Run: 2026-05-29-01KSSJP75AJF7P5W96DV7F914H

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Language Writing
Scenario:
Character dialogue (German) in a story
Duration:
20.3s
Cost:
$0.032255
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 her camera)* "Das kann doch nicht sein... das habe ich wirklich fotografiert?" Hunter: "Excuse me, miss. Mind if I ask you a few questions? I'm Detective Hunter, Alborn PD. There was an incident last night down by the orchard." Melanie: *(looking up, startled)* "Oh— entschuldigung, ich... ich spreche kein Englisch. Tut mir leid." Hunter: "...I'm sorry, what was that?" Melanie: *(visibly shaken, clutching the camera)* "Gestern Abend, da war etwas. Ich habe es gesehen, am Obstgarten. Ich habe ein Foto gemacht, aber... aber ich verstehe nicht, was das ist." Hunter: "Okay, slow down. Orchard? You said something about the orchard, right? You were there?" Melanie: *(nodding rapidly, turning the camera toward him)* "Ja, ja! Hier, schauen Sie. Das ist es. Sehen Sie diese Gestalt? Das war kein Mensch. Ich schwöre, das war kein Mensch." Hunter: *(leaning in, squinting at the screen)* "Huh. That's... I can't make out what that is. Can you send this to me? Email? Phone?" Melanie: "Ich hatte solche Angst. Ich bin einfach gelaufen. Ich wollte nur Fotos vom Sonnenuntergang machen, das ist alles. Und dann war da diese... diese Sache." Hunter: *(rubbing his temple)* "I'm not getting any of this. Is there— do you have someone who can translate? A friend, maybe?" Melanie: *(pointing at the photo, urgent)* "Bitte, Sie müssen mir glauben. Die Leute, die verschwunden sind— ich glaube, es hat etwas damit zu tun." Hunter: "Disappearances. You said 'verschwunden'— that's German for... gone? Missing?" *(pausing)* "You know something about the missing people?" Melanie: *(eyes wide, relieved he caught a word)* "Ja! Ja, genau! Verschwunden! Sie verstehen mich?" Hunter: "Easy, easy. I caught one word. We need a translator. Don't go anywhere, alright? Stay right here." Melanie: *(slumping back, frustrated)* "Ich weiß nicht, wie ich es Ihnen erklären soll..." Hunter: *(his phone rings; he answers)* "Hunter. ...What? When? ...No, I'm on my way. Don't touch anything." *(he hangs up, turning back to her)* "I have to go. Listen— stay here. I'll bring someone who speaks your language. Don't move." *(he points firmly at the table)* "Stay. Okay?" Melanie: *(confused, watching him stand)* "Warten Sie— wohin gehen Sie? Was ist passiert?" Hunter: *(already backing away)* "I'll be back. Stay put." *(he hurries out)* Melanie: *(alone, looking down at the photo, whispering)* "...Bitte kommen Sie zurück."
created_at"2026-05-29T09:57:45.779Z" 5/29/2026, 9:57:45 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4098
moderation_latency(null)
generation_time20249
tokens_prompt319
tokens_completion731
native_tokens_prompt416
native_tokens_completion1207
native_tokens_completion_images(null)
native_tokens_reasoning78
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"
usage0.032255
router(null)
provider_responses
0
endpoint_id"dfc0e5bd-d703-4fe2-a7bb-655eb95d5441"
id"msg_01UW4AMFHPh4KhNvk6KYgigQ"
is_byokfalse
latency2024
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-1780048665-rVqZ1q4lvdPr0ck5UCyw"
session_id(null)
api_type"completions"
id"gen-1780048665-3M5YF8shSWClfhgUbyeB"
upstream_id"msg_01UW4AMFHPh4KhNvk6KYgigQ"
total_cost0.032255
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 habe ich wirklich fotografiert?"
detectedLang"de"
heavyLang"de"
scores
de0.840696686491079
no0.4444444444444444
pt0.43438914027149317
nl0.41588785046728977
sk0.4038155802861685
pl0.3872549019607844
cs0.3842364532019704
ca0.37707641196013286
fr0.3131868131868132
hr0.267578125
sl0.267578125
sq0.2647058823529412
tr0.25595238095238093
it0.251497005988024
lt0.251497005988024
es0.2454728370221328
et0.2454728370221328
lv0.2454728370221328
ro0.2454728370221328
da0.23935091277890466
sv0.23935091277890466
is0.17218543046357618
az0.1359447004608295
en0.1359447004608295
ms0.1359447004608295
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss. Mind if I ask you a few questions? I'm Detective Hunter, Alborn PD. There was an incident last night down by the orchard."
