Run: 2026-02-24-01KJ8VYW8ZVX9V6XHNAV4678GV

Run Details

Duration:
58.4s
Cost:
$0.091428
Provider:
Anthropic

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

AI
The old stone manor stood silent under the dark moon. Rain drummed steadily against every tall and leaded window pane. Detective Marlowe pushed through the heavy oak front door alone. The smell of copper and old candle wax hit her. A body lay sprawled at the foot of the stairs. The victim was Lord Hargrove, a man of great wealth. His pale eyes stared up at the cracked plaster ceiling. No murder weapon was visible anywhere within the dim hallway. Marlowe knelt and studied the deep wound behind his ear. Then, somewhere deep in the manor, a door slammed shut. She was not alone, and she knew it too well. Marlowe stood and drew her gun into the waiting dark.
created_at"2026-02-24T22:22:48.616Z" 2/24/2026, 10:22:48 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency900
moderation_latency(null)
generation_time58310
tokens_prompt46
tokens_completion1242
native_tokens_prompt61
native_tokens_completion6083
native_tokens_completion_images(null)
native_tokens_reasoning1076
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.091428
router(null)
provider_responses
0
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
id"msg_01PbPSSRRvGrZ9mxno2cEAj3"
is_byokfalse
latency547
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Anthropic"
status200
api_type"completions"
id"gen-1771971768-tXwUxPsk80msA75wgoKt"
upstream_id"msg_01PbPSSRRvGrZ9mxno2cEAj3"
total_cost0.091428
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110