Run: 2026-07-09-01KX400QCBYVEZ8AAMVRG4HFT1

Run Details

Duration:
13.1s
Cost:
$0.033175
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 dawn, the lighthouse bell rang thirteen times, though storms had severed its rusted rope three nights earlier without explanation. Inspector Mara Vale arrived by ferry, carrying one suitcase, two warrants, and a letter addressed in her own shaky handwriting. The islanders waited silently beside the pier, each wearing black gloves despite the bright and strangely warm October morning sunlight. Behind them, Gull House stood locked against the cliffs, its highest window glowing like an unblinking, watchful amber human eye. Inside, Sir Edmund Rook lay dead at breakfast, his silver spoon balanced carefully across his open, bloodless mouth like scales. No footprints marked the dusty floor, but seawater dripped steadily from the chandelier onto yesterday’s untouched newspaper below his chair. Mara opened the letter, and one sentence beneath her signature made every watching islander step backward together in sudden fear. “You have until sunset to prove which of us murdered him, because tonight the bell will name its next victim.”
created_at"2026-07-09T17:50:11.347Z" 7/9/2026, 5:50:11 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
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cancelledfalse
latency8269
moderation_latency(null)
generation_time12904
tokens_prompt46
tokens_completion397
native_tokens_prompt41
native_tokens_completion1099
native_tokens_completion_images0
native_tokens_reasoning897
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"completed"
service_tier"default"
usage0.033175
router(null)
provider_responses
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endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_0f986a17f6c224dd016a4fdf5369a481908643135ceb755ddb"
is_byokfalse
latency214
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619411-4GkJ4vTuYYszp5hNR2Iq"
session_id(null)
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api_type"completions"
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upstream_id"resp_0f986a17f6c224dd016a4fdf5369a481908643135ceb755ddb"
total_cost0.033175
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