Run: 2026-09-02-01M1HJW7WW5TEZGEQAS4JZWZVZ

Run Details

Duration:
9.8s
Cost:
$0.012134
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
Cold rain lashed furiously against the tall stained glass windows of Blackwood Manor as midnight struck with a heavy chime. Inside the dark study, Lord Harrington sat unnaturally still behind his mahogany desk with a silver blade piercing his chest. Thick crimson blood dripped steadily onto the unfinished will, staining the expensive parchment and pooling near an overturned crystal tumbler. Detective Miller paused in the doorway, smelling bitter almonds beneath the metallic stench while the heavy chamber door swung shut. Six nervous guests were waiting downstairs in the parlor, and every single one possessed a powerful reason to kill him.
created_at"2026-09-02T17:32:42.276Z" 9/2/2026, 5:32:42 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1491
moderation_latency(null)
generation_time9739
tokens_prompt46
tokens_completion1152
native_tokens_prompt38
native_tokens_completion3228
native_tokens_completion_images0
native_tokens_reasoning3116
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"default"
usage0.0121335
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370362-kZe9kjQC1zerVLC4VeIt"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370362-NuTX5lRk4ks7TEzLRZsk"
upstream_id"ul2YasCtFerK_uMPmfqUWA"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"ul2YasCtFerK_uMPmfqUWA"
is_byokfalse
latency1491
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.0121335
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

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