Run: 2026-10-05-01M46BAY81XKVY1Q9H1KSSHQJH

Run Details

Duration:
21.8s
Cost:
$0.008462
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
By the time Inspector Vale reached Blackthorn House, the rain had washed every footprint from the gravel except one pair. The prints began beneath the library window and ended at the locked front door, where nobody admitted having stood tonight. Inside, Lord Blackthorn sat upright beside the fireplace, his untouched brandy gleaming amber beside the hand resting on his knee. His wife insisted he was sleeping until Vale noticed the silver letter opener protruding neatly from his embroidered silk waistcoat. Beyond the doorway, six dinner guests watched in silence, each wearing the strained expression of someone rehearsing an innocent surprise. Only the youngest daughter looked away, studying a portrait whose painted eyes had been scratched out sometime during the evening. Vale bent toward the corpse and found a folded note tucked beneath its collar, damp with something darker than rainwater. Before he could unfold it, the telephone rang upstairs, and Lady Blackthorn whispered that the line had been disconnected yesterday.
created_at"2026-10-05T15:36:22.024Z" 10/5/2026, 3:36:22 PM
model"openai/gpt-6.1-sol-20260929"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency12255
moderation_latency(null)
generation_time21755
tokens_prompt46
tokens_completion709
native_tokens_prompt41
native_tokens_completion838
native_tokens_completion_images0
native_tokens_reasoning645
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"
usage0.008462
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791214582-JoKN9U4Ko19tIxAcROyo"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791214582-GnmXM62iBz69tDVbpTOq"
upstream_id"resp_055b5c50d3c0858c016ac3c3f6436c87d1bd176571965bb1b2"
provider_responses
0
endpoint_id"dfb9d5c3-63f9-4263-8b78-4fa97dcb3d5e"
id"resp_055b5c50d3c0858c016ac3c3f6436c87d1bd176571965bb1b2"
is_byokfalse
latency478
model_permaslug"openai/gpt-6.1-sol-20260929"
provider_name"OpenAI"
status200
total_cost0.008462
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
sentences8
wordCounts
020
120
220
320
420
520
620
720