Run: 2026-07-09-01KX40B5QJ80ZHN3HN08A9AP4Q

Run Details

Duration:
2.1s
Cost:
$0.001543
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
3.95% 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 lighthouse bell rang once, though its rope had been cut years before by someone careful. Inspector Vale arrived beneath hard rain, finding the keeper sprawled beside shattered glass and a silent revolver. His pockets held no keys, no letters, only a damp chess pawn carved from blackened whale bone. Outside, three guests waited nervously, each claiming they heard nothing except waves striking the cliffs below.
created_at"2026-07-09T17:55:53.721Z" 7/9/2026, 5:55:53 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency701
moderation_latency(null)
generation_time2008
tokens_prompt46
tokens_completion111
native_tokens_prompt41
native_tokens_completion96
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"
usage0.0015425
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0024ab8a64aed739016a4fe0a9cbc88197ace72bfd440ed68e"
is_byokfalse
latency287
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-1783619753-GU5kPFkTDFjLmfAj5ygH"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619753-fgFiYV0KDvoqYmhJQmaM"
upstream_id"resp_0024ab8a64aed739016a4fe0a9cbc88197ace72bfd440ed68e"
total_cost0.0015425
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
3.95% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
018
117
217
316