Run: 2026-09-02-01M1HJ4V9C4HSB0B8NYRKMP8QB

Run Details

Model:
Qwen 3.8 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
14.9s
Cost:
$0.000838
Provider:
Alibaba

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
Rain tapped the gallery windows when Detective Mara heard a scream shatter the midnight feast among the crowd that night. Inside, Lord Ashford lay beneath the chandelier, his smile too wide and his teacup still warm beside his cold hand. No one moved except a maid clutching a note marked with his initials as the grandfather clock struck twelve sharp.
created_at"2026-09-02T17:19:55.699Z" 9/2/2026, 5:19:55 PM
model"qwen/qwen3.8-flash-20260826"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency669
moderation_latency(null)
generation_time14860
tokens_prompt46
tokens_completion1591
native_tokens_prompt98
native_tokens_completion1751
native_tokens_completion_images(null)
native_tokens_reasoning1675
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(null)
usage0.00083767
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788369595-XxYpxgnnBwDttheYApsG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788369595-q4eul1slbkFnNPI4jvbP"
upstream_id"chatcmpl-c24f04bc-b2c8-9c4e-bf28-9eec887bbb90"
provider_responses
0
endpoint_id"84b1e4a7-5aed-4464-818f-1994f0b4ee18"
id"chatcmpl-c24f04bc-b2c8-9c4e-bf28-9eec887bbb90"
is_byokfalse
latency669
model_permaslug"qwen/qwen3.8-flash-20260826"
provider_name"Alibaba"
status200
total_cost0.00083767
cache_discount(null)
upstream_inference_cost0
provider_name"Alibaba"
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
sentences3
wordCounts
020
120
220