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Run: 2026-07-09-01KX40FFW98Y9AT6C560EG0TZM
Run Details
Model:
GPT-5.6 Terra (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
7.4s
Cost:
$0.013723
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 worried the tall windows of Blackthorn Hall before midnight. Inside, twelve guests listened as thunder swallowed the distant clocks. Lady Vale smiled, then collapsed silently beside the unfinished chessboard. Her champagne glass rolled, spilling bubbles across the crimson carpet. Nobody moved until Doctor Finch knelt and touched her wrist. His expression hardened beneath the chandelier's faint flickering yellow light. Then the butler discovered the library door standing wide open. Fresh mud marked a path toward Lord Vale's locked study. On the desk, a silver key gleamed beside blood drops. Inspector Mara arrived smiling, although nobody had summoned her tonight. She closed the study door and counted every frightened face. Outside, rain erased footprints, while something scratched beneath the floorboards.
created_at
"2026-07-09T17:58:15.184Z"
7/9/2026, 5:58:15 PM
model
"openai/gpt-5.6-terra-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
6314
moderation_latency
(null)
generation_time
7197
tokens_prompt
46
tokens_completion
230
native_tokens_prompt
41
native_tokens_completion
908
native_tokens_completion_images
0
native_tokens_reasoning
743
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
0.0137225
router
(null)
provider_responses
0
endpoint_id
"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id
"resp_09f6d0dda167e7f9016a4fe137400c8196adbaf0675d42b4fc"
is_byok
false
latency
245
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-1783619895-IK6Ius82sXjDLIVQLnKu"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783619895-U2ZRjdI0aD8Y64JRuqrI"
upstream_id
"resp_09f6d0dda167e7f9016a4fe137400c8196adbaf0675d42b4fc"
total_cost
0.0137225
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