Run: 2026-06-01-01KT1HJM887STTBECANY47JPV4

Run Details

Model:
Claude Opus 4.8 (Reasoning, Low)
Test:
Language Writing
Scenario:
Character dialogue (German) in a story
Duration:
17.6s
Cost:
$0.029705
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 gerade noch hier..." Hunter: "Excuse me, miss? Mind if I ask you a few questions? Detective Hunter, Alborn PD." Melanie: *(looking up, startled)* "Oh—entschuldigen Sie, ich... ich habe Sie gar nicht kommen sehen." Hunter: "...I'll take that as a yes. You were down by the orchard yesterday afternoon. Around the time of the festival setup." Melanie: "Gestern? Ja, ja, ich war beim Apfelfest. Aber—warten Sie, ist etwas passiert? Sie sehen so ernst aus." Hunter: "Ma'am, I'm gonna be honest, I have no idea what you just said." Melanie: *(voice trembling, clutching her camera)* "Ich habe etwas gesehen. Auf meinen Fotos. Da war jemand zwischen den Bäumen, und dann... dann war diese Person einfach weg." Hunter: "Hey—hey, easy. You're shaking. Did something happen? You see something out there?" Melanie: "Ja! Genau das! Sehen Sie—" *(holding up the camera with unsteady hands)* "—hier, auf diesem Bild. Und auf dem nächsten ist er verschwunden. Einfach verschwunden!" Hunter: *(leaning in, frowning at the screen)* "That's... okay, that's actually something. There's a figure here, and then—" *(scrolling)* "—nothing. Where'd he go?" Melanie: "Das frage ich mich auch! Ich verstehe das nicht. Niemand kann doch so schnell—" Hunter: "Slow down, slow down. I can't follow you. Is there—do you have someone who speaks English? Anyone?" Melanie: *(shaking her head, frustrated, near tears)* "Englisch... nein, ich—ich kann kein Englisch. Bitte, Sie müssen mir glauben, da stimmt etwas nicht!" Hunter: "No English. Great. Of course." *(rubbing his temple)* "Look, just—stay here, alright? Don't delete those pictures. I need to—" *(Hunter's phone buzzes loudly. He answers.)* Hunter: "Hunter. ...What? Where? ...No, keep everyone back from the scene, I'm five minutes out." *(lowering the phone)* "I gotta go. Listen—" *(pointing firmly at the camera, then at the table)* "Stay. Pictures. Stay." Melanie: "Sie... Sie gehen? Aber—nein, warten Sie! Was soll ich denn jetzt machen?" Hunter: "I'll be back. Don't move." *(already standing, slipping a card onto the table)* "Stay put." Melanie: *(calling after him, holding up the card helplessly)* "Ich verstehe Sie doch gar nicht..."
created_at"2026-06-01T12:12:14.99Z" 6/1/2026, 12:12:14 PM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3484
moderation_latency(null)
generation_time17614
tokens_prompt319
tokens_completion670
native_tokens_prompt416
native_tokens_completion1105
native_tokens_completion_images(null)
native_tokens_reasoning56
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"
usage0.029705
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01VYd6W9AZk9oinznLGGVHz4"
is_byokfalse
latency1380
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-1780315934-slGPHsXyCUTVYkdXY3rl"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780315934-4OeMjs3K5tuDHDP7OcOu"
upstream_id"msg_01VYd6W9AZk9oinznLGGVHz4"
total_cost0.029705
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 gerade noch hier..."
detectedLang"de"
heavyLang"de"
scores
de0.8511099079588522
pt0.5491803278688524
nl0.5454545454545454
fr0.492619926199262
en0.42105263157894735
is0.3529411764705882
tl0.3357487922705314
sv0.2838541666666667
cs0.26666666666666666
eu0.25876010781671155
lt0.2506811989100818
ms0.22969187675070027
hr0.22535211267605632
no0.22096317280453256
et0.19590643274853803
it0.19590643274853803
ro0.19590643274853803
sk0.19590643274853803
sl0.19590643274853803
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss? Mind if I ask you a few questions? Detective Hunter, Alborn PD."
