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Run: 2026-07-09-01KX419DFY9DP47S1K8P466VG8
Run Details
Model:
GPT-5.6 Sol (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
13.6s
Cost:
$0.037105
Provider:
OpenAI
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
At midnight, Inspector Mara Venn arrived at Blackthorn Hall, where every window blazed except one above the locked library door. The butler waited beneath the dripping portico, clutching a silver candlestick and insisting nobody had entered since dinner ended abruptly. Inside, twelve guests stood silently around Lord Blackthorn, whose body lay facedown beside a chessboard missing only its white queen. A crimson thread circled his throat, while both hands remained folded neatly beneath him, as though arranged for solemn prayer. On the carpet, someone had written MARA in ash, using letters too precise to be accidental or hurried by anyone. Mara had never visited Blackthorn Hall before, yet the dead man's final accusation seemed unmistakably intended for her alone tonight. Then the dark window upstairs opened slowly, and a pale hand released something small and gleaming into the rain below. It struck the library glass with a bell's clear note, then landed at Mara's feet: the missing, bloodstained white queen.
created_at
"2026-07-09T18:12:24.709Z"
7/9/2026, 6:12:24 PM
model
"openai/gpt-5.6-sol-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3770
moderation_latency
(null)
generation_time
13434
tokens_prompt
46
tokens_completion
693
native_tokens_prompt
41
native_tokens_completion
1230
native_tokens_completion_images
0
native_tokens_reasoning
1022
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
"completed"
service_tier
"default"
usage
0.037105
router
(null)
provider_responses
0
endpoint_id
"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id
"resp_031059f1114ff7ef016a4fe488c69c819385e67ea10852ba9c"
is_byok
false
latency
191
model_permaslug
"openai/gpt-5.6-sol-20260709"
provider_name
"OpenAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer
(null)
request_id
"req-1783620744-0S3x7XVLAfeSmgjjscsi"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620744-lHkfdIT8Y3QWr0qHbfi4"
upstream_id
"resp_031059f1114ff7ef016a4fe488c69c819385e67ea10852ba9c"
total_cost
0.037105
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
response_cache_source_id
(null)
data_region
"global"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20