Run: 2026-07-09-01KX41H1D1RKJPJH0JWV0KT5XX

Run Details

Duration:
4.3s
Cost:
$0.004015
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
Rain polished Blackthorn Manor's windows while Inspector Vale counted thirteen dinner guests and noticed fourteen place settings beneath the chandelier. At midnight, the lights failed, a woman screamed upstairs, and something heavy struck the library floor twice before silence returned. Vale lit a candle and found Lord Blackthorn dead beside an untouched drink, clutching a button carved from pale bone. Every guest arrived moments later, fully dressed, except young Clara, whose bare feet left no prints across the dusty hallway. Then the grandfather clock chimed thirteen, although its pendulum lay broken inside the locked cabinet, wrapped in yesterday's bloodstained newspaper.
created_at"2026-07-09T18:16:34.475Z" 7/9/2026, 6:16:34 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency660
moderation_latency(null)
generation_time4148
tokens_prompt46
tokens_completion178
native_tokens_prompt41
native_tokens_completion127
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.004015
router(null)
provider_responses
0
endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_09ebfa15fceb607b016a4fe58297b0819488e26f0dd3150ded"
is_byokfalse
latency258
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-1783620994-kuLC90d7qlHoNsTuxWbg"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620994-aCinKkJOcnLmkTVxYaRu"
upstream_id"resp_09ebfa15fceb607b016a4fe58297b0819488e26f0dd3150ded"
total_cost0.004015
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
sentences5
wordCounts
020
120
220
320
420