Run: 2026-05-20-01KS2634N4VFN9MNBM2MV1EH43

Run Details

Duration:
2.1s
Cost:
$0.002163
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
64.59% 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
The grandfather clock struck midnight, sending a chilling shiver through the silent hallways of the sprawling, ancient country manor. Outside, a torrential rain lashed against the tall glass windows, masking the sound of footsteps on the creaking floor. Inside the locked study, Sir Reginald sat motionless at his heavy mahogany desk, his eyes staring blankly at nothing. A dark stain of crimson blood slowly pooled across the typed pages of his newly revised, highly controversial testament. The silver letter opener, which usually rested neatly on his leather blotter, was now buried deeply in his chest. No signs of a violent struggle existed within the tidy room, suggesting he knew his killer very well indeed. A single, damp footprint stained the Persian rug near the open window, where the cold wind howled quite fiercely. Beside the lifeless hand of the baronet lay a crumpled paper containing a cryptic message written in smeared black ink. "The final debt is paid," the brief note declared in elegant, sloping calligraphy that hinted at a woman’s hand. Soon, a distant, piercing scream shattered the heavy silence, signaling that the grim discovery had finally been made tonight.
created_at"2026-05-20T07:55:05.768Z" 5/20/2026, 7:55:05 AM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency669
moderation_latency(null)
generation_time2048
tokens_prompt46
tokens_completion306
native_tokens_prompt38
native_tokens_completion234
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"STOP"
service_tier"standard"
usage0.002163
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"2WgNatOlN_6__uMPo5_K6A8"
is_byokfalse
latency669
model_permaslug"google/gemini-3.5-flash-20260519"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer(null)
request_id"req-1779263705-3oq4YlW9VOsHPrHMur8j"
session_id(null)
api_type"completions"
id"gen-1779263705-2CdelQC4hGXHubZaUlK1"
upstream_id"2WgNatOlN_6__uMPo5_K6A8"
total_cost0.002163
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
64.59% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
019
119
219
319
419
519
619
720
819
919