Run: 2026-05-29-01KSSJEFX14MVN41GKMN64NFSR

Run Details

Model:
Claude Opus 4.8 (Reasoning)
Test:
Language Writing
Scenario:
Character dialogue (Italian) in a story
Duration:
19.4s
Cost:
$0.028885
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="Isabella"> Isabella is a 30-year old college student on a study abroad program. Born in Italy, she is fluent in Italian 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 Italian, 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: Isabella 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 Italian, and Hunter looks confused. They talk for a while, until Hunter gets a call and has to leave. Return the dialogue between Isabella and Hunter as a voice sheet: Isabella: "..." Hunter: "..."

Model response

AI
Isabella: *(scrolling through photos on her camera, murmuring to herself)* "...non è possibile. Cosa ho fotografato?" Hunter: "Excuse me, miss. Mind if I ask you a few questions? I'm Detective Hunter, looking into what happened by the old mill last night." Isabella: *(startled, looking up)* "Oh—mi scusi, non l'avevo vista. Lei è... un poliziotto?" Hunter: "I'll take that as a yes, you saw something. Were you down by the river around nine?" Isabella: "Io stavo solo facendo delle foto, lo giuro. Il tramonto era così bello, e poi... e poi ho visto qualcosa di terribile." Hunter: "Okay... I'm not following any of that. Do you speak English? English?" Isabella: *(shaking her head, growing visibly upset)* "No, no inglese. Per favore, deve capirmi. C'era una persona, e poi è semplicemente... sparita. Sparita nel nulla!" Hunter: "Whoa, easy now. You're shaking. Just—slow down." Isabella: *(turning the camera toward him with trembling hands)* "Guardi! Guardi questa foto. C'è qualcosa che non va, lo sento. Qualcosa di sbagliato in questa città." Hunter: *(leaning in, squinting at the screen)* "That's... huh. That's the mill. And that's—wait, who's that standing behind the—" Isabella: "Lo vede anche lei, vero? Non sono pazza. C'era qualcuno lì, e adesso non c'è più nessuno!" Hunter: "I need a copy of this photo. This. *(pointing firmly at the camera, then miming a copy)* You. Me. Station. Understand?" Isabella: *(frustrated, near tears)* "Non capisco cosa sta dicendo. Perché nessuno in questo posto parla italiano?" Hunter: *(sighing, rubbing his temples)* "Great. Of all the witnesses in this town, I get the one I can't talk to." *(Hunter's phone buzzes loudly. He answers.)* Hunter: "Hunter. ...What? Another one? When? ...No, don't touch anything, I'm on my way." Isabella: *(watching him anxiously)* "Cosa succede? È successo di nuovo, vero? Lo vedo dalla sua faccia." Hunter: *(standing, pocketing the phone)* "I have to go. Listen—stay here. *(holding up a palm)* Here. I'll find someone who speaks your language. Don't disappear on me." Isabella: "Aspetti—non se ne vada! Ho ancora così tante cose da dirle!" Hunter: *(already walking away, calling over his shoulder)* "I'll be back. Just... keep that camera safe." Isabella: *(quietly, clutching the camera to her chest)* "...Torni presto, detective. La prego."
created_at"2026-05-29T09:53:32.811Z" 5/29/2026, 9:53:32 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2902
moderation_latency(null)
generation_time19156
tokens_prompt321
tokens_completion693
native_tokens_prompt422
native_tokens_completion1071
native_tokens_completion_images(null)
native_tokens_reasoning61
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"
usage0.028885
router(null)
provider_responses
0
endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_01CzAaWJffNqCdXriDJCifbU"
is_byokfalse
latency1222
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-1780048412-zEpa1DSoY73xv0xyRLFR"
session_id(null)
api_type"completions"
id"gen-1780048412-4ALCo4NMPqijEW5Mhhdq"
upstream_id"msg_01CzAaWJffNqCdXriDJCifbU"
total_cost0.028885
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"Isabella"
dialogue"...non è possibile. Cosa ho fotografato?"
detectedLang"it"
heavyLang"it"
scores
it0.7820919175911252
ca0.6882086167800453
fr0.6054519368723099
en0.5985401459854015
pt0.5378151260504201
sk0.4670542635658915
cs0.46601941747572817
no0.4586614173228346
ro0.439918533604888
hr0.434156378600823
sl0.434156378600823
de0.42105263157894735
es0.42105263157894735
yo0.3341404358353511
sq0.32926829268292684
tr0.3193069306930693
lt0.314214463840399
et0.30730478589420657
lv0.30730478589420657
nl0.30730478589420657
pl0.30730478589420657
da0.3002544529262086
sv0.3002544529262086
eu0.2403314917127072
tl0.21428571428571427
az0.17664670658682635
ms0.17664670658682635
reliabletrue
passestrue
1
name"Hunter"
dialogue"Excuse me, miss. Mind if I ask you a few questions? I'm Detective Hunter, looking into what happened by the old mill last night."
