Run: 2026-05-31-01KSYXG1P0YF16RB95TCHF3DVS

Run Details

Model:
Claude Opus 4.8 (Reasoning, High)
Test:
Language Writing
Scenario:
Character dialogue (Spanish) in a story
Duration:
17.3s
Cost:
$0.026400
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="Maria"> Maria is a 30-year old college student on a study abroad program. Born in Spain, she is fluent in Spanish 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 Spanish, 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: Maria 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 Spanish, and Hunter looks confused. They talk for a while, until Hunter gets a call and has to leave. Return the dialogue between Maria and Hunter as a voice sheet: Maria: "..." Hunter: "..."

Model response

AI
Maria: *(scrolling through her camera, muttering to herself)* "No puede ser… ¿qué es esto que salió en la foto?" Hunter: "Excuse me, miss. Mind if I sit? I'm Detective Hunter, Alborn PD. I'd like to ask you a few questions about last night." Maria: *(looking up, startled)* "¿Anoche? Dios mío… sí, vi algo, ¡vi algo terrible cerca del río!" Hunter: "Okay… I caught 'río' and 'terrible.' You speak any English at all?" Maria: *(shaking her head, gesturing emphatically with the camera)* "No, no inglés, lo siento. Pero mire, ¡mire esta foto! Había una persona, y luego… ¡desapareció!" Hunter: "Whoa, slow down. You're showing me a photo. Is that—what is that? Is that a person by the water?" Maria: *(nodding rapidly, voice trembling)* "¡Sí! Estaba sacando fotos del atardecer, y de repente esta figura… y esta mañana, en las noticias, otra persona perdida. Tengo miedo." Hunter: "Hey, hey, it's alright. You're shaking. I wish I understood you. 'Foto,' 'persona,'—you saw someone? At the river?" Maria: *(pointing at the photograph, then toward the window)* "El río, sí. Allá. Tiene que ver esto, por favor. Creo que es importante para su… investigación." Hunter: "The river. You keep pointing at this picture. Listen, I'm gonna get someone who speaks Spanish down here, okay? This might actually be—" *(Hunter's phone rings.)* Hunter: "Hold that thought. Hunter. …What? Where? …No, I'm on my way. Don't let anyone touch it." Maria: *(anxiously)* "¿Qué pasa? ¿Se va? ¡Espere, la foto!" Hunter: *(standing, grabbing his coat)* "I gotta go. Something's happened. Look—don't delete that. Don't delete anything, you understand? The photo. Keep it." Maria: "No entiendo… ¿adónde va?" Hunter: *(pointing firmly at the camera, then at her)* "Photo. You. Stay. I'll come back. Stay here." Maria: *(clutching the camera to her chest)* "Está bien… aquí estaré. Pero por favor, vuelva pronto." Hunter: "I'll be back. I promise." *(He hurries out the door.)* Maria: *(softly, to herself, staring at the screen)* "¿Qué fue lo que fotografié…?"
created_at"2026-05-31T11:42:50.061Z" 5/31/2026, 11:42:50 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3060
moderation_latency(null)
generation_time17266
tokens_prompt317
tokens_completion633
native_tokens_prompt420
native_tokens_completion972
native_tokens_completion_images(null)
native_tokens_reasoning58
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"
usage0.0264
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_017pMwayJT4AjEpqrLqE7HzT"
is_byokfalse
latency1517
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-1780227770-nlgWEWeMjHN4NMvPF6g5"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1780227770-XYEIjj44YZp3pMhAhb48"
upstream_id"msg_017pMwayJT4AjEpqrLqE7HzT"
total_cost0.0264
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"Maria"
dialogue"No puede ser… ¿qué es esto que salió en la foto?"
