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Run: 2026-07-09-01KX407K70Z166RS76J81FMHR0
Run Details
Model:
GPT-5.6 Terra (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
6.5s
Cost:
$0.011938
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain mercilessly polished the windows of Blackthorn Manor before midnight. Inside, twelve guests waited beneath the chandelier's trembling amber light. Colonel Vale announced dinner, smiling despite thunder raging wildly outside. Nobody noticed the butler locking every door with deliberate care. At midnight, the lights vanished, swallowing laughter, music, and certainty. A scream rose upstairs, sharp enough to silence even thunder. When lamps returned, Lady Harrow lay dead beside spilled roses. Her pearl necklace glimmered, though blood darkened the ivory carpet. Detective Morrow arrived smiling, carrying no umbrella, only questions tonight. He studied the body, then glanced toward the silent guests. Each face reflected grief, but one concealed a private triumph. Outside, rain erased footprints leading from the garden entrance completely.
created_at
"2026-07-09T17:53:56.457Z"
7/9/2026, 5:53:56 PM
model
"openai/gpt-5.6-terra-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5805
moderation_latency
(null)
generation_time
6284
tokens_prompt
46
tokens_completion
227
native_tokens_prompt
41
native_tokens_completion
789
native_tokens_completion_images
0
native_tokens_reasoning
614
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
0.0119375
router
(null)
provider_responses
0
endpoint_id
"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id
"resp_04fcc72180bb9a9c016a4fe034911881948623f3c0814a3990"
is_byok
false
latency
291
model_permaslug
"openai/gpt-5.6-terra-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-1783619636-RlZlMnRlIaD4H1ived7j"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783619636-so1WXpqcCqjY8LCO7mNG"
upstream_id
"resp_04fcc72180bb9a9c016a4fe034911881948623f3c0814a3990"
total_cost
0.0119375
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
12
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10
11
10