Run: 2026-03-06-01KK1H30S6C9GQBE8KJYSM5E9K

Run Details

Duration:
3.8s
Cost:
$0.001618
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
70.49% 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 needled the manor windows as guests gathered beneath chandeliers, pretending warmth while portraits watched from walls darkened by age. At precisely midnight, the clock groaned twelve times, and Lady Wren collapsed beside the grand piano, pearls scattering everywhere. No one screamed at first; they only stared, hearing the final note still trembling beneath the storm's relentless drumming. Then Colonel Vale locked the doors himself, declaring the killer remained among them, smiling politely while hiding bloodied hands.
created_at"2026-03-06T12:13:50.765Z" 3/6/2026, 12:13:50 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency401
moderation_latency(null)
generation_time3741
tokens_prompt46
tokens_completion135
native_tokens_prompt41
native_tokens_completion101
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"
usage0.0016175
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_088723fa02a0c30a0169aac4fed6fc8194a924ad80ca320bef"
is_byokfalse
latency144
model_permaslug"openai/gpt-5.4-20260305"
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-1772799230-vnmsGhAQ1M6cCfbA8YTS"
upstream_id"resp_088723fa02a0c30a0169aac4fed6fc8194a924ad80ca320bef"
total_cost0.0016175
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
70.49% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
219
319