detectedLang"en"
heavyLang"en"
scores
en0.8105216228265716
tl0.6268656716417911
fr0.5512143611404435
it0.4801223241590214
no0.4582536647546208
pt0.4537275064267352
nl0.4378306878306878
ca0.43521594684385384
da0.4197952218430034
sv0.40848990953375086
sq0.4072524407252441
ro0.38848920863309355
cs0.3786549707602339
es0.36472346786248133
de0.3161705551086082
yo0.3128536782538399
et0.3122977346278317
pl0.2910758965804838
sk0.28451178451178455
hr0.2722602739726028
hu0.2678725236864771
sl0.26343154246100525
ms0.2504409171075838
is0.19735599622285174
tr0.19507575757575757
lt0.1457286432160804
fi0.13967611336032387
az0.1353001017293998
lv0.1353001017293998
vi0.1353001017293998
be0.07608695652173912
eu0.07608695652173912
uk0.06900328587075576
reliabletrue
passestrue
2
name"Isabella"
dialogue"Oh—mi scusi, non l'avevo vista. Lei è... un poliziotto?"
detectedLang"it"
heavyLang"it"
scores
it0.7982786444324906
ca0.6215943491422806
ro0.5786516853932584
es0.5669745958429562
fr0.5669745958429562
lv0.5104438642297651
pt0.4762569832402235
yo0.4695898161244696
tl0.43267776096822996
eu0.4085173501577287
sl0.39999999999999997
sq0.39123376623376627
hr0.38825448613376834
cs0.3862520458265139
sk0.3811881188118812
hu0.38016528925619836
pl0.37913907284768217
nl0.36006825938566556
fi0.34554973821989526
en0.32432432432432434
no0.3131868131868132
da0.30167597765363136
sv0.29775280898876405
et0.28842504743833014
lt0.28023032629558536
tr0.2774566473988439
is0.2647058823529412
ms0.17943107221006563
de0.1758241758241758
az0.16666666666666666
reliabletrue
passestrue
3
name"Hunter"
dialogue"I'll take that as a yes, you saw something. Were you down by the river around nine?"
detectedLang"en"
heavyLang"en"
scores
en0.8299319727891157
tl0.6400287976961844
pt0.4675186368477103
ms0.452354874041621
yo0.43820224719101125
da0.4192799070847852
cs0.4054696789536267
ca0.375
es0.3630573248407643
fr0.34725848563968675
sk0.34725848563968675
no0.33862433862433866
hu0.3234100135317997
sq0.3234100135317997
sv0.3197278911564626
pl0.3084370677731674
it0.30167597765363136
sl0.251497005988024
nl0.23547400611620795
ro0.21752738654147105
de0.2163009404388715
hr0.1830065359477124
lt0.14089347079037798
tr0.1334488734835355
is0.13043478260869565
az0.12280701754385964
eu0.12280701754385964
lv0.12280701754385964
vi0.12280701754385964
et0.11190053285968028
fi0.11190053285968028
reliabletrue
passestrue
4
name"Isabella"
dialogue"Io stavo solo facendo delle foto, lo giuro. Il tramonto era così bello, e poi... e poi ho visto qualcosa di terribile."
detectedLang"it"
heavyLang"it"
scores
it0.8113854595336076
es0.6305418719211823
pt0.5506535947712418
ca0.5309835133598636
fr0.5059880239520957
no0.4391570360299116
de0.4214586255259467
ro0.4140625
sl0.39293598233995586
sk0.37547312641937924
fi0.3683001531393568
tl0.36046511627906974
en0.3462757527733756
da0.3441971383147853
cs0.3270799347471452
yo0.3170529801324503
hr0.2912371134020619
nl0.2838541666666667
et0.27055702917771884
ms0.26601423487544484
lv0.2486338797814208
pl0.2445054945054945
lt0.22752808988764048
az0.22607879924953095
tr0.22389463781749766
sq0.21052631578947367
hu0.19747081712062256
vi0.18558736426456074
is0.1441908713692946
sv0.13249211356466878
eu0.09638554216867469
reliabletrue
passestrue
5
name"Hunter"
dialogue"Okay... I'm not following any of that. Do you speak English? English?"
