Run: 2026-07-09-01KX40FQ5TQQX85885DNJCXG3G

Run Details

Duration:
4.2s
Cost:
$0.001737
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
46.93% 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, Inspector Vale found the mayor's body beneath the clocktower, smiling faintly despite the knife lodged neatly between ribs. Rain polished cobblestones outside, while twelve guests waited silently in the ballroom, each holding an untouched glass of champagne. The victim's pocket contained a silver key, a torn photograph, and a note reading, “Ask who heard bells.” Vale examined the wound, then glanced upward, noticing the clock hands pointed stubbornly toward eleven minutes past midnight.
created_at"2026-07-09T17:58:22.659Z" 7/9/2026, 5:58:22 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency778
moderation_latency(null)
generation_time4124
tokens_prompt46
tokens_completion132
native_tokens_prompt41
native_tokens_completion109
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"
usage0.0017375
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_011de26cbbd4254f016a4fe13ec49881938939dce68fd14e7c"
is_byokfalse
latency321
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-1783619902-utAZ3XN8QAs6Qq9j8T3L"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619902-ptHnWm9m2zGgqjmg2jOf"
upstream_id"resp_011de26cbbd4254f016a4fe13ec49881938939dce68fd14e7c"
total_cost0.0017375
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
46.93% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
218
318