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Run: 2026-07-09-01KX40C6VFSRF1ENNRX3CEM3NB
Run Details
Model:
GPT-5.6 Sol (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
21.3s
Cost:
$0.057865
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 Manor beneath rain that sounded like fingernails scratching a coffin lid shut. Inside, twelve dinner guests waited beside a dying fire, each guarding silence with the rigid poise of a practiced liar. Lord Blackthorn lay across the chessboard table, his white shirt blooming crimson around a knife buried deeply in his chest. On the board, every black piece stood upright, while the white king rested obscenely inside the dead man's open mouth. Mara removed her wet gloves and noticed thirteen place settings, although only twelve frightened guests occupied the room before her. Mara asked who was missing, and somewhere above them, a floorboard answered with one slow, deliberate creak from the darkness. Nobody spoke, but the youngest guest, Clara Vale, stared toward the locked library door and began trembling violently without explanation. Then the grandfather clock struck thirteen, and Lord Blackthorn's corpse opened its eyes just before every candle suddenly went dark.
created_at
"2026-07-09T17:56:27.639Z"
7/9/2026, 5:56:27 PM
model
"openai/gpt-5.6-sol-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
17373
moderation_latency
(null)
generation_time
20627
tokens_prompt
46
tokens_completion
513
native_tokens_prompt
41
native_tokens_completion
1922
native_tokens_completion_images
0
native_tokens_reasoning
1719
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
0.057865
router
(null)
provider_responses
0
endpoint_id
"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id
"resp_0c56dc2b2725ca52016a4fe0cbb6788194abcf238cf73d0058"
is_byok
false
latency
202
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-1783619787-P73dD7Ev9RR7tj4Tr4s5"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783619787-fQhlNwuT1ewiwSGcJ7u1"
upstream_id
"resp_0c56dc2b2725ca52016a4fe0cbb6788194abcf238cf73d0058"
total_cost
0.057865
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