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Run: 2026-09-02-01M1HJ2MJBXCPNRJFY1X237ZN3
Run Details
Model:
Qwen 3.8 Flash (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1m 10s
Cost:
$0.002211
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
Messages
Meta
AI
Rain tapped the window as Eleanor found the corpse beneath the old oak table inside, and silence filled the room. His hand clutched a torn letter, ink smeared by blood, spelling a name Eleanor recognized well in the old house. A clock ticked past midnight, and distant dog barks made the hallway shadows shift toward the stairs behind the door. Eleanor noticed the pale eyes open slightly, not blinking, as if the corpse tried to warn her with one hand. The floorboard creaked above them, and footsteps began circling, searching, for whatever the killer had left in the locked room.
created_at
"2026-09-02T17:19:10.917Z"
9/2/2026, 5:19:10 PM
model
"qwen/qwen3.8-flash-20260826"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5698
moderation_latency
(null)
generation_time
42196
tokens_prompt
46
tokens_completion
4180
native_tokens_prompt
98
native_tokens_completion
4673
native_tokens_completion_images
(null)
native_tokens_reasoning
4547
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
service_tier
(null)
usage
0.00221101
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788369550-c7fYv1u8Za5s38WzgJYx"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788369550-gve63kRVoost3ZK6wUuB"
upstream_id
"chatcmpl-d7936c0a-c4d4-9ea3-9002-289b47a05e80"
provider_responses
0
endpoint_id
"84b1e4a7-5aed-4464-818f-1994f0b4ee18"
id
"chatcmpl-d7936c0a-c4d4-9ea3-9002-289b47a05e80"
is_byok
false
latency
5697
model_permaslug
"qwen/qwen3.8-flash-20260826"
provider_name
"Alibaba"
status
200
total_cost
0.00221101
cache_discount
(null)
upstream_inference_cost
0
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
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
20