Run: 2026-03-06-01KK1H84GSC5C672NZY43RSW0Z

Run Details

Duration:
3.2s
Cost:
$0.001618
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
68.55% 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 mansion windows as guests gathered silently, their reflections wavering like ghosts across the polished black marble floor. At precisely midnight, the chandelier flickered once, and the host collapsed forward, crimson blooming through his immaculate dinner jacket. No one screamed immediately; shock held every throat shut while thunder rolled above, as though heaven itself had witnessed murder. Inspector Vale arrived moments later, removing wet gloves carefully, already noting alibis dissolving faster than raindrops on candles.
created_at"2026-03-06T12:16:38.436Z" 3/6/2026, 12:16:38 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency464
moderation_latency(null)
generation_time3107
tokens_prompt46
tokens_completion140
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_0e443a097e4236710169aac5a68224819395806875aeeceffb"
is_byokfalse
latency173
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-1772799398-Q1aCqu1DxTMQDF4GRBuC"
upstream_id"resp_0e443a097e4236710169aac5a68224819395806875aeeceffb"
total_cost0.0016175
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
68.55% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
220
318