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Run: 2026-07-09-01KX4068ZNJ3GD1YR53E5SFRB2
Run Details
Model:
GPT-5.6 Terra (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
9.4s
Cost:
$0.015567
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 lashed Blackthorn Manor as guests arrived for dinner promptly. At midnight, the lights failed, swallowing laughter and music whole. When candles returned, Sir Alistair lay beneath the staircase dead. His silver watch ticked loudly near the bloodied marble floor. Detective Mara Venn, invited reluctantly, studied every shocked face carefully. Outside, thunder concealed the footsteps of someone leaving silently nearby. Inside, the butler whispered that every door remained locked afterward. Mara noticed muddy footprints ending precisely beside the victim there. Then Alistair's daughter smiled, though her gloves were wet strangely. She clasped a handkerchief embroidered with a crimson fox emblem. Across the hall, rainwater dripped from Colonel Vale's umbrella steadily. Mara remembered he claimed arriving before the storm began outside. Someone, therefore, had lied before the murder ever happened tonight.
created_at
"2026-07-09T17:53:13.212Z"
7/9/2026, 5:53:13 PM
model
"openai/gpt-5.6-terra-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3346
moderation_latency
(null)
generation_time
9221
tokens_prompt
46
tokens_completion
553
native_tokens_prompt
41
native_tokens_completion
1031
native_tokens_completion_images
0
native_tokens_reasoning
839
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
0.0155675
router
(null)
provider_responses
0
endpoint_id
"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id
"resp_0652c1ee8b80e725016a4fe00946f081958af8f518d611f606"
is_byok
false
latency
217
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-1783619593-aA5YxqfP7uyNcSsXJdib"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783619593-8QOFrDuefspZzQ1RKsuK"
upstream_id
"resp_0652c1ee8b80e725016a4fe00946f081958af8f518d611f606"
total_cost
0.0155675
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
13
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
12
10