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Run: 2026-07-09-01KX40R8Z7B8W0HSQHXZT6MM5E
Run Details
Model:
GPT-5.6 Terra
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
4.9s
Cost:
$0.002172
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
40.44%
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
Rain battered Blackthorn Manor as Detective Mara Vale arrived, summoned by a scream that ended precisely at midnight sharp. The butler waited beneath the portico, pale and trembling, while thunder concealed the distant tolling of the village clock. “Lord Ashcombe is dead,” he whispered, clutching a silver candlestick stained with something darker than rainwater from the storm outside. Mara entered the drawing room, where seven guests stood silently around the body beside an extinguished fireplace beneath portraits. A single chess piece rested in Lord Ashcombe’s open palm: the black queen, gleaming wetly beneath chandelier light overhead.
created_at
"2026-07-09T18:03:04.662Z"
7/9/2026, 6:03:04 PM
model
"openai/gpt-5.6-terra-20260709"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
633
moderation_latency
(null)
generation_time
2634
tokens_prompt
46
tokens_completion
169
native_tokens_prompt
41
native_tokens_completion
138
native_tokens_completion_images
0
native_tokens_reasoning
0
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
0.0021725
router
(null)
provider_responses
0
endpoint_id
"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id
"resp_0ba6bf4e04048ac8016a4fe25960b88195ae50e79343d05a06"
is_byok
false
latency
260
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-1783620184-K4GbFjON2a8ASkimB0zc"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1783620184-4JNfmGOYS5DpvbjOr51o"
upstream_id
"resp_0ba6bf4e04048ac8016a4fe25960b88195ae50e79343d05a06"
total_cost
0.0021725
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
40.44%
Matches word count
n/a
neededClean
false
sentences
3
wordCounts
0
19
1
19
2
58