detectedLang"en"
heavyLang"en"
scores
en0.7914379802414928
tl0.588209796272215
fr0.5856955952900131
it0.5230923694779117
nl0.5046923879040667
ro0.5026178010471204
de0.4960212201591512
ca0.47802197802197804
no0.4674887892376681
sq0.4508670520231214
pt0.4457409568261376
da0.4368701837581506
cs0.40401505646173147
es0.39797211660329534
sv0.3786788750817528
yo0.3741765480895916
et0.35153583617747436
sk0.32956951305575155
sl0.31308749096167754
pl0.3060628195763331
hr0.28409947249434814
hu0.2803030303030303
ms0.2770167427701674
az0.2263843648208469
tr0.22575387123064386
vi0.2030201342281879
lt0.17677642980935876
eu0.15480427046263345
fi0.12683823529411764
is0.12683823529411764
lv0.12280701754385964
be0.06862745098039216
uk0.06219151036525173
reliabletrue
passestrue
2
name"Melanie"
dialogue"Oh— entschuldigung, ich... ich spreche kein Englisch. Tut mir leid."
detectedLang"de"
heavyLang"de"
scores
de0.7857525441885378
nl0.6183206106870229
hr0.38366718027734975
sk0.3254637436762226
ms0.3150684931506849
ro0.30675909878682844
no0.2844364937388193
en0.28186714542190305
da0.26062846580406657
pl0.22330097087378642
sl0.21568627450980393
lt0.1836734693877551
sv0.15254237288135594
is0.14712153518123666
it0.14712153518123666
reliabletrue
passestrue
3
name"Hunter"
dialogue"...I'm sorry, what was that?"
detectedLang"en"
heavyLang"en"
scores
en0.821852731591449
tl0.5714285714285714
nl0.471830985915493
de0.44237918215613387
it0.39999999999999997
pt0.39999999999999997
yo0.3670886075949367
reliabletrue
passestrue
4
name"Melanie"
dialogue"Gestern Abend, da war etwas. Ich habe es gesehen, am Obstgarten. Ich habe ein Foto gemacht, aber... aber ich verstehe nicht, was das ist."
detectedLang"de"
heavyLang"de"
scores
de0.8288452761296212
nl0.5356037151702787
es0.4270435446906035
en0.40898345153664306
pt0.402390438247012
ca0.39903846153846156
no0.38524590163934425
ro0.34268185801928136
it0.3049119555143651
eu0.30102516309412863
sl0.2809204218600192
sk0.2690058479532163
tr0.26108374384236455
da0.251497005988024
sv0.24698795180722888
pl0.24318869828456105
is0.23857868020304565
hi0.2046659597030753
lv0.19614147909967844
hr0.19093851132686085
hu0.1883116883116883
fi0.18655097613882862
lt0.1830065359477124
az0.18032786885245902
yo0.17763157894736845
cs0.1749174917491749
fr0.1601343784994401
tl0.15730337078651685
ms0.09420289855072464
vi0.07749077490774908
et0.07292954264524104
sq0.07292954264524104
reliabletrue
passestrue
5
name"Hunter"
dialogue"Okay, slow down. Orchard? You said something about the orchard, right? You were there?"
detectedLang"en"
heavyLang"en"
scores
en0.8207885304659498
tl0.6007098491570542
de0.42084942084942084
no0.3515850144092219
fr0.3353028064992614
yo0.2868462757527734
nl0.26108374384236455
ms0.25742574257425743
sq0.25742574257425743
da0.2524916943521595
et0.199288256227758
cs0.14772727272727273
es0.14772727272727273
pt0.14772727272727273
sv0.14772727272727273
reliabletrue
passestrue
6
name"Melanie"
dialogue"Ja, ja! Hier, schauen Sie. Das ist es. Sehen Sie diese Gestalt? Das war kein Mensch. Ich schwöre, das war kein Mensch."
detectedLang"de"
heavyLang"de"
scores
de0.8251192368839428
nl0.4878957169459963
sv0.41737288135593226
es0.4136460554371002
ca0.3834080717488789
pt0.38271604938271603
tr0.36342592592592593
pl0.3582263710618437
fi0.30467762326169406
lv0.29936305732484075
sk0.2744063324538259
da0.2403314917127072
fr0.233983286908078
it0.2286115007012623
et0.21875
en0.1791044776119403
eu0.1729323308270677
hi0.16158536585365854
hu0.15644171779141106
no0.14596273291925466
lt0.1419656786271451
is0.12698412698412698
sl0.12698412698412698
sq0.12
tl0.12
yo0.12
ro0.1143317230273752
reliabletrue
passestrue
7
name"Hunter"
dialogue"Huh. That's... I can't make out what that is. Can you send this to me? Email? Phone?"
