Run: 2026-03-09-01KKACCVHTYPAWM1R4AKZB0KGP

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.4s
Cost:
$0.005038
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 worried the black windows. Midnight pressed against Harrow House. Inside, candles trembled beside silver. Guests whispered over untouched champagne. Then Lady Vale screamed once. Her brother collapsed near dinner. A knife gleamed beneath peonies. No servant admitted seeing anyone. Detective Graves removed wet gloves. He smiled at nobody present.
created_at"2026-03-09T22:45:00.101Z" 3/9/2026, 10:45:00 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6135
moderation_latency(null)
generation_time6218
tokens_prompt46
tokens_completion224
native_tokens_prompt41
native_tokens_completion329
native_tokens_completion_images0
native_tokens_reasoning247
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"
usage0.0050375
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0210fbb3a835bf160169af4d6c36f481959ac55731608d4d92"
is_byokfalse
latency268
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-1773096300-eTirWzn4Y9oG96ZszBId"
upstream_id"resp_0210fbb3a835bf160169af4d6c36f481959ac55731608d4d92"
total_cost0.0050375
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