detectedLang"en"
heavyLang"en"
scores
en0.823860967590418
tl0.6684350132625994
cs0.36006825938566556
nl0.35233160621761656
hr0.33862433862433866
yo0.33745583038869253
no0.3194192377495462
pt0.2937853107344633
de0.29245283018867924
pl0.27606177606177607
ca0.2618110236220473
sk0.26035502958579887
sl0.24242424242424243
sq0.2378048780487805
vi0.22839506172839508
is0.19181034482758622
it0.17218543046357618
tr0.17218543046357618
da0.1610738255033557
ms0.1610738255033557
ro0.1610738255033557
sv0.1610738255033557
reliabletrue
passestrue
6
name"Isabella"
dialogue"No, no inglese. Per favore, deve capirmi. C'era una persona, e poi è semplicemente... sparita. Sparita nel nulla!"
detectedLang"it"
heavyLang"it"
scores
it0.8078060319337669
pt0.6266513497989662
es0.6196606202457579
ca0.615612063867534
ro0.5416078984485191
sq0.5160089352196575
en0.4957331264546159
fr0.4711147274206672
no0.45788156797331114
tl0.421193232413179
nl0.41441441441441446
sv0.4138863841298467
de0.364613880742913
yo0.36399217221135033
sk0.36336924583741426
da0.35707220573689413
et0.35323383084577115
lv0.3460764587525151
lt0.33469805527123847
hr0.3229166666666667
az0.3172268907563025
tr0.31650893796004204
ms0.3010752688172043
pl0.2494226327944573
sl0.24330616996507565
is0.24242424242424243
fi0.21307506053268765
eu0.20634920634920634
hu0.17721518987341772
cs0.16559691912708602
reliabletrue
passestrue
7
name"Hunter"
dialogue"Whoa, easy now. You're shaking. Just—slow down."
detectedLang"en"
heavyLang"en"
scores
en0.7868712702472294
tl0.4577006507592191
sv0.40898345153664306
et0.28977272727272724
nl0.28977272727272724
no0.25595238095238093
de0.24242424242424243
ca0.23547400611620795
fr0.22118380062305293
is0.22118380062305293
pt0.22118380062305293
reliabletrue
passestrue
8
name"Isabella"
dialogue"Guardi! Guardi questa foto. C'è qualcosa che non va, lo sento. Qualcosa di sbagliato in questa città."
detectedLang"it"
heavyLang"it"
scores
it0.8328267477203647
es0.5867768595041323
pt0.576271186440678
ca0.5528455284552846
en0.5149911816578483
fr0.5084897229669348
tl0.47817836812144215
ro0.4696239151398264
ms0.4670542635658915
yo0.3936052921719956
sl0.3574766355140187
de0.3483412322274882
sk0.3150684931506849
no0.29214929214929214
nl0.28478543563068925
hr0.2801047120418848
vi0.25474254742547425
sv0.2445054945054945
eu0.23717059639389734
fi0.23184357541899442
cs0.21763869132290184
az0.2109038737446198
pl0.2109038737446198
et0.19825072886297376
lv0.19590643274853803
lt0.15123456790123457
is0.12
da0.11290322580645161
tr0.10277324632952692
reliabletrue
passestrue
9
name"Hunter"
dialogue"That's... huh. That's the mill. And that's—wait, who's that standing behind the—"
detectedLang"en"
heavyLang"en"
scores
en0.7916666666666666
tl0.6352140077821011
nl0.473314606741573
no0.460431654676259
sq0.45014662756598234
da0.4444444444444444
ms0.3892508143322475
is0.37290969899665555
yo0.35456110154905335
sk0.2774566473988439
lt0.27606177606177607
eu0.2732558139534884
sv0.2732558139534884
fr0.267578125
az0.2618110236220473
pl0.1812227074235808
hr0.17943107221006563
cs0.16666666666666666
sl0.16666666666666666
de0.15730337078651685
et0.15730337078651685
it0.15730337078651685
tr0.1515837104072398
ro0.14383561643835618
reliabletrue
passestrue
10
name"Isabella"
dialogue"Lo vede anche lei, vero? Non sono pazza. C'era qualcuno lì, e adesso non c'è più nessuno!"
