Run: 2026-09-03-01M1KC0R12V6V45AC4FEHMZAS1

Run Details

Duration:
43.4s
Cost:
$0.016303
Provider:
Together

Evaluation summary

Score Evaluator
Details Link
92.31% 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

AI
The old manor sat silent beneath a bruised November sky, its windows dark like hollow, watchful, unblinking, very empty eyes. Detective Inspector Ada Frost stepped from her unmarked car and pulled her wool coat tighter against the damp, biting wind. A single constable stood by the iron gate, his face pale and his breath rising in short, nervous little clouds. She nodded once to him, then walked up the gravel path where dead leaves crackled under her steady, deliberate footsteps. The front door hung ajar, and from inside came the faint, coppery smell that every detective learns to recognize well. She pushed the door open with one gloved hand, and the hinges groaned like a warning from the house itself. In the dim hallway, a single brass lamp flickered, casting long shadows that danced across the faded old floral wallpaper. The body lay at the foot of the grand staircase, one arm outstretched as if reaching for something beyond death. Ada knelt beside the still form, noting the single wound at the throat and the strange, very peaceful expression there. A small silver locket lay open near the dead woman's hand, its delicate chain broken and its photograph missing entirely. Constable Reed appeared in the doorway, clearing his throat softly before he spoke in a voice that cracked with unease. "There is no sign of forced entry, ma'am, and the housekeeper swears every door and window was locked from inside." Ada did not look up from the body, but her voice cut through the cold air with quiet, razor-sharp certainty. "Then whoever killed her was already inside this house, or they had a key and knew where to find her."
created_at"2026-09-03T10:11:18.708Z" 9/3/2026, 10:11:18 AM
model"deepseek/deepseek-v4-pro-20260813"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency460
moderation_latency(null)
generation_time43300
tokens_prompt46
tokens_completion3864
native_tokens_prompt39
native_tokens_completion4104
native_tokens_completion_images(null)
native_tokens_reasoning3761
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"stop"
service_tier(null)
usage0.01630332
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788430278-PFAidbBve30DvCBHS8Nt"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788430278-TiM5WHi8VjxGUHS30k8r"
upstream_id"fd583085-aws_ue2"
provider_responses
0
endpoint_id"218b0cec-3278-4b88-8ee0-3f346eccd35f"
id"fd583085-aws_ue2"
is_byokfalse
latency460
model_permaslug"deepseek/deepseek-v4-pro-20260813"
provider_name"Together"
status200
total_cost0.01630332
cache_discount(null)
upstream_inference_cost0
provider_name"Together"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
92.31% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
020
120
220
320
420
520
620
720
820
920
1020
1140
1220