detectedLang"es"
heavyLang"es"
scores
es0.8434489402697495
ca0.748062015503876
pt0.6368715083798884
no0.6046228710462287
fr0.5865139949109415
it0.536376604850214
da0.49376947040498437
lv0.49139280125195617
tl0.4328097731239092
sv0.4318181818181818
hu0.4196428571428571
ro0.4058500914076782
nl0.3992606284658041
de0.3879472693032015
tr0.37858508604206503
sk0.3380855397148676
hr0.3298969072164949
fi0.3285123966942149
sl0.3186582809224318
pl0.29805615550755943
is0.2919389978213508
en0.24242424242424243
yo0.22062350119904073
lt0.21875
vi0.20537897310513448
sq0.1935483870967742
eu0.1875
ms0.1875
cs0.15364583333333331
et0.15364583333333331
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss. Mind if I sit? I'm Detective Hunter, Alborn PD. I'd like to ask you a few questions about last night."
detectedLang"en"
heavyLang"en"
scores
en0.783842204809511
tl0.5791688584955287
it0.5285798467884502
fr0.528023598820059
no0.5215311004784688
da0.4612794612794613
ca0.45017182130584193
ro0.4444444444444444
pt0.4425087108013937
cs0.3930197268588771
sq0.3874425727411945
es0.37888198757763975
nl0.3730407523510972
sv0.35379644588045234
hr0.35170178282009723
sl0.3469387755102041
yo0.34264585045193097
et0.3254637436762226
pl0.313893653516295
sk0.2945326278659612
de0.2812219227313567
hu0.27992799279927993
lv0.24170616113744076
lt0.23736892278360344
ms0.2047713717693837
tr0.2047713717693837
fi0.14712153518123666
is0.14712153518123666
az0.14255091103965703
vi0.14255091103965703
be0.08045977011494253
eu0.08045977011494253
uk0.07300115874855156
reliabletrue
passestrue
2
name"Maria"
dialogue"¿Anoche? Dios mío… sí, vi algo, ¡vi algo terrible cerca del río!"
detectedLang"es"
heavyLang"es"
scores
es0.7491039426523297
ca0.6276595744680852
it0.6268656716417911
pt0.5192307692307693
da0.4664634146341463
sv0.4640122511485452
no0.453125
fr0.43910256410256415
en0.3346007604562738
ro0.32432432432432434
de0.3
yo0.29718875502008035
vi0.2222222222222222
sl0.21875
tl0.1784037558685446
sq0.16666666666666666
nl0.1606714628297362
az0.15254237288135594
et0.15254237288135594
hu0.15254237288135594
fi0.14425427872860636
pl0.14425427872860636
reliabletrue
passestrue
3
name"Hunter"
dialogue"Okay… I caught 'río' and 'terrible.' You speak any English at all?"
detectedLang"en"
heavyLang"en"
scores
en0.7808085728202631
tl0.6391339214113874
ca0.5161290322580645
no0.5071193866374589
da0.4617224880382775
sv0.38524590163934425
hr0.31921331316187596
es0.3171471927162367
sq0.31402439024390244
it0.293563579277865
yo0.29245283018867924
cs0.2890995260663507
ro0.2647058823529412
et0.25124792013311154
de0.24242424242424243
pl0.21875
fr0.1906474820143885
ms0.13793103448275862
sk0.13793103448275862
be0.1346153846153846
tr0.1346153846153846
hu0.12959381044487428
az0.12280701754385964
is0.12280701754385964
lt0.12280701754385964
lv0.12280701754385964
uk0.12280701754385964
vi0.12280701754385964
reliabletrue
passestrue
4
name"Maria"
dialogue"No, no inglés, lo siento. Pero mire, ¡mire esta foto! Había una persona, y luego… ¡desapareció!"
detectedLang"es"
heavyLang"es"
scores
es0.8204374795951681
pt0.6352785145888594
ca0.6340652029274785
it0.5934959349593496
tl0.4821092278719397
sk0.4294605809128631
lv0.38478747203579416
pl0.3544600938967136
lt0.33894230769230765
fr0.3349455864570738
hu0.3251533742331288
en0.3193069306930693
no0.3184634448574969
sq0.3184634448574969
ro0.30730478589420657
tr0.2966751918158568
hr0.28478543563068925
cs0.27821522309711283
et0.26174496644295303
vi0.2557510148849797
eu0.24965893587994542
ms0.23076923076923078
da0.2109038737446198
de0.2005813953488372
nl0.2005813953488372
yo0.19941775836972345
sv0.13657770800627944
sl0.12280701754385964
is0.10277324632952692
az0.09688013136288999
reliabletrue
passestrue
5
name"Hunter"
dialogue"Whoa, slow down. You're showing me a photo. Is that—what is that? Is that a person by the water?"