detectedLang"en"
heavyLang"en"
scores
en0.8253493013972056
tl0.5786516853932584
cs0.4712990936555891
sq0.4659206510681587
no0.396551724137931
yo0.3958573072497123
da0.37722419928825623
nl0.37722419928825623
pl0.3320610687022901
hr0.3269230769230769
tr0.2981283422459893
hu0.29624664879356566
ca0.2905405405405405
sl0.284741144414169
sk0.279835390946502
vi0.27184466019417475
it0.27083333333333337
lv0.2605633802816902
fr0.25
ms0.2446043165467626
lt0.24132947976878616
et0.23133235724743775
is0.22794117647058826
az0.21052631578947367
sv0.2081447963800905
es0.16267942583732056
eu0.15865384615384615
ro0.14634146341463414
pt0.1435562805872757
de0.125
fi0.125
be0.11764705882352942
uk0.10714285714285714
reliabletrue
passestrue
8
name"Melanie"
dialogue"Ich hatte solche Angst. Ich bin einfach gelaufen. Ich wollte nur Fotos vom Sonnenuntergang machen, das ist alles. Und dann war da diese... diese Sache."
detectedLang"de"
heavyLang"de"
scores
de0.829136690647482
nl0.49762030671602325
da0.4193154034229829
it0.3902439024390244
no0.38431626701231364
fr0.36198791134989927
pt0.3493150684931507
en0.31899641577060933
tr0.317038102084831
tl0.3019838354151359
ms0.2803030303030303
es0.27646610814927647
et0.2725880551301685
ro0.25723221266614543
sv0.20767306088407003
pl0.19966301600673966
ca0.1955969517358171
is0.16958041958041958
sk0.16739702015775634
sl0.16666666666666666
hr0.16299559471365638
az0.14798206278026907
lt0.13083257090576395
lv0.12361623616236161
eu0.11545623836126628
hi0.10037878787878787
yo0.07317073170731707
fi0.06862745098039216
cs0.06588003933136675
sq0.06219151036525173
vi0.06219151036525173
reliabletrue
passestrue
9
name"Hunter"
dialogue"I'm not getting any of this. Is there— do you have someone who can translate? A friend, maybe?"
detectedLang"en"
heavyLang"en"
scores
en0.8327535456248327
tl0.5882740447957839
nl0.5304282494365139
de0.4734625105307498
pt0.45462478184991273
hr0.41148775894538603
it0.4075829383886255
yo0.4075829383886255
ca0.4024856596558317
cs0.3914313534566699
no0.3818001978239367
ro0.37374749498997994
sq0.35165975103734437
is0.34623430962343094
sk0.34210526315789475
pl0.3372216330858961
hu0.3315508021390375
tr0.3206521739130435
es0.3146929824561403
da0.31091510474090406
sl0.30089485458612975
vi0.30089485458612975
ms0.2541766109785203
az0.24789410348977134
sv0.24425634824667475
fr0.23965936739659366
lt0.1925064599483204
eu0.17979002624671916
lv0.17979002624671916
et0.16331994645247658
fi0.09156976744186046
reliabletrue
passestrue
10
name"Melanie"
dialogue"Bitte, Sie müssen mir glauben. Die Leute, die verschwunden sind— ich glaube, es hat etwas damit zu tun."
detectedLang"de"
heavyLang"de"
scores
de0.8326467559217302
nl0.468954248366013
hu0.3602362204724409
no0.34210526315789475
ca0.3200836820083682
da0.3172268907563025
tr0.3107104984093319
es0.30851063829787234
sv0.2864983534577387
pl0.2588369441277081
sq0.2502883506343714
et0.24681344148319811
yo0.236192714453584
tl0.22341696535244923
az0.21780986762936222
hr0.214975845410628
lt0.20537897310513448
it0.18444165621079048
sk0.16020671834625322
lv0.15584415584415584
ms0.11924119241192413
is0.09344490934449094
en0.08835904628330996
fr0.08835904628330996
pt0.08835904628330996
ro0.08321579689703808
reliabletrue
passestrue
11
name"Hunter"
dialogue"You know something about the missing people?"
