Run: 2026-03-18-01KM091DMTJHK3YAGFYJ3WCK7J

Run Details

Duration:
1.4s
Cost:
$0.000199
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
92.22% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain tapped windows as Detective Hale entered Harbor Street quietly. A lone body lay in Marlowe Alley, face-down beneath lanternlight. No witnesses spoke; the night clerk stared, shaking nervously nearby. Captain Rusk demanded answers, pacing like a restless storm overhead. Hale noticed a torn glove, glittering with ash and salt. Inside it, a pocketknife held silver scratches shaped deliberately. The victim's coat smelled faintly of lilacs and kerosene tonight. Nearby, a music box choked, then stopped without explanation. Hale knelt, counting footprints, each pair matching vanished boot sizes. Rusk whispered, "Someone wanted him dead, and watched us arrive."
created_at"2026-03-18T10:49:37.189Z" 3/18/2026, 10:49:37 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency539
moderation_latency(null)
generation_time989
tokens_prompt46
tokens_completion179
native_tokens_prompt41
native_tokens_completion153
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"
usage0.00019945
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_014b59aeed0722840169ba834143b08195a03af9838967e9d7"
is_byokfalse
latency269
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-1773830977-14AXqxJZ7m8cI5n4czbx"
upstream_id"resp_014b59aeed0722840169ba834143b08195a03af9838967e9d7"
total_cost0.00019945
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
92.22% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
110
210
310
410
59
610
79
810
910