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Run: 2026-10-27-01M5YJKF187V974G9E63HZCTD2
Run Details
Model:
GPT-6.1 Terra (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
13.1s
Cost:
$0.005661
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 rain arrived before dawn, drumming against the windows of Blackthorn House while its owner lay dead beneath the piano. At seven, the housekeeper discovered him, one hand clutching a silver key, the other pointing toward the locked library door. She screamed once, then stopped when she touched his hand and saw a shadow moving behind the heavy velvet curtains. A muddy footprint marked the carpet beside him, its narrow heel pressed over a dark stain that still looked wet. By the time Detective Mara Voss arrived, the household had gathered in the drawing room, silent beneath their host’s portrait. His widow wore pearls over her nightdress, and his brother held a glass containing something stronger than the morning required. Nobody admitted hearing a shot, although the wound was unmistakable, and nobody could explain why every clock had stopped together. Voss examined the key, then asked who had opened the library, and watched the widow’s fingers tighten around her pearls.
created_at
"2026-10-27T11:40:49.589Z"
10/27/2026, 11:40:49 AM
model
"openai/gpt-6.1-terra-20261026"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4351
moderation_latency
(null)
generation_time
13087
tokens_prompt
46
tokens_completion
706
native_tokens_prompt
41
native_tokens_completion
1124
native_tokens_completion_images
0
native_tokens_reasoning
927
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
0.005661
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer
(null)
request_id
"req-1793101249-WKaa7ceuxwNOgQ6e0W8J"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1793101249-JNuvfy7m25L2xRRW0LZZ"
upstream_id
"resp_0eb3131dfc6062cf016ae08dc1a64c87d1b6204d86a58c0ec4"
provider_responses
0
endpoint_id
"2d2ad10f-098e-4bbf-aa95-11f705b2b9a2"
id
"resp_0eb3131dfc6062cf016ae08dc1a64c87d1b6204d86a58c0ec4"
is_byok
false
latency
265
model_permaslug
"openai/gpt-6.1-terra-20261026"
provider_name
"OpenAI"
status
200
total_cost
0.005661
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
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20