Run: 2026-07-09-01KX41EAWB7863JEX9RTQF5R0D

Run Details

Duration:
1.7s
Cost:
$0.000677
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
93.52% 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 tapped against windows while detectives gathered around the corpse. Nobody spoke; candlelight revealed crimson stains beneath the overturned chair. Inspector Vale studied footprints crossing silently toward the locked library door. Outside, thunder interrupted distant church bells mourning another vanished soul tonight. A silver locket rested beside one gloved, trembling hand there. Vale noticed fresh mud clinging beneath every polished fingernail carefully. Then someone whispered, “The murderer remains inside this house tonight.” Every detective turned toward the trembling servant holding bloody shears.
created_at"2026-07-09T18:15:05.875Z" 7/9/2026, 6:15:05 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency535
moderation_latency(null)
generation_time1480
tokens_prompt46
tokens_completion168
native_tokens_prompt41
native_tokens_completion106
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.000677
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_002bafcb1c1e9fad016a4fe52a016c819495f135acd6b0aa80"
is_byokfalse
latency354
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620905-lDZb0lPh0eNHtPdHBrYB"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620905-szjIQxTcwCy3S6HN8Mg8"
upstream_id"resp_002bafcb1c1e9fad016a4fe52a016c819495f135acd6b0aa80"
total_cost0.000677
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
93.52% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
010
110
211
311
410
510
610
710