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Run: 2026-07-09-01KX413S27S8BCT1E3SCC0AGD6
Run Details
Model:
GPT-5.6 Sol (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
16.5s
Cost:
$0.046045
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
Rain drummed against Blackwood Manor as Inspector Vale arrived, finding every window illuminated except the library’s narrow eastern pane upstairs. Inside, twelve dinner guests stood silently around Lord Blackwood, whose blood darkened the carpet beneath his outstretched hand like ink. The door remained locked from within, while its only key gleamed inside the dead man’s tightly clenched left fist ominously. On the desk, a silver clock ticked backward, counting toward midnight, though midnight had already passed precisely one hour earlier. Vale noticed muddy footprints crossing the ceiling, stopping directly above the body, where no ladder or hatch appeared anywhere nearby. “Nobody entered,” whispered Lady Blackwood, twisting her pearls, “and nobody left after the scream summoned us here to the library.” Then the corpse’s clenched fingers opened, releasing a warm brass button engraved with Inspector Vale’s own initials in fresh blood. Every guest stared at Vale, but he watched the backward clock stop suddenly, then begin striking thirteen slow, hollow chimes.
created_at
"2026-07-09T18:09:19.95Z"
7/9/2026, 6:09:19 PM
model
"openai/gpt-5.6-sol-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4098
moderation_latency
(null)
generation_time
15943
tokens_prompt
46
tokens_completion
674
native_tokens_prompt
41
native_tokens_completion
1528
native_tokens_completion_images
0
native_tokens_reasoning
1319
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
0.046045
router
(null)
provider_responses
0
endpoint_id
"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id
"resp_07bff73de8baec1e016a4fe3d000a88193b693fb95b698a2a9"
is_byok
false
latency
231
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-1783620559-JT1VDnhm2UkSMk3IujjF"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620559-uGhZKZErzl8yBoCWcKLU"
upstream_id
"resp_07bff73de8baec1e016a4fe3d000a88193b693fb95b698a2a9"
total_cost
0.046045
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