659576
cs0.26666666666666666
sv0.26273458445040215
da0.24657534246575344
ca0.23822714681440443
yo0.21428571428571427
pl0.1863905325443787
vi0.1863905325443787
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss? Mind if I ask you a few questions?"
detectedLang"en"
heavyLang"en"
scores
en0.7938751472320377
fr0.6136865342163355
it0.6106785317018909
tl0.5512820512820513
ca0.5430809399477807
pt0.5345744680851064
sq0.5028409090909091
cs0.47368421052631576
hu0.47049924357034795
es0.4696969696969697
et0.4688922610015175
no0.4664634146341463
sv0.46236559139784944
nl0.42052980132450335
hr0.4176372712146422
pl0.39759036144578314
ro0.3955094991364421
da0.3761140819964349
yo0.37050359712230213
sk0.36594202898550726
sl0.3371212121212121
ms0.29577464788732394
tr0.29577464788732394
lt0.29292929292929293
fi0.2827868852459016
is0.2827868852459016
az0.2753623188405797
lv0.2753623188405797
vi0.2753623188405797
be0.16666666666666666
eu0.16666666666666666
de0.1606714628297362
uk0.15254237288135594
reliabletrue
passestrue
2
name"Melanie"
dialogue"Oh! Entschuldigung, ich... haben Sie mit mir gesprochen?"
detectedLang"de"
heavyLang"de"
scores
de0.8271889400921658
nl0.5481927710843374
pl0.37707641196013286
es0.3206521739130435
da0.31444241316270566
sk0.24849699398797598
ms0.2299794661190965
sv0.2203742203742204
fr0.21052631578947367
hr0.21052631578947367
tr0.20042643923240938
hu0.19006479481641467
ca0.17218543046357618
reliabletrue
passestrue
3
name"Hunter"
dialogue"Detective Hunter, Alborn PD. I'm looking into some disappearances around town. You been here long?"
detectedLang"en"
heavyLang"en"
scores
en0.797077922077922
fr0.5411160058737151
tl0.52217125382263
pt0.42660550458715596
it0.410377358490566
ro0.39671814671814676
ca0.3842364532019704
nl0.3602865916069601
es0.29932735426008966
de0.28734321550741165
sq0.28734321550741165
no0.2807825086306099
sv0.24969987995198079
da0.20986093552465232
ms0.20076726342711
cs0.1935483870967742
sl0.1677762982689747
vi0.1367403314917127
lv0.10586552217453504
is0.10201149425287356
hr0.09682080924855492
tr0.08625730994152046
reliabletrue
passestrue
4
name"Melanie"
dialogue"Verschwunden? Ja, ja — ich habe etwas gesehen! Gestern Abend, am See. Ich habe Fotos gemacht, aber..."
detectedLang"de"
heavyLang"de"
scores
de0.8106712564543889
nl0.56
en0.4516450648055832
sv0.4167550371155886
ca0.4136460554371002
et0.4130202774813233
es0.39956331877729256
ro0.367816091954023
pt0.35064935064935066
sq0.3349455864570738
sk0.3333333333333333
da0.3226600985221675
pl0.3159203980099502
lv0.311639549436796
fi0.30467762326169406
fr0.28848641655886154
it0.28664072632944226
lt0.2857142857142857
no0.2791612057667104
tr0.25775978407557354
hu0.24242424242424243
is0.2109038737446198
sl0.2109038737446198
az0.17664670658682635
eu0.1729323308270677
hi0.13657770800627944
ms0.12420382165605094
tl0.12280701754385964
yo0.12
cs0.1085899513776337
hr0.1085899513776337
reliabletrue
passestrue
5
name"Hunter"
dialogue"I'm sorry, I didn't catch any of that. You don't speak English?"
detectedLang"en"
heavyLang"en"
scores
en0.8179611650485438
tl0.5894160583941606
no0.4163424124513619
sv0.4007989347536618
it0.39189189189189183
ca0.37586685159500693
de0.3382352941176471
da0.31921331316187596
hr0.31921331316187596
yo0.30769230769230765
cs0.2890995260663507
ro0.2647058823529412
is0.2524916943521595
sq0.22945205479452058
nl0.21875
pl0.21875
pt0.1818181818181818
fr0.16820702402957485
ms0.13793103448275862
sk0.13793103448275862
be0.1346153846153846
tr0.1346153846153846
hu0.12959381044487428
az0.12280701754385964
et0.12280701754385964
lt0.12280701754385964
lv0.12280701754385964
uk0.12280701754385964
vi0.12280701754385964
reliabletrue
passestrue
6
name"Melanie"
dialogue"Nein, ich spreche kein Englisch. Aber bitte, schauen Sie — hier, auf dem Foto!"
detectedLang"de"
heavyLang"de"
scores
de0.8275862068965517
nl0.6090356211989574
no0.4791666666666667
da0.471830985915493
pl0.39189189189189183
sk0.3732590529247911
ro0.34782608695652173
hr0.3161094224924012
it0.3150684931506849
sl0.293563579277865
sv0.2857142857142857
et0.27652733118971057
en0.25864909390444807
lt0.16666666666666666
fr0.16356877323420074
ms0.13793103448275862
is0.13294797687861273
lv0.12280701754385964
ca0.11591355599214145
cs0.11591355599214145
es0.11591355599214145
pt0.11591355599214145
reliabletrue
passestrue
7
name"Hunter"
dialogue"Whoa, easy now. You're shaking. Something scare you?"
