Run: 2026-09-23-01M36NTDP1E6QHQ7RD43KXTKRB

Run Details

Duration:
16.9s
Cost:
$0.000858
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, the observatory’s great clock stopped, though every witness swore its hands had continued moving beneath the storm outside. When Dr. Vale was found beneath the telescope, rainwater glittered on his coat, but his polished shoes remained bone dry. Inspector Mara Venn noticed the locked door, shattered window, and muddy footprint ending abruptly beside the desk, without any trail. Around them, six guests stood silent, each claiming to hear the dead astronomer speaking after his final breath that evening. Mara studied the youngest guest, whose clean, trembling hands concealed a silver key beneath one cuff of his velvet coat. Then the clock struck thirteen, and every guest turned toward the empty chair beside the corpse, all at once, silently.
created_at"2026-09-23T08:23:53.29Z" 9/23/2026, 8:23:53 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency15906
moderation_latency(null)
generation_time16582
tokens_prompt46
tokens_completion195
native_tokens_prompt41
native_tokens_completion1707
native_tokens_completion_images0
native_tokens_reasoning1552
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"
usage0.0008576
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151833-0oHB6RDhg9agloePSzy4"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151833-bE1llnftLpXzUBdYNFkh"
upstream_id"resp_04015cc3f0ba5ee6016ab38c996d0887d1aaca8fa2b776e366"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_04015cc3f0ba5ee6016ab38c996d0887d1aaca8fa2b776e366"
is_byokfalse
latency684
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0008576
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520