Run: 2026-03-06-01KK1GMMSJERPEQB5MWCP3HXDY

Run Details

Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
2.9s
Cost:
$0.001257
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 tapped black windowpanes softly. Guests whispered beneath crystal chandeliers. Then Lady Harrow screamed upstairs. Silence seized the marble staircase. Detective Vale set down champagne. Someone had murdered the host. Footsteps smeared blood across parquet. The clock struck one, accusing. Outside, thunder applauded the secret. Inside, everyone rehearsed their innocence.
created_at"2026-03-06T12:05:59.737Z" 3/6/2026, 12:05:59 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency470
moderation_latency(null)
generation_time2872
tokens_prompt46
tokens_completion101
native_tokens_prompt41
native_tokens_completion77
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"
usage0.0012575
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_060d2f865e2fd9f60169aac327d3f88190baa1bb779235dbcc"
is_byokfalse
latency166
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-1772798759-6YxqAcU7RQqrYlXytg6s"
upstream_id"resp_060d2f865e2fd9f60169aac327d3f88190baa1bb779235dbcc"
total_cost0.0012575
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