detectedLang"en"
heavyLang"en"
scores
en0.8021911138161899
tl0.5409604519774012
it0.37739463601532564
ro0.3725868725868726
pt0.3143459915611814
nl0.2388758782201405
no0.20924574209245742
de0.19753086419753088
cs0.1935483870967742
es0.1935483870967742
ms0.1935483870967742
fr0.1792929292929293
is0.1792929292929293
sv0.1792929292929293
reliabletrue
passestrue
8
name"Melanie"
dialogue"Da war jemand am Wasser, und dann... dann war er einfach weg. Einfach verschwunden, verstehen Sie?"
detectedLang"de"
heavyLang"de"
scores
de0.8275862068965517
nl0.5670995670995671
da0.5387453874538745
no0.49849548645937813
en0.4186046511627907
is0.414519906323185
ro0.39903846153846156
eu0.3234100135317997
fr0.3234100135317997
sv0.3197278911564626
tr0.30747922437673125
es0.2917847025495751
pt0.274310595065312
it0.2647058823529412
hu0.26035502958579887
pl0.25925925925925924
az0.24812030075187969
yo0.24585218702865763
sq0.21752738654147105
ca0.21011058451816747
sl0.19743178170144465
hr0.19093851132686085
fi0.14965986394557826
ms0.14965986394557826
hi0.1482112436115843
lt0.1334488734835355
tl0.11190053285968028
vi0.11190053285968028
reliabletrue
passestrue
9
name"Hunter"
dialogue"Alright, I'm gettin' nothing here. German, right? Deutsch?"
detectedLang"en"
heavyLang"en"
scores
en0.758364312267658
tl0.5795601552393272
de0.5649263721552878
ca0.36149312377210213
it0.36149312377210213
tr0.35000000000000003
sq0.34343434343434337
ro0.33127572016460904
ms0.3128964059196617
nl0.1935483870967742
da0.18546365914786966
fr0.18546365914786966
no0.18546365914786966
yo0.18546365914786966
az0.17721518987341772
es0.17721518987341772
sv0.17721518987341772
reliabletrue
passestrue
10
name"Melanie"
dialogue"Ja! Deutsch! Sie verstehen?"
detectedLang"de"
heavyLang"de"
scores
de0.8338081671415004
ca0.6049661399548533
fi0.5793269230769231
pl0.5231607629427792
et0.46808510638297873
sq0.4336569579288026
sv0.4336569579288026
eu0.396551724137931
lv0.396551724137931
nl0.3320610687022901
sk0.32432432432432434
da0.3137254901960784
sl0.3137254901960784
lt0.3055555555555556
yo0.3
hu0.29149797570850206
it0.29149797570850206
is0.2768595041322314
en0.2647058823529412
es0.2647058823529412
fr0.2647058823529412
no0.2647058823529412
pt0.2647058823529412
az0.25213675213675213
ro0.25213675213675213
reliabletrue
passestrue
11
name"Hunter"
dialogue"That's the old boathouse. When'd you take this?"
detectedLang"en"
heavyLang"en"
scores
en0.782766111513396
tl0.6487119437939111
sq0.3723849372384937
fr0.3562231759656652
yo0.2628992628992629
no0.24050632911392408
nl0.21875
cs0.20634920634920634
da0.20634920634920634
ms0.20634920634920634
sl0.20634920634920634
sv0.20634920634920634
reliabletrue
passestrue
12
name"Melanie"
dialogue"Gestern Abend. Es war schon dunkel. Sehen Sie diesen Schatten dort?"
detectedLang"de"
heavyLang"de"
scores
de0.832036775106082
nl0.5609981515711645
no0.4739756367663345
en0.45776255707762553
da0.42143727161997563
sv0.3807040417209909
ca0.3290960451977401
es0.3233618233618234
hu0.3115942028985507
fi0.2899850523168909
lv0.28785607196401797
it0.26356589147286824
tl0.25196850393700787
eu0.19491525423728812
pl0.1908006814310051
lt0.1607773851590106
pt0.1607773851590106
cs0.15780141843971632
sk0.14874551971326164
ms0.14721723518850988
fr0.14414414414414414
is0.14414414414414414
sl0.1316270566727605
sq0.1316270566727605
tr0.1316270566727605
ro0.13003663003663005
reliabletrue
passestrue
13
name"Hunter"
dialogue"That's the same window..."
detectedLang"en"
heavyLang"en"
scores
en0.8308906426155581
no0.5575221238938053
sq0.5426829268292682
nl0.5176848874598071
yo0.4163424124513619
tl0.4094488188976378
de0.3670886075949367
da0.34210526315789475
fr0.34210526315789475
hr0.34210526315789475
ms0.34210526315789475
sv0.34210526315789475
tr0.33920704845814975
reliabletrue
passestrue
14
name"Melanie"
dialogue"Bitte, ich weiß nicht, was ich tun soll. Ich habe Angst."