detectedLang"en"
heavyLang"en"
scores
en0.8122418325197146
tl0.6334310850439883
nl0.5996797437950361
fr0.5579133510167993
no0.5024875621890548
da0.4887525562372188
sq0.47145877378435525
pt0.46638207043756674
cs0.45054945054945056
sv0.44071588366890374
hu0.427262313860252
yo0.40898345153664306
sk0.3939393939393939
es0.39172749391727496
ms0.3849938499384994
is0.3757802746566792
de0.36948297604035313
it0.36948297604035313
pl0.36061381074168797
ca0.3112947658402204
ro0.3084370677731674
et0.302649930264993
sl0.2625368731563422
hr0.25484351713859915
lt0.23547400611620795
lv0.2248062015503876
tr0.22360248447204967
fi0.2163009404388715
az0.20508744038155804
hi0.1334488734835355
eu0.12280701754385964
vi0.12280701754385964
reliabletrue
passestrue
6
name"Maria"
dialogue"¡Sí! Estaba sacando fotos del atardecer, y de repente esta figura… y esta mañana, en las noticias, otra persona perdida. Tengo miedo."
detectedLang"es"
heavyLang"es"
scores
es0.8120300751879699
pt0.67692892436336
ca0.63998305802626
it0.5849609375
fr0.5298672566371682
ro0.45125887669464165
da0.4337108594270486
no0.43067649028801075
en0.426063470627954
nl0.4166094715168154
sq0.40848990953375086
eu0.3876080691642651
sv0.37454010301692425
lv0.37176644493717664
tl0.3623405851462866
de0.3322859387274156
ms0.2946058091286307
tr0.28870292887029286
is0.26534140017286084
lt0.25893635571054924
sk0.24242424242424243
yo0.2216117216117216
sl0.22018348623853207
hu0.21803127874885006
pl0.20782851817334574
az0.17555771096023276
cs0.1290983606557377
hr0.1290983606557377
et0.12551440329218108
vi0.10337552742616034
fi0.08993576017130622
reliabletrue
passestrue
7
name"Hunter"
dialogue"Hey, hey, it's alright. You're shaking. I wish I understood you. 'Foto,' 'persona,'—you saw someone? At the river?"
detectedLang"en"
heavyLang"en"
scores
en0.7670250896057348
tl0.59727385377943
da0.5790155440414508
no0.5675316034597472
sv0.4766505636070853
ca0.37679769894535
nl0.36274509803921573
yo0.34541792547834843
de0.3298969072164949
fr0.3114406779661017
it0.30851063829787234
sq0.3062966915688367
cs0.2911668484187568
lv0.281767955801105
es0.26719278466741825
pt0.2605233219567691
pl0.2388758782201405
ms0.214975845410628
sk0.19852034525277434
hr0.1761723700887199
is0.1709183673469388
eu0.12280701754385964
ro0.12162162162162163
be0.09722222222222222
tr0.09722222222222222
hu0.09344490934449094
az0.08835904628330996
et0.08835904628330996
lt0.08835904628330996
uk0.08835904628330996
vi0.08835904628330996
reliabletrue
passestrue
8
name"Maria"
dialogue"El río, sí. Allá. Tiene que ver esto, por favor. Creo que es importante para su… investigación."
