Run: 2026-03-06-01KK1H37N94QZBYXGQ1B9V838C

Run Details

Model:
GPT-5.4
Duration:
4.3s
Cost:
$0.001662
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
80.33% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, Blackthorn Manor loomed above the cliffs, its windows blazing like watchful eyes through the storm's relentless silver rain. Guests arrived in silence, carrying secrets heavier than their soaked coats, while thunder rolled across the sea like judgment. Inside, the grandfather clock struck twelve, and Lady Wren collapsed beside the hearth, a ruby-handled letter opener buried deep. No one screamed at first; they only stared, counting heartbeats, as blood threaded slowly between marble tiles toward polished shoes.
created_at"2026-03-06T12:13:57.808Z" 3/6/2026, 12:13:57 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency423
moderation_latency(null)
generation_time4248
tokens_prompt46
tokens_completion135
native_tokens_prompt41
native_tokens_completion104
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"
usage0.0016625
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_08b6d87f2331f3d50169aac505deb0819682efb9cc385c656c"
is_byokfalse
latency175
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-1772799237-fd6mTvVCjQSYjI5shoJQ"
upstream_id"resp_08b6d87f2331f3d50169aac505deb0819682efb9cc385c656c"
total_cost0.0016625
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
80.33% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
219
320