Run: 2026-03-18-01KM0AMAS59K7Z9NTC0J62PEYV

Run Details

Duration:
6.1s
Cost:
$0.000806
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain tapped the manor windows as the orchestra finished tuning. Detective Mara Voss arrived, coat dripping, to question the host. In the foyer, candles flickered beside a shattered grandfather clock. Sir Alden claimed the victim vanished during the final toast. Guests murmured, clutching programs printed with the late magistrate's seal. Then, beneath portraits, a scream rose and echoed silently tonight. Mara followed footsteps to the library, where silence waited patiently. The body lay sprawled, ink-stained fingers still gripping a key. A single rose rested near his chest, freshly broken stem. Mara noticed the clock's hands stopped exactly at midnight forever.
created_at"2026-03-18T11:17:25.426Z" 3/18/2026, 11:17:25 AM
model"openai/gpt-5.4-nano-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5856
moderation_latency(null)
generation_time6003
tokens_prompt46
tokens_completion433
native_tokens_prompt41
native_tokens_completion638
native_tokens_completion_images0
native_tokens_reasoning490
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"
usage0.0008057
router(null)
provider_responses
0
endpoint_id"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id"resp_09137f1dfa181a750169ba89c57d9c8195a0d785525989e5b6"
is_byokfalse
latency241
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-1773832645-Vt4AOHEtq1iGBddDVyeC"
upstream_id"resp_09137f1dfa181a750169ba89c57d9c8195a0d785525989e5b6"
total_cost0.0008057
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910