Run: 2026-05-20-01KS262XH3DYDJECRM3DF41B76

Run Details

Duration:
1.4s
Cost:
$0.001290
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
73.77% 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 heavy autumn rain battered the stained glass windows of the ancient manor where the wealthy family had gathered. Inside the dimly lit library, Lord Archibald sat motionless in his favourite velvet armchair with a glass of scotch. A silver letter opener was buried deeply into his chest, staining his expensive silk shirt with dark crimson blood. The grandfather clock chimed midnight, echoing through the silent halls where a clever murderer was surely still hiding tonight. Standing by the doorway, Inspector Thomas stared at the tragic scene and slowly pulled a leather notebook from his pocket. Every single guest in this secluded house had a dark secret and a perfect motive for wanting the patriarch dead.
created_at"2026-05-20T07:54:58.472Z" 5/20/2026, 7:54:58 AM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency633
moderation_latency(null)
generation_time1347
tokens_prompt46
tokens_completion189
native_tokens_prompt38
native_tokens_completion137
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"
usage0.00129
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"0mgNarjhJcW8_uMP1fOykAo"
is_byokfalse
latency633
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-1779263698-IFpY3VQLvXibDJCBgpO6"
session_id(null)
api_type"completions"
id"gen-1779263698-wIkFKZ4Wb7GU6W6MVA7j"
upstream_id"0mgNarjhJcW8_uMP1fOykAo"
total_cost0.00129
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
73.77% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
019
119
219
319
420
520