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Run: 2026-10-27-01M5YJEPPA5F15QMDJZBGC0ZDT
Run Details
Model:
GPT-6.1 Terra (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
13.2s
Cost:
$0.005446
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
The fog arrived before dawn, swallowing the harbor and leaving the lighthouse keeper’s cottage stranded above a sea of white. At seven, Detective Mara Voss climbed the path, following a boy who refused to look back at the silent house. Inside, the keeper lay beneath the kitchen table, his throat cut neatly, one hand still clutching a tarnished silver key. The kettle whistled on the stove, though the doctor later insisted the dead man had been cold for several hours. Mara turned off the flame and noticed four cups on the counter, three clean and one stained dark with lipstick. The boy said his father never entertained visitors, and his mother had drowned during the winter storm twelve years earlier. Then someone knocked from inside the locked pantry, softly at first, before the sound became a desperate, uneven little rhythm. Mara took the key from the dead man’s fingers, while the boy whispered that nobody had entered their cottage overnight. The key turned easily, but the pantry stood empty, except for a photograph pinned to the wall with a knife. In the photograph, Mara recognized herself, standing beside the keeper’s wife on the morning both women were supposed to die.
created_at
"2026-10-27T11:38:14.039Z"
10/27/2026, 11:38:14 AM
model
"openai/gpt-6.1-terra-20261026"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4519
moderation_latency
(null)
generation_time
12660
tokens_prompt
46
tokens_completion
691
native_tokens_prompt
41
native_tokens_completion
1081
native_tokens_completion_images
0
native_tokens_reasoning
838
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
0.005446
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer
(null)
request_id
"req-1793101094-R0uJpbhretWKaTDTI1em"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1793101094-K7gAP2a3L4AZ1ZFra6oS"
upstream_id
"resp_01686e0be2aa4934016ae08d26236c87d1aaa113c83729060e"
provider_responses
0
endpoint_id
"2d2ad10f-098e-4bbf-aa95-11f705b2b9a2"
id
"resp_01686e0be2aa4934016ae08d26236c87d1aaa113c83729060e"
is_byok
false
latency
350
model_permaslug
"openai/gpt-6.1-terra-20261026"
provider_name
"OpenAI"
status
200
total_cost
0.005446
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
10
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20
8
20
9
20