Run: 2026-03-06-01KK1GFJE3K3KM962A7ZE19X78

Run Details

Duration:
3.9s
Cost:
$0.001992
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
68.52% 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 hammered Blackthorn Hall as mourners gathered, umbrellas dripping like broken wings beneath gargoyles that watched the funeral with stone patience. Inside, candles guttered along the corridor, casting trembling halos over portraits whose lacquered eyes seemed unwilling to forgive anyone. When the clock struck midnight, Evelyn Harrow opened her father's study door and found his body arranged behind the desk. A chess king rested in his palm, crimson smeared across the ivory, while the window stood open to stormwinds. No one heard her scream above the thunder, yet every guest arrived breathless moments later, each carrying silence suspiciously.
created_at"2026-03-06T12:03:13.482Z" 3/6/2026, 12:03:13 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency480
moderation_latency(null)
generation_time3826
tokens_prompt46
tokens_completion167
native_tokens_prompt41
native_tokens_completion126
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"
usage0.0019925
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_09119a531b079bde0169aac28187ec8196a5f586aa7694a776"
is_byokfalse
latency146
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-1772798593-9y4p6c7ynXm10ik87fuz"
upstream_id"resp_09119a531b079bde0169aac28187ec8196a5f586aa7694a776"
total_cost0.0019925
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
68.52% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
021
119
220
319
419