Run: 2026-03-09-01KK9PYHR92C8ENRKADYS4747X

Run Details

Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
9.8s
Cost:
$0.005908
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 manor windows. Midnight pressed against Blackthorn Hall. Inside, silver chimed once, wrong. Lady Vale lay beside roses. Her throat bore crimson pearls. No servant admitted hearing footsteps. The clock resumed, counting alibis. Detective Marsh arrived without umbrella. He smelled lilacs and gunpowder. Someone in that house smiled.
created_at"2026-03-09T16:30:11.221Z" 3/9/2026, 4:30:11 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9586
moderation_latency(null)
generation_time9705
tokens_prompt46
tokens_completion338
native_tokens_prompt41
native_tokens_completion387
native_tokens_completion_images0
native_tokens_reasoning309
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"
usage0.0059075
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0c618ef969d7fb660169aef593534481968327eb08fd3cd3eb"
is_byokfalse
latency226
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-1773073811-mYk3wbrCMnO9p7K0TOLy"
upstream_id"resp_0c618ef969d7fb660169aef593534481968327eb08fd3cd3eb"
total_cost0.0059075
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