Run: 2026-03-06-01KK1HY0WVD2WFR0KE57ZC5FMT

Run Details

Duration:
2.9s
Cost:
$0.001228
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
95.58% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain battered Blackthorn Manor's windows. Guests whispered beneath crystal chandeliers. A violin sobbed somewhere upstairs. Lord Havers smiled through cigar smoke. Then darkness swallowed the ballroom. Someone screamed beside the grand staircase. When lights returned, Havers bled. A silver letter opener gleamed. No door had opened once. Everyone suddenly feared everyone else.
created_at"2026-03-06T12:28:35.62Z" 3/6/2026, 12:28:35 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency346
moderation_latency(null)
generation_time2806
tokens_prompt46
tokens_completion102
native_tokens_prompt41
native_tokens_completion75
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"
usage0.0012275
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_07966c2ddcef18470169aac873afe08194baed719d00db2234"
is_byokfalse
latency136
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-1772800115-ho5ICO1aC3BBwwzVbkly"
upstream_id"resp_07966c2ddcef18470169aac873afe08194baed719d00db2234"
total_cost0.0012275
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
95.58% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
36
45
56
65
75
85
95