Run: 2026-03-18-01KM08CWC36XD8KQKZ9H2SG6JJ

Run Details

Duration:
10.1s
Cost:
$0.003442
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 stitched the harbor into silver threads, and Inspector Vale arrived just as the lighthouse bell began its mournful toll. At the end of the pier, a body lay beside the mooring posts, one hand clutching a torn invitation card. The guests clustered under black umbrellas, each pretending surprise while silently measuring who among them had motive enough tonight perhaps. Vale knelt, lifted the victim's wrist, and found a watch stopped at eleven seventeen, though the tide was rising fast. When he stood, the widow was smiling, and in her gloved fingers rested the missing knife, still wet with rain.
created_at"2026-03-18T10:38:24.146Z" 3/18/2026, 10:38:24 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9701
moderation_latency(null)
generation_time9897
tokens_prompt46
tokens_completion629
native_tokens_prompt41
native_tokens_completion758
native_tokens_completion_images0
native_tokens_reasoning627
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"
usage0.00344175
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0dbf785e542a9baa0169ba80a0387881968af4acbbc7de6aea"
is_byokfalse
latency215
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-1773830304-4tdt2motGQVvjzDFFATp"
upstream_id"resp_0dbf785e542a9baa0169ba80a0387881968af4acbbc7de6aea"
total_cost0.00344175
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420