detectedLang"en"
heavyLang"en"
scores
en0.7688104245481294
it0.6199032480995161
fr0.5988329686360321
tl0.5686274509803921
ca0.5435684647302904
ro0.5378151260504201
pt0.5358649789029536
sq0.4791666666666667
es0.4701348747591522
no0.4575936883629191
sv0.4433198380566802
nl0.4204425711275026
cs0.4130202774813233
da0.4066882416396979
hr0.3663594470046083
hu0.3612078977932636
et0.359720605355064
sl0.3559718969555035
de0.302915082382763
pl0.29577464788732394
ms0.2724867724867725
tr0.2724867724867725
yo0.2724867724867725
sk0.26861702127659576
lt0.20863309352517986
fi0.2005813953488372
is0.2005813953488372
az0.19472913616398244
lv0.19472913616398244
vi0.19472913616398244
be0.11290322580645161
eu0.11290322580645161
uk0.10277324632952692
reliabletrue
passestrue
2
name"Melanie"
dialogue"Oh—entschuldigen Sie, ich... ich habe Sie gar nicht kommen sehen."
detectedLang"de"
heavyLang"de"
scores
de0.8310049571879224
nl0.6462264150943396
sv0.471830985915493
no0.4703389830508474
da0.39903846153846156
pl0.37707641196013286
fi0.3409490333919156
sk0.24849699398797598
eu0.23469387755102045
et0.22839506172839508
cs0.21052631578947367
hu0.1812227074235808
es0.16851441241685144
reliabletrue
passestrue
3
name"Hunter"
dialogue"...I'll take that as a yes. You were down by the orchard yesterday afternoon. Around the time of the festival setup."
detectedLang"en"
heavyLang"en"
scores
en0.7928994082840236
tl0.6655518394648829
no0.4938539407086045
nl0.49238578680203043
pt0.47839046199701935
da0.45987654320987653
cs0.4299674267100977
sk0.396551724137931
fr0.3907745865970409
yo0.3794326241134752
ms0.37163375224416517
hr0.36189608021877845
es0.35838680109990834
sq0.3451824134705332
sl0.33649289099526064
ca0.328214971209213
it0.3157380254154448
hu0.30417495029821073
de0.2964824120603015
pl0.29006085192697767
is0.2776057791537668
sv0.27007299270072993
ro0.26854754440961337
lt0.2290748898678414
az0.21171171171171171
et0.20903954802259886
lv0.15966386554621848
fi0.15254237288135594
tr0.0990990990990991
eu0.09090909090909091
vi0.09090909090909091
reliabletrue
passestrue
4
name"Melanie"
dialogue"Gestern? Ja, ja, ich war beim Apfelfest. Aber—warten Sie, ist etwas passiert? Sie sehen so ernst aus."
detectedLang"de"
heavyLang"de"
scores
de0.812986235786954
ca0.42075996292863765
no0.41259398496240596
pl0.3961352657004831
en0.39496611810261373
nl0.358974358974359
sv0.35233160621761656
da0.3469174503657262
fi0.34210526315789475
sk0.3343982960596379
it0.3131868131868132
sl0.26985981308411217
et0.259478672985782
yo0.2433414043583535
eu0.24150485436893204
pt0.2378048780487805
fr0.22166874221668745
tl0.20886075949367086
tr0.20785804816223066
es0.1935483870967742
is0.1883116883116883
ms0.18619791666666666
lv0.15540540540540537
hi0.14500683994528044
vi0.1367403314917127
sq0.10714285714285714
ro0.10201149425287356
reliabletrue
passestrue
5
name"Hunter"
dialogue"Ma'am, I'm gonna be honest, I have no idea what you just said."
detectedLang"en"
heavyLang"en"
scores
en0.773371104815864
et0.5428571428571428
ca0.5163240628778718
da0.47643979057591623
no0.4444444444444444
it0.41944847605224966
hr0.375
sv0.375
tl0.36808846761453395
es0.358974358974359
pl0.33444259567387685
yo0.32998324958123953
lv0.3265993265993266
hu0.3150684931506849
cs0.313893653516295
lt0.30434782608695654
sk0.2895204262877442
tr0.2831541218637993
eu0.2779783393501805
pt0.25650557620817843
sq0.250936329588015
fi0.22330097087378642
ro0.1836734693877551
ms0.16142557651991615
be0.14893617021276595
az0.13606911447084233
is0.13606911447084233
uk0.13606911447084233
vi0.13606911447084233
reliabletrue
passestrue
6
name"Melanie"
dialogue"Ich habe etwas gesehen. Auf meinen Fotos. Da war jemand zwischen den Bäumen, und dann... dann war diese Person einfach weg."