detectedLang"de"
heavyLang"de"
scores
de0.8361895161290323
nl0.6242774566473988
yo0.38095238095238093
da0.3186582809224318
no0.3186582809224318
en0.3157894736842105
sk0.27616926503340755
pl0.26136363636363635
et0.25799086757990863
cs0.23529411764705882
ms0.21307506053268765
it0.1875
reliabletrue
passestrue
15
name"Hunter"
dialogue"Hey. Whatever you saw, it's got you spooked. I get that much."
detectedLang"en"
heavyLang"en"
scores
en0.8101952277657266
tl0.4814814814814815
no0.3996569468267582
da0.39759036144578314
sv0.39236111111111116
nl0.3554327808471455
cs0.3433395872420263
is0.317738791423002
hr0.2842535787321063
ca0.2827868852459016
sq0.2768595041322314
pl0.2647058823529412
it0.24731182795698922
ms0.2222222222222222
ro0.20454545454545453
yo0.19908466819221968
fr0.17061611374407584
pt0.17061611374407584
sk0.17061611374407584
be0.16666666666666666
tr0.16666666666666666
hu0.1606714628297362
az0.15254237288135594
et0.15254237288135594
lt0.15254237288135594
lv0.15254237288135594
uk0.15254237288135594
vi0.15254237288135594
reliabletrue
passestrue
16
name"Melanie"
dialogue"Können Sie mir helfen? Bitte."
detectedLang"de"
heavyLang"de"
scores
de0.8364677023712184
nl0.6240601503759399
no0.4910941475826972
et0.3610223642172524
pl0.358974358974359
hu0.35064935064935066
fi0.3464052287581699
sv0.3464052287581699
hr0.3333333333333333
az0.2779783393501805
is0.2779783393501805
da0.2727272727272727
it0.2727272727272727
reliabletrue
passestrue
17
name"Hunter"
dialogue"I gotta go. Look — don't go anywhere. Stay. Right here. Understand? Stay."
detectedLang"en"
heavyLang"en"
scores
en0.7866465863453815
tl0.5516877637130801
no0.5483528161530287
da0.5473908413205538
sv0.5005875440658049
de0.448051948051948
it0.42411924119241196
pl0.42333785617367703
sq0.42333785617367703
yo0.358974358974359
cs0.3078175895765472
nl0.2951907131011609
hu0.2916666666666667
ro0.2784380305602716
sk0.2747440273037543
hr0.24645390070921988
ca0.24511545293072823
is0.24377224199288253
fi0.2085661080074488
fr0.14829659318637273
be0.1414141414141414
tr0.1414141414141414
az0.1290983606557377
et0.1290983606557377
lt0.1290983606557377
lv0.1290983606557377
uk0.1290983606557377
vi0.1290983606557377
reliabletrue
passestrue
18
name"Melanie"
dialogue"Sie gehen? Warten Sie — nehmen Sie wenigstens das Foto!"
detectedLang"de"
heavyLang"de"
scores
de0.8320268756998881
nl0.5275590551181102
pl0.4809688581314879
no0.46714031971580816
da0.45848375451263534
pt0.42857142857142855
eu0.39879759519038077
sv0.38271604938271603
fi0.3644067796610169
ca0.3006993006993007
es0.3006993006993007
sq0.25
ms0.20634920634920634
sl0.20424403183023873
sk0.2
tr0.1891891891891892
it0.17355371900826447
lv0.17355371900826447
ro0.17355371900826447
cs0.16434540389972147
et0.16434540389972147
hr0.16434540389972147
reliabletrue
passestrue
19
name"Hunter"
dialogue"Stay put. I'll bring someone who speaks your language."
detectedLang"en"
heavyLang"en"
scores
en0.8056635202665186
tl0.49784791965566716
da0.44620253164556967
de0.42434210526315785
ms0.4233937397034596
et0.38271604938271603
no0.37722419928825623
nl0.36936936936936937
hr0.36247723132969034
sv0.34944237918215615
ro0.3482309124767225
es0.3027888446215139
pt0.3027888446215139
is0.1935483870967742
eu0.1822429906542056
fr0.16666666666666666
lt0.15254237288135594
yo0.15254237288135594
reliabletrue
passestrue
20
name"Melanie"
dialogue"Aber... das Foto! Detective! Das Foto ist wichtig!"
detectedLang"de"
heavyLang"de"
scores
de0.8028045574057844
pt0.6370967741935484
ro0.5833333333333334
en0.5746691871455577
nl0.533195020746888
ca0.5150862068965517
es0.512987012987013
it0.5119305856832972
tl0.5033112582781457
fr0.4617224880382775
no0.4186046511627907
da0.4063324538258575
sl0.3902439024390244
cs0.3679775280898876
hr0.358974358974359
hi0.3202416918429003
tr0.29467084639498436
sq0.29245283018867924
sk0.25
sv0.22945205479452058
lv0.21875
pl0.21875
et0.2077464788732394
reliabletrue
passestrue