detectedLang"es"
heavyLang"es"
scores
es0.8305773922472215
ca0.6739697443922795
pt0.6565934065934066
it0.575118966689327
fr0.5595489781536293
ro0.5297215951843491
sq0.4813278008298755
tl0.4644387317909169
no0.39496611810261373
en0.39437984496124034
nl0.3648373983739837
lt0.3615934627170583
de0.35831622176591377
hu0.35699588477366256
sk0.33932346723044393
hr0.3154435925520263
da0.29218573046432617
sv0.2889647326507395
tr0.28815489749430523
az0.2433414043583535
sl0.23406862745098037
lv0.2331288343558282
ms0.20178799489144317
yo0.19146183699870634
fi0.17763157894736845
cs0.17218543046357618
et0.1710875331564987
is0.09156976744186046
reliabletrue
passestrue
9
name"Hunter"
dialogue"The river. You keep pointing at this picture. Listen, I'm gonna get someone who speaks Spanish down here, okay? This might actually be—"
detectedLang"en"
heavyLang"en"
scores
en0.8056698673982625
tl0.6445002091175241
da0.47563232572486125
no0.47073474470734744
fr0.410949410949411
de0.40056417489421725
sv0.36896807720861174
it0.35752078609221466
ro0.3501529051987768
nl0.3491577335375191
yo0.3395493395493396
sq0.3156199677938808
pt0.30384930384930386
es0.27163667523564694
fi0.26279271465741544
ca0.24444444444444446
hu0.23971377459749554
et0.23354373309287646
is0.22374429223744294
hr0.21150278293135436
lt0.18893129770992365
ms0.16584887144259078
pl0.15758176412289396
cs0.14228052472250252
sl0.14054600606673406
eu0.12099276111685627
lv0.09188034188034187
tr0.07306434023991276
sk0.06490649064906491
reliabletrue
passestrue
10
name"Hunter"
dialogue"Hold that thought. Hunter. …What? Where? …No, I'm on my way. Don't let anyone touch it."
detectedLang"en"
heavyLang"en"
scores
en0.8275862068965517
tl0.5229835212489159
ca0.3475682087781732
fr0.3475682087781732
cs0.33171324422843257
da0.33008526187576126
sk0.314214463840399
pl0.31335830212234705
sq0.28848641655886154
lv0.28292046936114734
pt0.26764314247669774
hr0.2557510148849797
no0.2413793103448276
de0.23184357541899442
sl0.22969187675070027
et0.21875
yo0.21540656205420827
fi0.21428571428571427
tr0.2109038737446198
it0.20634920634920634
es0.19941775836972345
hi0.13249211356466878
sv0.11290322580645161
nl0.10277324632952692
ms0.09688013136288999
ro0.09688013136288999
reliabletrue
passestrue
11
name"Maria"
dialogue"¿Qué pasa? ¿Se va? ¡Espere, la foto!"
detectedLang"es"
heavyLang"es"
scores
es0.8033431661750245
ca0.7468354430379747
it0.7452229299363057
ro0.7357992073976222
fr0.6545768566493955
no0.6101364522417154
pt0.5926680244399185
yo0.5893223819301848
eu0.5283018867924528
sl0.511002444987775
cs0.4936708860759494
hr0.4897959183673469
sq0.48717948717948717
da0.44751381215469616
tl0.43820224719101125
fi0.33774834437086093
sv0.3006993006993007
vi0.29577464788732394
en0.2907801418439716
sk0.2727272727272727
de0.23954372623574144
lv0.23954372623574144
nl0.23954372623574144
pl0.23954372623574144
et0.2277992277992278
reliabletrue
passestrue
12
name"Hunter"
dialogue"I gotta go. Something's happened. Look—don't delete that. Don't delete anything, you understand? The photo. Keep it."