detectedLang"de"
heavyLang"de"
scores
de0.8298548094373865
nl0.5094833224329627
no0.45809248554913296
da0.4545454545454546
sv0.42660550458715596
eu0.3862520458265139
es0.3744787322768974
en0.3686868686868687
pt0.35177182368193605
it0.3093922651933701
is0.30683918669131244
pl0.2829827915869981
ro0.2753623188405797
ms0.26035502958579887
sk0.25
hr0.2454728370221328
fi0.24395161290322584
fr0.2416582406471183
tr0.24089068825910928
az0.2299794661190965
ca0.2299794661190965
cs0.22680412371134018
lt0.2227979274611399
sq0.21956295525494277
lv0.21793534932221062
tl0.21135646687697163
sl0.20212765957446807
yo0.17853231106243156
et0.13990825688073394
hu0.07749077490774908
vi0.07749077490774908
reliabletrue
passestrue
7
name"Hunter"
dialogue"Hey—hey, easy. You're shaking. Did something happen? You see something out there?"
detectedLang"en"
heavyLang"en"
scores
en0.8189177673625906
tl0.5783730158730159
de0.44948186528497414
nl0.32324840764331214
no0.30213464696223313
sv0.288107202680067
et0.2857142857142857
pt0.2595818815331011
hu0.18111753371868977
da0.17315175097276264
cs0.1550695825049702
es0.1550695825049702
ms0.1550695825049702
sq0.1550695825049702
fr0.1431451612903226
is0.1431451612903226
reliabletrue
passestrue
8
name"Melanie"
dialogue"—hier, auf diesem Bild. Und auf dem nächsten ist er verschwunden. Einfach verschwunden!"
detectedLang"de"
heavyLang"de"
scores
de0.8387096774193549
nl0.5609756097560975
no0.5417515274949084
da0.5375128468653648
sv0.5135135135135136
is0.44029850746268656
hu0.3626062322946175
tr0.32330827067669177
fr0.25124792013311154
es0.24114671163575044
sq0.23599320882852293
fi0.2173913043478261
eu0.20634920634920634
hi0.1906474820143885
lv0.16044776119402984
pl0.14772727272727273
sl0.14772727272727273
lt0.14611005692599618
it0.13793103448275862
en0.12280701754385964
pt0.12280701754385964
az0.11591355599214145
ca0.11591355599214145
ro0.11591355599214145
reliabletrue
passestrue
9
name"Hunter"
dialogue"—nothing. Where'd he go?"
detectedLang"en"
heavyLang"en"
scores
en0.8044328552803129
tl0.6212121212121212
yo0.5440729483282675
pl0.4186046511627907
ca0.3775933609958506
fi0.3775933609958506
es0.358974358974359
ms0.34210526315789475
reliabletrue
passestrue
10
name"Melanie"
dialogue"Das frage ich mich auch! Ich verstehe das nicht. Niemand kann doch so schnell—"
detectedLang"de"
heavyLang"de"
scores
de0.8372513562386981
nl0.5187165775401069
en0.43820224719101125
no0.40554821664464996
fr0.4015957446808511
da0.3553008595988539
sk0.3382352941176471
pt0.337260677466863
pl0.3333333333333333
ro0.31297709923664124
tl0.26108374384236455
sl0.25124792013311154
is0.24369747899159663
it0.24114671163575044
sv0.23339011925042585
yo0.21875
cs0.1818181818181818
vi0.18032786885245902
fi0.14611005692599618
lt0.14611005692599618
hu0.13793103448275862
hr0.1362763915547025
es0.12280701754385964
az0.11591355599214145
ca0.11591355599214145
sq0.11591355599214145
reliabletrue
passestrue
11
name"Hunter"
dialogue"Slow down, slow down. I can't follow you. Is there—do you have someone who speaks English? Anyone?"