detectedLang"en"
heavyLang"en"
scores
en0.8432601880877743
tl0.6138996138996139
ms0.469964664310954
nl0.46428571428571425
da0.41972920696324956
no0.3723849372384937
sv0.3670886075949367
is0.336283185840708
fr0.3333333333333333
pt0.3227990970654628
yo0.2628992628992629
cs0.20634920634920634
es0.20634920634920634
fi0.20634920634920634
sq0.20634920634920634
ca0.1935483870967742
de0.1935483870967742
az0.1780821917808219
et0.1780821917808219
it0.1780821917808219
reliabletrue
passestrue
12
name"Melanie"
dialogue"Ja! Ja, genau! Verschwunden! Sie verstehen mich?"
detectedLang"de"
heavyLang"de"
scores
de0.819435325016415
fi0.4670542635658915
sv0.461839530332681
nl0.4376278118609407
sq0.4376278118609407
da0.4246861924686192
pl0.41113490364025695
hu0.3902439024390244
ca0.3792325056433409
et0.358974358974359
no0.358974358974359
es0.34210526315789475
tr0.3055555555555556
eu0.2948717948717949
lv0.2948717948717949
sk0.233983286908078
sl0.22535211267605632
lt0.21875
yo0.21428571428571427
it0.207492795389049
is0.19590643274853803
en0.1863905325443787
fr0.1863905325443787
pt0.1863905325443787
az0.17664670658682635
ro0.17664670658682635
reliabletrue
passestrue
13
name"Hunter"
dialogue"Easy, easy. I caught one word. We need a translator. Don't go anywhere, alright? Stay right here."
detectedLang"en"
heavyLang"en"
scores
en0.8073056300268096
tl0.5634016704631739
pl0.5366639806607574
sq0.4801084990958409
hr0.4455159112825458
no0.4180161943319838
da0.4156504065040651
ro0.4041450777202072
et0.4010416666666667
yo0.3830472103004292
de0.38038793103448276
ca0.3777056277056277
nl0.3646408839779005
sv0.35825892857142855
it0.3451025056947608
cs0.33983926521239954
pt0.3282710280373832
fr0.3203309692671395
sk0.3154761904761905
hu0.27944862155388467
vi0.2776381909547738
lt0.26937738246505716
sl0.267515923566879
tr0.267515923566879
es0.26658163265306123
lv0.2580645161290322
az0.25032594524119944
ms0.2414248021108179
is0.1935483870967742
eu0.19241573033707865
be0.10852713178294573
fi0.0987460815047022
uk0.0987460815047022
reliabletrue
passestrue
14
name"Melanie"
dialogue"Ich weiß nicht, wie ich es Ihnen erklären soll..."
detectedLang"de"
heavyLang"de"
scores
de0.8452380952380952
nl0.4328097731239092
pl0.3725868725868726
ca0.3114406779661017
es0.3114406779661017
sk0.27616926503340755
lv0.2696629213483146
sv0.2696629213483146
hu0.2388758782201405
cs0.23529411764705882
lt0.21875
da0.1935483870967742
no0.1935483870967742
reliabletrue
passestrue
15
name"Hunter"
dialogue"Stay. Okay?"
detectedLang"en"
heavyLang"en"
scores
en0.6774193548387096
tl0.6774193548387096
reliablefalse
passestrue
16
name"Melanie"
dialogue"Warten Sie— wohin gehen Sie? Was ist passiert?"
detectedLang"de"
heavyLang"de"
scores
de0.8096446700507615
nl0.5726495726495726
no0.47643979057591623
en0.4360902255639098
pl0.4174757281553398
eu0.39879759519038077
it0.39879759519038077
ca0.37629937629937626
da0.3670886075949367
fi0.3644067796610169
sv0.3576017130620985
tr0.35344827586206895
ms0.3227990970654628
hi0.26108374384236455
pt0.25742574257425743
fr0.24623115577889448
yo0.2248062015503876
es0.1891891891891892
et0.1780821917808219
is0.1780821917808219
reliabletrue
passestrue
17
name"Hunter"
dialogue"I'll be back. Stay put."
detectedLang"en"
heavyLang"en"
scores
en0.8
hr0.5
hu0.4834710743801653
lt0.47257383966244726
yo0.46808510638297873
tl0.4444444444444444
reliabletrue
passestrue
18
name"Melanie"
dialogue"...Bitte kommen Sie zurück."
detectedLang"de"
heavyLang"de"
scores
de0.8407643312101911
da0.6492985971943889
no0.6399176954732511
et0.5614035087719298
sv0.5580808080808082
nl0.5014245014245015
pl0.3902439024390244
fi0.37722419928825623
hu0.3217054263565891
it0.3
reliabletrue
passestrue