Run: 2026-03-18-01KM094N9S1FR7XRKHVR0V4615

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.3s
Cost:
$0.002573
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched the alley's darkness. The body waited beside bins. Officer Vale arrived without hurry. She noticed the missing watch. Someone had cleaned the blood. Above, a window breathed light.
created_at"2026-03-18T10:51:23.335Z" 3/18/2026, 10:51:23 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7106
moderation_latency(null)
generation_time7181
tokens_prompt46
tokens_completion460
native_tokens_prompt41
native_tokens_completion565
native_tokens_completion_images0
native_tokens_reasoning516
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"
usage0.00257325
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_08895f213310c8dc0169ba83ab634c8190bb2fa70cf76b0c95"
is_byokfalse
latency240
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-1773831083-hfW1Mfx4AWu0WzGvc8Qq"
upstream_id"resp_08895f213310c8dc0169ba83ab634c8190bb2fa70cf76b0c95"
total_cost0.00257325
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
05
15
25
35
45
55