detectedLang"en"
heavyLang"en"
scores
en0.8222365869424694
tl0.5004541326067212
da0.394273127753304
hr0.37570942111237227
sq0.3742889647326508
cs0.3648960739030023
yo0.3413173652694611
pl0.32844932844932845
de0.3125
pt0.298469387755102
no0.29214929214929214
hu0.28664072632944226
sv0.2763157894736842
sk0.27055702917771884
et0.26861702127659576
it0.2597577388963661
vi0.2403314917127072
ro0.22752808988764048
nl0.22425952045133993
is0.2198581560283688
ca0.2005813953488372
sl0.1791044776119403
es0.12420382165605094
ms0.11575562700964631
be0.11290322580645161
tr0.11290322580645161
az0.10277324632952692
lt0.10277324632952692
lv0.10277324632952692
uk0.10277324632952692
reliabletrue
passestrue
12
name"Melanie"
dialogue"Englisch... nein, ich—ich kann kein Englisch. Bitte, Sie müssen mir glauben, da stimmt etwas nicht!"
detectedLang"de"
heavyLang"de"
scores
de0.834983498349835
nl0.5192307692307693
no0.4404883011190234
da0.38271604938271603
hr0.34523809523809523
pl0.34523809523809523
it0.32182490752157833
az0.2930591259640103
ro0.28292046936114734
tr0.26174496644295303
sv0.23822714681440443
pt0.1863905325443787
eu0.18397626112759644
sk0.18397626112759644
sl0.18276374442793464
et0.17043740573152338
cs0.15384615384615385
en0.13793103448275862
is0.12420382165605094
yo0.12
ms0.11575562700964631
es0.10277324632952692
tl0.10277324632952692
vi0.10277324632952692
reliabletrue
passestrue
13
name"Hunter"
dialogue"Look, just—stay here, alright? Don't delete those pictures. I need to—"
detectedLang"en"
heavyLang"en"
scores
en0.8098859315589354
no0.554013875123885
et0.5145631067961165
da0.5033112582781457
ca0.5011086474501109
tl0.4803695150115473
sq0.4712103407755582
ro0.460431654676259
sv0.4571773220747889
fr0.45652173913043476
yo0.39839572192513373
lv0.3732590529247911
pl0.3670886075949367
hr0.3617021276595745
cs0.3440233236151603
sk0.3119266055045872
sl0.303405572755418
it0.2879746835443038
lt0.2706645056726094
hu0.25124792013311154
de0.24496644295302009
tr0.24369747899159663
nl0.23599320882852293
pt0.15094339622641512
be0.1346153846153846
es0.12959381044487428
az0.12280701754385964
is0.12280701754385964
uk0.12280701754385964
vi0.12280701754385964
reliabletrue
passestrue
14
name"Hunter"
dialogue"Stay. Pictures. Stay."
detectedLang"en"
heavyLang"en"
scores
en0.7907949790794979
fr0.6575342465753424
ca0.6296296296296297
ro0.6031746031746031
tl0.6031746031746031
et0.494949494949495
lv0.453551912568306
da0.4186046511627907
de0.4186046511627907
nl0.4186046511627907
no0.4186046511627907
sv0.4186046511627907
reliabletrue
passestrue
15
name"Melanie"
dialogue"Sie... Sie gehen? Aber—nein, warten Sie! Was soll ich denn jetzt machen?"
detectedLang"de"
heavyLang"de"
scores
de0.8428990364474236
nl0.5247148288973384
pl0.46808510638297873
en0.3842364532019704
eu0.3466898954703833
sv0.34210526315789475
fi0.31444241316270566
da0.3119266055045872
sk0.24849699398797598
no0.20212765957446807
yo0.1883116883116883
fr0.1830065359477124
ms0.17218543046357618
pt0.16666666666666666
tl0.16666666666666666
ca0.15730337078651685
es0.15730337078651685
tr0.15730337078651685
reliabletrue
passestrue
16
name"Hunter"
dialogue"Stay put."
detectedLang"en"
heavyLang"en"
scores
en0.8181818181818182
hr0.7142857142857143
reliablefalse
passestrue
17
name"Melanie"
dialogue"Ich verstehe Sie doch gar nicht..."
detectedLang"de"
heavyLang"de"
scores
de0.8483827493261455
nl0.5076586433260394
pl0.5022123893805309
sk0.3553008595988539
cs0.30769230769230765
lt0.2549668874172185
hu0.24242424242424243
it0.24242424242424243
is0.22945205479452058
en0.21875
es0.21875
fr0.21875
no0.21875
pt0.21875
az0.2077464788732394
ca0.2077464788732394
ro0.2077464788732394
sq0.2077464788732394
sv0.2077464788732394
reliabletrue
passestrue