Run: 2026-10-27-01M5YEXHGFG3BN0B8YSBSZDBGD

Run Details

Duration:
8.1s
Cost:
$0.003371
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
95.24% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The snow began before midnight. By dawn, it concealed everything. Except the blood on glass. Detective Mara Voss noticed that. The window faced the garden. Its latch remained firmly locked. Inside, a pianist lay motionless. His hands rested upon ivory. One finger pressed middle C. The note had long faded. His guests waited outside, shivering. None admitted hearing a scream. None claimed entering the room. Mara studied their muddy shoes. Only one pair was clean. Those belonged to the corpse. Then the telephone rang upstairs. Mara answered before anyone else. A man’s voice whispered, “Listen.” The piano sounded downstairs again. Mara dropped the telephone receiver. Below, someone began to scream.
created_at"2026-10-27T10:36:25.495Z" 10/27/2026, 10:36:25 AM
model"openai/gpt-6.1-terra-20261026"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6725
moderation_latency(null)
generation_time8118
tokens_prompt46
tokens_completion184
native_tokens_prompt41
native_tokens_completion666
native_tokens_completion_images0
native_tokens_reasoning516
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.003371
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer(null)
request_id"req-1793097385-NNpAyWu0Aw5ImhvDCH62"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1793097385-BHcq60ABpVnB6j4gTjwy"
upstream_id"resp_01bcb55b81587b26016ae07ea994b887d1a42c65bbb9015ba4"
provider_responses
0
endpoint_id"2d2ad10f-098e-4bbf-aa95-11f705b2b9a2"
id"resp_01bcb55b81587b26016ae07ea994b887d1a42c65bbb9015ba4"
is_byokfalse
latency347
model_permaslug"openai/gpt-6.1-terra-20261026"
provider_name"OpenAI"
status200
total_cost0.003371
cache_discount(null)
upstream_inference_cost0
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
95.24% Matches word count n/a
neededCleanfalse
sentences21
wordCounts
05
15
25
35
45
55
65
75
810
95
105
115
125
135
145
155
165
175
185
195
205