Run: 2026-03-18-01KM08WJD9N4NBWJ7N754FKWTK

Run Details

Duration:
5.7s
Cost:
$0.001261
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
The rain stitched black lines on Marlowe Pier as Detective Sloane arrived, coat dripping, at dawn's reluctant hush today alone. Harbor manager Wicks waved him toward the warehouse, where a locked door hid screams and salt-stained footprints since last night. Inside, glass cases lay smashed, and Elias Trent’s body slumped beside ledger books, throat neatly severed beneath a flickering worklamp. Sloane knelt, noticing a silver locket still warm, and a single white glove resting on bricks like invitation for questions. Wicks insisted Trent argued with the dockmaster, yet no one saw him leave that evening or return, despite posted guards. As Sloane photographed the scene, a distant siren synchronized with his thoughts: someone wanted secrecy here and knew watchman routes.
created_at"2026-03-18T10:46:58.231Z" 3/18/2026, 10:46:58 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4823
moderation_latency(null)
generation_time5571
tokens_prompt46
tokens_completion202
native_tokens_prompt41
native_tokens_completion1002
native_tokens_completion_images0
native_tokens_reasoning829
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"
usage0.0012607
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_056d6e7a89694dd70169ba82a24a2081908f462b70a39ed930"
is_byokfalse
latency214
model_permaslug"openai/gpt-5.4-nano-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-1773830818-bsnWo3I3YR7cvcsLzzVb"
upstream_id"resp_056d6e7a89694dd70169ba82a24a2081908f462b70a39ed930"
total_cost0.0012607
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520