detectedLang"it"
heavyLang"it"
scores
it0.8285117804950789
pt0.5796783625730995
ro0.41025641025641024
fr0.39790575916230364
en0.30639324487334135
yo0.30387409200968524
de0.2962056303549572
es0.2721518987341772
ca0.2561448900388098
sq0.20689655172413793
vi0.13663663663663664
eu0.1314199395770393
pl0.1248097412480974
cs0.11944869831546708
hu0.11809815950920245
tr0.10852713178294573
is0.1043613707165109
lt0.1043613707165109
sl0.1043613707165109
az0.0987460815047022
da0.0987460815047022
et0.0987460815047022
fi0.0987460815047022
hr0.0987460815047022
lv0.0987460815047022
nl0.0987460815047022
no0.0987460815047022
sv0.0987460815047022
tl0.0987460815047022
reliabletrue
passestrue
11
name"Hunter"
dialogue"I need a copy of this photo. This. You. Me. Station. Understand?"
detectedLang"en"
heavyLang"en"
scores
en0.8136182902584495
no0.694873881204231
tl0.6750433275563258
da0.6505125815470643
fr0.6192893401015229
nl0.6173469387755102
sv0.612603305785124
cs0.5945945945945946
de0.5865490628445424
yo0.5588235294117647
it0.5300751879699248
sq0.5288944723618091
et0.5277078085642317
ro0.5033112582781457
pl0.497991967871486
sk0.4827586206896552
hr0.455732946298984
is0.44526627218934917
ca0.4221879815100154
sl0.39123376623376627
es0.3842364532019704
pt0.37810945273631835
hu0.37290969899665555
fi0.3697478991596639
lt0.3697478991596639
ms0.35456110154905335
tr0.35456110154905335
az0.34325744308231176
lv0.34325744308231176
vi0.2618110236220473
hi0.17035398230088497
zh0.17035398230088497
be0.15730337078651685
eu0.15730337078651685
uk0.14383561643835618
reliabletrue
passestrue
12
name"Isabella"
dialogue"Non capisco cosa sta dicendo. Perché nessuno in questo posto parla italiano?"
detectedLang"it"
heavyLang"it"
scores
it0.8141592920353983
es0.6846846846846848
pt0.6844951923076923
en0.571078431372549
tl0.5668316831683169
sl0.5628642797668609
fr0.5625
ro0.5278776978417267
ca0.5088868101028999
cs0.49078564500484967
hr0.44385593220338987
az0.4160177975528365
ms0.4081172491544532
lt0.40476190476190477
sk0.3979357798165138
sq0.39724454649827784
nl0.3937644341801385
de0.38739789964994165
pl0.36594202898550726
sv0.3510506798516687
tr0.3502475247524753
yo0.308300395256917
da0.2563739376770538
no0.2563739376770538
hu0.22106824925816024
et0.21875
fi0.18351477449455675
eu0.14215686274509806
is0.13509060955518945
lv0.10102739726027396
reliabletrue
passestrue
13
name"Hunter"
dialogue"Great. Of all the witnesses in this town, I get the one I can't talk to."
detectedLang"en"
heavyLang"en"
scores
en0.831017649267743
tl0.6720116618075801
yo0.5417515274949084
no0.5384615384615384
pl0.4897959183673469
it0.47735191637630664
sv0.46745562130177515
de0.4558645707376058
nl0.4485294117647059
hr0.4318181818181818
ro0.42455242966751916
da0.4163424124513619
sq0.3869209809264305
sl0.37931034482758624
is0.358974358974359
fr0.3571428571428572
cs0.3440233236151603
ca0.33035714285714285
sk0.3119266055045872
lv0.2913385826771654
lt0.2706645056726094
ms0.2537313432835821
et0.25124792013311154
az0.24623115577889448
pt0.17431192660550457
fi0.16201117318435754
be0.1346153846153846
tr0.1346153846153846
hu0.12959381044487428
uk0.12280701754385964
vi0.12280701754385964
reliabletrue
passestrue
14
name"Hunter"
dialogue"Hunter. ...What? Another one? When? ...No, don't touch anything, I'm on my way."
detectedLang"en"
heavyLang"en"
scores
en0.8258797653958945
tl0.5527306967984934
pl0.41574415744157445
ca0.3815104166666667
fr0.3815104166666667
hr0.3675099866844208
sk0.3466299862448418
es0.33286516853932585
pt0.2973372781065089
no0.2692307692307693
cs0.2531446540880503
da0.25196850393700787
sq0.250788643533123
et0.2448330683624801
fi0.24000000000000002
tr0.23633440514469453
it0.2313915857605178
ms0.2238562091503268
lv0.21617161716171615
de0.15630550621669628
hi0.15026833631484796
yo0.13636363636363635
sv0.12844036697247707
nl0.1171003717472119
ro0.11048689138576778
sl0.11048689138576778
reliabletrue
passestrue
15
name"Isabella"
dialogue"Cosa succede? È successo di nuovo, vero? Lo vedo dalla sua faccia."
