Run: 2026-05-20-01KS25RXD8W608Q0MCW8KDP4WQ

Run Details

Duration:
1.9s
Cost:
$0.001794
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
54.76% 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 lashed against the leaded windows of Blackwood Manor, washing away any hope of a quiet, peaceful autumn evening. Inside, a grandfather clock chimed eight times, its heavy brass pendulum swinging rhythmically like a slow, deliberate beating heart. Lord Archibald sat stiffly in his favorite leather armchair, staring blankly ahead with eyes that could no longer see. A delicate porcelain teacup lay shattered on the Persian rug, surrounded by a dark, pooling liquid and white sugar. Standing in the doorway, the trembling butler clutched a silver serving tray closely against his chest, gasping for breath. He stared in sheer horror at his master's pale, rigid face, realizing immediately that the wealthy gentleman was dead. Suddenly, a cold draft swept through the dimly lit drawing room, causing the flickering candlelight to dance wildly. In the shadow of the velvet curtains, a gloved hand quietly closed the heavy oak door and locked it.
created_at"2026-05-20T07:49:30.67Z" 5/20/2026, 7:49:30 AM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency676
moderation_latency(null)
generation_time1808
tokens_prompt46
tokens_completion243
native_tokens_prompt38
native_tokens_completion193
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"
usage0.001794
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"imcNapW0Mpy3_uMPvM_bGA"
is_byokfalse
latency676
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-1779263370-qJYQi5eMKazwWW8HUp8C"
session_id(null)
api_type"completions"
id"gen-1779263370-ta5X9PPW93yHQB3NvMQh"
upstream_id"imcNapW0Mpy3_uMPvM_bGA"
total_cost0.001794
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
54.76% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
019
119
219
319
419
519
618
719