Run: 2026-09-23-01M36P0ECTK32QA5X68Q6PV68Z

Run Details

Duration:
3.2s
Cost:
$0.000078
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
78.54% 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 veiled Blackthorn House that evening. Inspector Vale arrived before the storm. A lantern trembled beside the doorway. The butler opened it, pale-faced. “Someone’s dead upstairs,” he whispered. Vale entered, removing his soaked gloves. Thunder shook portraits along the staircase. At its landing, blood gleamed black. The study door stood partly open. Inside, Lord Blackthorn lay motionless. A silver knife rested nearby. The clock had stopped at midnight. “Who discovered him?” Vale asked quietly. The butler pointed toward the library. “His daughter,” he answered, trembling. Vale noticed mud beneath her window. Outside, fresh footprints vanished in rain. Then someone locked the front door.
created_at"2026-09-23T08:27:10.625Z" 9/23/2026, 8:27:10 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2183
moderation_latency(null)
generation_time3142
tokens_prompt46
tokens_completion185
native_tokens_prompt41
native_tokens_completion147
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"
usage0.0000776
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790152030-dzC1VRqKirBjMiar0qk2"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790152030-8abbw9MUuZ0eGKtjXFCL"
upstream_id"resp_02245121bf1771f9016ab38d5eb95087d18de1917522a16914"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_02245121bf1771f9016ab38d5eb95087d18de1917522a16914"
is_byokfalse
latency943
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000776
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
78.54% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
06
16
26
35
45
56
66
76
86
95
105
116
1217
136
146
156