Run: 2026-07-09-01KX419DFY9DP47S1K8P466VG8

Run Details

Duration:
13.6s
Cost:
$0.037105
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
100.00% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, Inspector Mara Venn arrived at Blackthorn Hall, where every window blazed except one above the locked library door. The butler waited beneath the dripping portico, clutching a silver candlestick and insisting nobody had entered since dinner ended abruptly. Inside, twelve guests stood silently around Lord Blackthorn, whose body lay facedown beside a chessboard missing only its white queen. A crimson thread circled his throat, while both hands remained folded neatly beneath him, as though arranged for solemn prayer. On the carpet, someone had written MARA in ash, using letters too precise to be accidental or hurried by anyone. Mara had never visited Blackthorn Hall before, yet the dead man's final accusation seemed unmistakably intended for her alone tonight. Then the dark window upstairs opened slowly, and a pale hand released something small and gleaming into the rain below. It struck the library glass with a bell's clear note, then landed at Mara's feet: the missing, bloodstained white queen.
created_at"2026-07-09T18:12:24.709Z" 7/9/2026, 6:12:24 PM
model"openai/gpt-5.6-sol-20260709"
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generation_time13434
tokens_prompt46
tokens_completion693
native_tokens_prompt41
native_tokens_completion1230
native_tokens_completion_images0
native_tokens_reasoning1022
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
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origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.037105
router(null)
provider_responses
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endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
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is_byokfalse
latency191
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
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request_id"req-1783620744-0S3x7XVLAfeSmgjjscsi"
session_id(null)
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api_type"completions"
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upstream_id"resp_031059f1114ff7ef016a4fe488c69c819385e67ea10852ba9c"
total_cost0.037105
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720