Run: 2026-03-06-01KK1HFA9RTWXACRGHYN7BQ5SV

Run Details

Duration:
4.4s
Cost:
$0.002172
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain rattled Blackthorn Manor while guests whispered around silver candles. At midnight, the clock stuttered, then swallowed every hopeful sound. Lady Harrow entered laughing, her emerald necklace bright against velvet. Moments later, a scream tore sharply through the candlelit gallery. We found her crumpled beneath the portrait of smiling ancestors. The necklace was gone, and blood jeweled her pale throat. No window stood open, and every door remained bolted inside. Yet among the ashes, someone had left fresh lavender petals. Inspector Vale arrived silently, removing gloves with meticulous, mournful care. He studied our faces, then announced, "One among you lies."
created_at"2026-03-06T12:20:33.728Z" 3/6/2026, 12:20:33 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency487
moderation_latency(null)
generation_time4326
tokens_prompt46
tokens_completion175
native_tokens_prompt41
native_tokens_completion138
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"
usage0.0021725
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_04bddbc9d87249180169aac691cb9c8193ba208aca70a75aa1"
is_byokfalse
latency172
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-1772799633-EczSJj89ZAMjtNMqVqsr"
upstream_id"resp_04bddbc9d87249180169aac691cb9c8193ba208aca70a75aa1"
total_cost0.0021725
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
010
110
210
310
410
510
610
710
810
910