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Run: 2026-07-09-01KX40R0MEQA6YMJBK1MBEBZZ0
Run Details
Model:
GPT-5.6 Sol (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
15.8s
Cost:
$0.045115
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 Lady Harrow's scream sliced through Blackthorn Manor's locked and listening halls without warning. Inspector Vale arrived before dawn, carrying one umbrella, two notebooks, and a private fear of rooms without windows or exits. The victim sat upright in the library, smiling faintly, while fresh snow covered every door and footprint outside completely overnight. A silver key rested upon his tongue, engraved with tomorrow's date and stained by neither blood nor tarnish at all. Beside him, seven candles burned blue, although the grate was cold and every window had been nailed shut from inside. The household gathered silently, each servant wearing black gloves, each relative denying they had heard the fatal scream upstairs earlier. Then the dead man's pocket watch began ticking backward, while someone behind Inspector Vale whispered that it knew his name. Vale turned, but only a portrait faced him, its painted eyes newly closed beneath a veil of glistening silver frost.
created_at
"2026-07-09T18:02:54.487Z"
7/9/2026, 6:02:54 PM
model
"openai/gpt-5.6-sol-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
14826
moderation_latency
(null)
generation_time
15548
tokens_prompt
46
tokens_completion
269
native_tokens_prompt
41
native_tokens_completion
1497
native_tokens_completion_images
0
native_tokens_reasoning
1298
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
0.045115
router
(null)
provider_responses
0
endpoint_id
"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id
"resp_010793bd82549301016a4fe24e918c819692cc2e541716e10d"
is_byok
false
latency
260
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-1783620174-1ilOC4oKffJ8XbRu8oSZ"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620174-LvAi12iEe1mUjP15IWXl"
upstream_id
"resp_010793bd82549301016a4fe24e918c819692cc2e541716e10d"
total_cost
0.045115
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