Run: 2026-03-18-01KM07CA0QDJ515S9A4SP84EKA

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
11.3s
Cost:
$0.004166
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
100.00% 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 stitched silver lines across the manor windows at midnight. Inside, the guests laughed too loudly, as if rehearsing innocence. Detective Mara Vale found the body before anyone called her. The victim's smile remained, but his throat had been opened. Mara noticed the clock stopped exactly at thirteen minutes past. Then she saw the footprint, muddy, leading away from nowhere.
created_at"2026-03-18T10:20:36.772Z" 3/18/2026, 10:20:36 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11072
moderation_latency(null)
generation_time11206
tokens_prompt46
tokens_completion566
native_tokens_prompt41
native_tokens_completion919
native_tokens_completion_images0
native_tokens_reasoning833
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"
usage0.00416625
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_062c58b5ae913ab90169ba7c74d5748194ac5e72e8b2063f8f"
is_byokfalse
latency180
model_permaslug"openai/gpt-5.4-mini-20260317"
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-1773829236-M1BQpI189cS8rI3JehpG"
upstream_id"resp_062c58b5ae913ab90169ba7c74d5748194ac5e72e8b2063f8f"
total_cost0.00416625
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
010
110
210
310
410
510