Run: 2026-03-18-01KM07ZYSR30C2VVZ9GXDEJ212

Run Details

Duration:
3.9s
Cost:
$0.000967
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 docks as Inspector Vale arrived, notebook ready, searching for answers in a silent warehouse tonight alone. Behind locked doors, dockworkers found Captain Merritt slumped beside crates, his revolver missing, his eyes fixed upward still cold there. The coroner said no struggle marks appeared, yet seawater smelled on the floorboards, oddly fresh for such late hours here. Vale interviewed Maris Crowe, Merritt’s accountant, who wore grief like perfume and insisted she’d left early yesterday at dawn quietly. A ledger page lay torn, and on its margin someone had sketched a compass rose, pointing west toward the icehouse. When Vale lifted the body’s coat, he noticed salt lines spelling initials: V.M., then stopped shivering at once in silence.
created_at"2026-03-18T10:31:20.645Z" 3/18/2026, 10:31:20 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3538
moderation_latency(null)
generation_time3606
tokens_prompt46
tokens_completion202
native_tokens_prompt41
native_tokens_completion767
native_tokens_completion_images0
native_tokens_reasoning599
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"
usage0.00096695
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_06885a3fca2860650169ba7ef8b2e4819784de145897c0cfb7"
is_byokfalse
latency178
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-1773829880-PxqmlExguqb16lQfFkz9"
upstream_id"resp_06885a3fca2860650169ba7ef8b2e4819784de145897c0cfb7"
total_cost0.00096695
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