detectedLang"en"
heavyLang"en"
scores
en0.7972027972027972
tl0.5399746192893401
no0.4897959183673469
da0.44656488549618323
sv0.44058641975308643
sq0.3907563025210084
it0.3438914027149321
cs0.3287037037037037
yo0.32369402985074625
nl0.31214421252371916
pl0.3008678881388621
ro0.2967992240543162
fr0.26988922457200404
hu0.26321138211382117
ca0.2204301075268817
de0.210239651416122
sk0.18171557562076748
pt0.17893544733861835
ms0.17707150964812712
lv0.17048054919908467
es0.16666666666666666
tr0.16666666666666666
hr0.16087962962962962
et0.15990730011587484
is0.15893271461716937
fi0.13381123058542413
hi0.09600997506234414
sl0.09375000000000001
be0.0880503144654088
az0.0799492385786802
lt0.0799492385786802
uk0.0799492385786802
vi0.0799492385786802
reliabletrue
passestrue
13
name"Maria"
dialogue"No entiendo… ¿adónde va?"
detectedLang"es"
heavyLang"es"
scores
es0.7899159663865546
ca0.6812386156648452
pt0.6647509578544061
it0.6268656716417911
fr0.6022727272727273
en0.527027027027027
ro0.43910256410256415
hu0.4281045751633987
lv0.4281045751633987
hr0.36594202898550726
no0.3566176470588235
fi0.34210526315789475
sk0.34210526315789475
tr0.3346007604562738
tl0.3137254901960784
et0.3055555555555556
nl0.3055555555555556
pl0.3
reliabletrue
passestrue
14
name"Hunter"
dialogue"Photo. You. Stay. I'll come back. Stay here."
detectedLang"en"
heavyLang"en"
scores
en0.7983870967741935
tl0.5604395604395604
fr0.48717948717948717
cs0.453551912568306
it0.44751381215469616
sq0.3333333333333333
hi0.2779783393501805
reliabletrue
passestrue
15
name"Maria"
dialogue"Está bien… aquí estaré. Pero por favor, vuelva pronto."
detectedLang"es"
heavyLang"es"
scores
es0.8098377281947262
ca0.6992782678428229
pt0.6941272430668842
fr0.506578947368421
sq0.4230769230769231
it0.410377358490566
cs0.3862520458265139
en0.3042671614100185
tl0.30167597765363136
sk0.28977272727272724
no0.27606177606177607
eu0.23155737704918034
hr0.18655097613882862
de0.16851441241685144
ro0.1610738255033557
et0.1591928251121076
da0.14772727272727273
nl0.14772727272727273
sl0.14772727272727273
sv0.14772727272727273
reliabletrue
passestrue
16
name"Hunter"
dialogue"I'll be back. I promise."
detectedLang"en"
heavyLang"en"
scores
en0.7771173848439822
cs0.6296296296296297
tl0.6134020618556701
ro0.6124031007751938
hr0.5967741935483871
ca0.5774647887323944
et0.5677233429394812
yo0.5677233429394812
sq0.5626822157434402
pl0.5575221238938053
hu0.5508982035928144
it0.5481927710843374
lt0.5384615384615384
no0.4915254237288135
da0.4809688581314879
sv0.4791666666666667
pt0.3333333333333333
sk0.32432432432432434
be0.3181818181818182
es0.3181818181818182
sl0.3181818181818182
tr0.3181818181818182
fr0.3087557603686636
az0.29577464788732394
is0.29577464788732394
lv0.29577464788732394
uk0.29577464788732394
vi0.29577464788732394
de0.2822966507177033
ms0.2822966507177033
nl0.2822966507177033
reliabletrue
passestrue
17
name"Maria"
dialogue"¿Qué fue lo que fotografié…?"
detectedLang"es"
heavyLang"es"
scores
es0.788135593220339
ca0.6615905245346869
pt0.6539792387543253
fr0.6101364522417154
it0.5565410199556541
hr0.4065281899109792
sl0.4065281899109792
yo0.4065281899109792
sq0.40298507462686567
cs0.40119760479041916
sk0.3939393939393939
tr0.39209726443769
de0.38650306748466257
lt0.38650306748466257
et0.37888198757763975
lv0.37888198757763975
nl0.37888198757763975
no0.37888198757763975
pl0.37888198757763975
ro0.37888198757763975
da0.3710691823899371
sv0.3710691823899371
vi0.3127147766323024
az0.2277992277992278
en0.2277992277992278
ms0.2277992277992278
reliabletrue
passestrue