Run: 2026-03-18-01KM08CKSN3N7PX4QVNMQEBJTV

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
4.8s
Cost:
$0.001570
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's blackout windows tonight. Detective Mara Vale paused beside the body, notebook trembling slightly. Blood glistened beneath the chandelier, pooling around a broken watch. Every guest claimed innocence, yet nobody met her searching eyes. Somewhere upstairs, a door clicked shut, and silence tightened again.
created_at"2026-03-18T10:38:15.36Z" 3/18/2026, 10:38:15 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4618
moderation_latency(null)
generation_time4743
tokens_prompt46
tokens_completion251
native_tokens_prompt41
native_tokens_completion342
native_tokens_completion_images0
native_tokens_reasoning267
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"
usage0.00156975
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0e6eab74696f16e90169ba80976ec081959ef401b33077799f"
is_byokfalse
latency222
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-1773830295-KmiYrMuscKBxeTQTULuj"
upstream_id"resp_0e6eab74696f16e90169ba80976ec081959ef401b33077799f"
total_cost0.00156975
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
010
110
210
310
410