Run: 2026-03-06-01KK1H25KBFMB2YCHKFSWAYXVS

Run Details

Model:
GPT-5.4
Duration:
4.3s
Cost:
$0.002217
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
94.82% 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 hammered Blackthorn Manor as mourners gathered for Arthur Vale's wake. Candles guttered low, casting nervous shadows across ancestral portraits watching. No one mentioned the missing will, though everyone noticed absence. At precisely midnight, the grandfather clock shuddered, then abruptly stopped. A scream split silence upstairs, sharp as breaking crystal glass. They found Arthur's daughter sprawled beside the locked study door. Her fingers clutched a chess knight stained with fresh blood. Beneath the window, muddy footprints ended where the moonlight began. Inspector Greaves arrived smiling faintly, already suspecting everyone inside. Then the housekeeper whispered, "The murderer is still among us."
created_at"2026-03-06T12:13:22.932Z" 3/6/2026, 12:13:22 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency389
moderation_latency(null)
generation_time4216
tokens_prompt46
tokens_completion186
native_tokens_prompt41
native_tokens_completion141
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"
usage0.0022175
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0e87acbf2ad5ade30169aac4e30314819796e17c4919d2243c"
is_byokfalse
latency158
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-1772799202-KrhfoqJMGPPfknhMoWjS"
upstream_id"resp_0e87acbf2ad5ade30169aac4e30314819796e17c4919d2243c"
total_cost0.0022175
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
94.82% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
110
210
310
410
510
610
710
89
910