Run: 2026-03-09-01KKAC0RS1BZBS5689KJRDS4CD

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
9.5s
Cost:
$0.006748
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 needled Blackthorn Manor windows. Inside, the grandfather clock stuttered. Lady Wren poured untouched sherry. Guests avoided each other's eyes. Then the lights failed abruptly. A scream split velvet darkness. Candles flared; Felix lay motionless. Blood jeweled his white cravat. No window stood open anywhere. Someone in that room smiled.
created_at"2026-03-09T22:38:24.044Z" 3/9/2026, 10:38:24 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9230
moderation_latency(null)
generation_time9359
tokens_prompt46
tokens_completion374
native_tokens_prompt41
native_tokens_completion443
native_tokens_completion_images0
native_tokens_reasoning364
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"
usage0.0067475
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0ea371e0ad3a2a5b0169af4be01d5481908f149c325db189e1"
is_byokfalse
latency251
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-1773095904-UuyspTGXolpSP6f2vZHC"
upstream_id"resp_0ea371e0ad3a2a5b0169af4be01d5481908f149c325db189e1"
total_cost0.0067475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95