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Run: 2026-09-23-01M37HJKQQ47HWD7ATG144TNGM
Run Details
Model:
GPT-6 Sol (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
19.8s
Cost:
$0.012622
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
95.63%
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 church bells rang thirteen times, and everyone in Blackthorn House pretended they had heard only twelve chimes. By morning, the host lay beneath the dining table, his white gloves stained red, though the blood belonged elsewhere entirely. Inspector Mara Vale noticed the missing place setting first, then the fresh scratches beneath the dead man's silver wedding ring. No one admitted inviting a thirteenth guest, although an extra coat still dripped rainwater onto the spotless white marble floor. Outside, the gates remained locked, and the snow beyond them bore no footprints except those of the dead man's daughter. She had arrived yesterday by train, according to her mother, who now insisted the railway had closed three years ago. Then Mara found a ticket tucked inside the corpse's mouth, punched for a departure scheduled precisely thirteen minutes after midnight. On its back, written in the dead man's familiar hand, were six words: Do not let her leave again. Mara turned toward the daughter, but the girl's chair was empty, and her coat still hung beside the locked door.
created_at
"2026-09-23T16:28:57.471Z"
9/23/2026, 4:28:57 PM
model
"openai/gpt-6-sol-20260922"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5028
moderation_latency
(null)
generation_time
19792
tokens_prompt
46
tokens_completion
1018
native_tokens_prompt
41
native_tokens_completion
1254
native_tokens_completion_images
0
native_tokens_reasoning
1034
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
0.012622
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790180937-T7dpJe2WgIlYwvoVYUuT"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790180937-DDUHKDo939ScE60K4JjJ"
upstream_id
"resp_0bf29fc824115043016ab3fe499dec87d1a694c3791b7bea2d"
provider_responses
0
endpoint_id
"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id
"resp_0bf29fc824115043016ab3fe499dec87d1a694c3791b7bea2d"
is_byok
false
latency
576
model_permaslug
"openai/gpt-6-sol-20260922"
provider_name
"OpenAI"
status
200
total_cost
0.012622
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
95.63%
Matches word count
n/a
neededClean
false
sentences
9
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
19
8
20