Run: 2026-09-02-01M1HGNTQY2TYE6K5JDZYH4TR6

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
5.1s
Cost:
$0.006377
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Heavy rain battered the window. Midnight struck the grandfather clock. Lord Blackwood sat completely still. Cold tea rested beside him. Fresh blood stained his collar. A silver dagger pierced deep. The library doors blew open. Detective Vance entered very slowly. He surveyed the dark room. Muddy tracks marked the floor. The killer had just fled. Vance checked for any pulse. Nothing moved under his skin. The deadly game had begun.
created_at"2026-09-02T16:54:15.045Z" 9/2/2026, 4:54:15 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1161
moderation_latency(null)
generation_time5097
tokens_prompt46
tokens_completion498
native_tokens_prompt37
native_tokens_completion1693
native_tokens_completion_images0
native_tokens_reasoning1607
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"
usage0.0063765
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788368055-5Qv3wXZ8zhGNpHQjrLfM"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788368055-t7UyXBuWmqLKKQ2W0AkP"
upstream_id"t1SYaojmBqyb_uMP-4PkiQ8"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"t1SYaojmBqyb_uMP-4PkiQ8"
is_byokfalse
latency1160
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.0063765
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
sentences14
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135