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Run: 2026-07-09-01KX40XCNS3N95YFBNHKGH3539
Run Details
Model:
GPT-5.6 Sol (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
19.4s
Cost:
$0.046255
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, the grandfather clock stopped, and every guest in Blackthorn Manor heard a woman's scream from the eastern tower. Detective Mara Voss set down her untouched wine, noticing fresh blood glistening beneath the locked library door nearby in silence. Lord Ashcombe reached for the key, but discovered his waistcoat pocket empty and his trembling fingers already stained dark crimson. Nobody admitted seeing the victim arrive that night, although her silver shoes waited neatly beside the rain darkened entrance carpet. Mara knelt, touched the blood, and found it warm, while thunder rattled portraits whose painted eyes seemed suddenly watchful tonight. Then the library door swung open by itself, revealing darkness, overturned furniture, and a body dressed entirely in white silk. Around the dead woman's throat hung a brass tag engraved with Mara's name and tomorrow's date in tiny precise letters. Behind them, someone whispered that the murderer had already left, just as muddy footprints appeared across the spotless ceiling overhead.
created_at
"2026-07-09T18:05:50.66Z"
7/9/2026, 6:05:50 PM
model
"openai/gpt-5.6-sol-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4450
moderation_latency
(null)
generation_time
19254
tokens_prompt
46
tokens_completion
564
native_tokens_prompt
41
native_tokens_completion
1535
native_tokens_completion_images
0
native_tokens_reasoning
1334
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
0.046255
router
(null)
provider_responses
0
endpoint_id
"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id
"resp_09674e6b18cd7f4c016a4fe2febcac8196b4829ef52ba8125f"
is_byok
false
latency
214
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-1783620350-MgQP38DsUcKE10yPjEkD"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620350-0HoPd4vSCR4QyS4zLNfw"
upstream_id
"resp_09674e6b18cd7f4c016a4fe2febcac8196b4829ef52ba8125f"
total_cost
0.046255
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