detectedLang"it"
heavyLang"it"
scores
it0.8291800643086816
ca0.5545073375262054
pt0.5170454545454546
yo0.48918269230769235
es0.47073474470734744
sv0.33903576982892686
sq0.3167202572347267
vi0.30668841761827076
en0.3044189852700491
fr0.2975206611570248
ro0.2928452579034942
ms0.2784380305602716
da0.2685025817555938
fi0.23561151079136694
tl0.19962335216572505
sl0.19811320754716982
is0.17794970986460348
et0.16173570019723865
nl0.16173570019723865
tr0.1550695825049702
reliabletrue
passestrue
16
name"Hunter"
dialogue"I have to go. Listen—stay here. Here. I'll find someone who speaks your language. Don't disappear on me."
detectedLang"en"
heavyLang"en"
scores
en0.8006134969325154
da0.5353824160114368
tl0.4897959183673469
no0.4861660079051383
et0.448685326547922
pl0.4444444444444444
sq0.406392694063927
yo0.4031221303948576
hr0.39138576779026213
fi0.3885230479774224
fr0.38679245283018865
nl0.37619961612284064
cs0.365234375
ms0.34804413239719156
it0.3440968718466196
ro0.34343434343434337
sk0.34210526315789475
sv0.3179433368310598
de0.29577464788732394
lv0.2942453854505972
sl0.2919389978213508
es0.27211646136618145
ca0.26719278466741825
lt0.26136363636363635
pt0.2605233219567691
is0.2502883506343714
eu0.23076923076923078
hu0.18444165621079048
tr0.17407878017789072
hi0.11444141689373298
be0.09722222222222222
az0.08835904628330996
uk0.08835904628330996
vi0.08835904628330996
reliabletrue
passestrue
17
name"Isabella"
dialogue"Aspetti—non se ne vada! Ho ancora così tante cose da dirle!"
detectedLang"it"
heavyLang"it"
scores
it0.7980997624703088
pt0.5549738219895288
fr0.5435016111707841
es0.5345016429353779
ro0.5164960182025029
ca0.5052386495925495
sq0.47724477244772445
sl0.47400990099009904
hr0.4613434727503169
no0.4487678339818417
cs0.4325767690253671
fi0.39458689458689455
tr0.3902439024390244
de0.36661698956780925
eu0.33176100628930816
da0.29983525535420097
yo0.29983525535420097
en0.2784380305602716
tl0.2772108843537415
lt0.20708955223880596
sk0.20708955223880596
az0.19962335216572505
lv0.19507575757575757
sv0.16829745596868884
hu0.16173570019723865
ms0.15841584158415842
is0.1533864541832669
et0.15
pl0.1290983606557377
vi0.1290983606557377
reliabletrue
passestrue
18
name"Hunter"
dialogue"I'll be back. Just... keep that camera safe."
detectedLang"en"
heavyLang"en"
scores
en0.7945205479452054
tl0.5472837022132797
sv0.4498777506112469
ca0.44306930693069313
it0.412532637075718
ro0.412532637075718
hu0.34210526315789475
lt0.33234421364985167
yo0.3283582089552239
et0.3119266055045872
es0.3055555555555556
fr0.2524916943521595
nl0.2524916943521595
de0.24242424242424243
ms0.24242424242424243
reliabletrue
passestrue
19
name"Isabella"
dialogue"...Torni presto, detective. La prego."
detectedLang"it"
heavyLang"it"
scores
it0.7685185185185185
es0.742798353909465
ca0.7203579418344519
ro0.7005988023952096
tl0.6940024479804162
pt0.6855345911949685
fr0.6345029239766081
sl0.629080118694362
hr0.6177370030581039
en0.6111975116640747
no0.5598591549295775
sq0.4929006085192698
cs0.4577006507592191
sk0.414519906323185
nl0.3857493857493857
yo0.38271604938271603
da0.3765586034912718
de0.37027707808564225
sv0.37027707808564225
pl0.3333333333333333
lt0.2857142857142857
eu0.25595238095238093
vi0.251497005988024
et0.24698795180722888
ms0.23076923076923078
fi0.21875
lv0.20127795527156547
az0.19093851132686085
reliabletrue
passestrue