Run: 2026-03-18-01KM079VEF828DZ1M05QRBMBRH

Run Details

Duration:
1.3s
Cost:
$0.000679
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
92.13% 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 worried the manor windows as Eleanor arrived, clutching the summons that had promised answers and delivered only dread tonight. Inside, the chandeliers glowed weakly, illuminating portraits whose painted eyes followed her toward the library, where silence waited hungrily alone. Mr. Vale lay beside the fireplace, one hand outstretched toward a shattered decanter, his expression fixed in astonished accusation forever. Detective Mara Quinn knelt first, noting the blood, the overturned chessboard, and the locked door that denied any escape route. Then she saw Eleanor, pale and shaking, in the doorway, and asked quietly who had discovered the body here.
created_at"2026-03-18T10:19:16.314Z" 3/18/2026, 10:19:16 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency410
moderation_latency(null)
generation_time1216
tokens_prompt46
tokens_completion175
native_tokens_prompt41
native_tokens_completion144
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)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00067875
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_09fc071263cc36310169ba7c245fe48196ad6907d74fb684ee"
is_byokfalse
latency184
model_permaslug"openai/gpt-5.4-mini-20260317"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773829156-ZMuCbRTBwotS67r2QwFy"
upstream_id"resp_09fc071263cc36310169ba7c245fe48196ad6907d74fb684ee"
total_cost0.00067875
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
92.13% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
419