Run: 2026-07-09-01KX40R8Z7B8W0HSQHXZT6MM5E

Run Details

Duration:
4.9s
Cost:
$0.002172
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
40.44% 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
Rain battered Blackthorn Manor as Detective Mara Vale arrived, summoned by a scream that ended precisely at midnight sharp. The butler waited beneath the portico, pale and trembling, while thunder concealed the distant tolling of the village clock. “Lord Ashcombe is dead,” he whispered, clutching a silver candlestick stained with something darker than rainwater from the storm outside. Mara entered the drawing room, where seven guests stood silently around the body beside an extinguished fireplace beneath portraits. A single chess piece rested in Lord Ashcombe’s open palm: the black queen, gleaming wetly beneath chandelier light overhead.
created_at"2026-07-09T18:03:04.662Z" 7/9/2026, 6:03:04 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency633
moderation_latency(null)
generation_time2634
tokens_prompt46
tokens_completion169
native_tokens_prompt41
native_tokens_completion138
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"
usage0.0021725
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0ba6bf4e04048ac8016a4fe25960b88195ae50e79343d05a06"
is_byokfalse
latency260
model_permaslug"openai/gpt-5.6-terra-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620184-K4GbFjON2a8ASkimB0zc"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620184-4JNfmGOYS5DpvbjOr51o"
upstream_id"resp_0ba6bf4e04048ac8016a4fe25960b88195ae50e79343d05a06"
total_cost0.0021725
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
40.44% Matches word count n/a
neededCleanfalse
sentences3
wordCounts
019
119
258