Run: 2026-03-06-01KK1GQKJQ62AA5CX2S4MFP33H

Run Details

Duration:
5.0s
Cost:
$0.002278
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
97.41% 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 beneath weeping eaves. Lady Haversham smiled faintly, though her husband lay upstairs dead. Candles guttered wildly, casting tall shadows across ancestral portraits tonight. Inspector Vale arrived late, carrying mud, silence, and suspicion. No one noticed the missing violin until midnight chimed once. In the library, brandy breathed oak while secrets sharpened quietly. Then Mrs. Finch screamed, dropping a bloodstained cufflink beside embers. Every guest turned slowly, as though rehearsing innocence for years. Vale knelt carefully, seeing ash, perfume, and one golden hair. Outside, thunder applauded softly while someone locked the garden door.
created_at"2026-03-06T12:07:36.799Z" 3/6/2026, 12:07:36 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency434
moderation_latency(null)
generation_time4942
tokens_prompt46
tokens_completion183
native_tokens_prompt41
native_tokens_completion145
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"
usage0.0022775
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_08f43d36d123219c0169aac388dc4c8196a299cb6eaf151149"
is_byokfalse
latency154
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-1772798856-PiIZW2ngYyjIOzJlLdGx"
upstream_id"resp_08f43d36d123219c0169aac388dc4c8196a299cb6eaf151149"
total_cost0.0022775
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
97.41% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
39
410
510
610
710
810
910