Run: 2026-05-19-01KS0TWVKH14RAEZBYSS7HNMW0

Run Details

Duration:
10.0s
Cost:
$0.022584
Provider:
Google AI Studio

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
Midnight rain beat against the library windows, washing away the secrets that Lord Harrington had kept for many long years. Now, his cold body slumped over the mahogany desk, a silver letter opener protruding deeply from his expensive velvet waistcoat. Inspector Black stepped slowly through the shattered glass doors, adjusting his wet trench coat while scanning the dark, bloody study. The distinct smell of bitter almonds lingered in the damp air, suggesting that the blade was not the only weapon. Standing in the shadows, the old butler trembled violently, clutching a gold pocket watch that had stopped at exactly twelve.
created_at"2026-05-19T19:20:11.127Z" 5/19/2026, 7:20:11 PM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1476
moderation_latency(null)
generation_time9859
tokens_prompt46
tokens_completion965
native_tokens_prompt38
native_tokens_completion2503
native_tokens_completion_images0
native_tokens_reasoning2390
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"
usage0.022584
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"67cMatnGFuy4qtsPwszRyAU"
is_byokfalse
latency1476
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-1779218411-1Sm02AX8jfOpipcYNLsF"
session_id(null)
api_type"completions"
id"gen-1779218411-J8Y4zFX6gTChuWJvvaUt"
upstream_id"67cMatnGFuy4qtsPwszRyAU"
total_cost0.022584
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420