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Run: 2026-10-05-01M46BAY81XKVY1Q9H1KSSHQJH
Run Details
Model:
GPT-6.1 Sol (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
21.8s
Cost:
$0.008462
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
By the time Inspector Vale reached Blackthorn House, the rain had washed every footprint from the gravel except one pair. The prints began beneath the library window and ended at the locked front door, where nobody admitted having stood tonight. Inside, Lord Blackthorn sat upright beside the fireplace, his untouched brandy gleaming amber beside the hand resting on his knee. His wife insisted he was sleeping until Vale noticed the silver letter opener protruding neatly from his embroidered silk waistcoat. Beyond the doorway, six dinner guests watched in silence, each wearing the strained expression of someone rehearsing an innocent surprise. Only the youngest daughter looked away, studying a portrait whose painted eyes had been scratched out sometime during the evening. Vale bent toward the corpse and found a folded note tucked beneath its collar, damp with something darker than rainwater. Before he could unfold it, the telephone rang upstairs, and Lady Blackthorn whispered that the line had been disconnected yesterday.
created_at
"2026-10-05T15:36:22.024Z"
10/5/2026, 3:36:22 PM
model
"openai/gpt-6.1-sol-20260929"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
12255
moderation_latency
(null)
generation_time
21755
tokens_prompt
46
tokens_completion
709
native_tokens_prompt
41
native_tokens_completion
838
native_tokens_completion_images
0
native_tokens_reasoning
645
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
0.008462
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791214582-JoKN9U4Ko19tIxAcROyo"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791214582-GnmXM62iBz69tDVbpTOq"
upstream_id
"resp_055b5c50d3c0858c016ac3c3f6436c87d1bd176571965bb1b2"
provider_responses
0
endpoint_id
"dfb9d5c3-63f9-4263-8b78-4fa97dcb3d5e"
id
"resp_055b5c50d3c0858c016ac3c3f6436c87d1bd176571965bb1b2"
is_byok
false
latency
478
model_permaslug
"openai/gpt-6.1-sol-20260929"
provider_name
"OpenAI"
status
200
total_cost
0.008462
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
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