Run: 2026-07-09-01KX41DARDZQHBT9QBA067ESKM

Run Details

Duration:
13.4s
Cost:
$0.040285
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 grandfather clock stopped, and every guest in Blackthorn Hall heard a single gunshot beneath the winter storm. Inspector Mara Venn arrived before dawn, carrying a leather case, three pencils, and an inconvenient suspicion about the grieving widow. Sir Alistair lay beside the locked library door, his white dinner jacket blooming crimson across one perfectly pressed silken lapel. No weapon appeared nearby, although a silver dueling pistol rested upstairs inside a cabinet whose key remained in Alistair’s pocket. The widow watched Mara examine the body, twisting her wedding ring whenever thunder rattled the portraits along the shadowed corridor. Near Alistair’s hand, Mara discovered a chess knight carved from bone, damp with seawater and smelling faintly of bitter almonds. Everyone denied recognizing it, yet the butler crossed himself, and Lady Blackthorn suddenly asked whether breakfast would be further delayed. Mara closed her case and smiled, because innocent households rarely contained corpses, secrets, and four different accounts of that midnight.
created_at"2026-07-09T18:14:32.979Z" 7/9/2026, 6:14:32 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11928
moderation_latency(null)
generation_time13233
tokens_prompt46
tokens_completion284
native_tokens_prompt41
native_tokens_completion1336
native_tokens_completion_images0
native_tokens_reasoning1125
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"
usage0.040285
router(null)
provider_responses
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endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_01f762c54488dab9016a4fe5090ad08193bc014c2c4cfa8d67"
is_byokfalse
latency211
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620872-BU0eEFiyorouFbOUyhyW"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620872-TuzhDIIDqcBNwhYhM6kB"
upstream_id"resp_01f762c54488dab9016a4fe5090ad08193bc014c2c4cfa8d67"
total_cost0.040285
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

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