Run: 2026-02-18-01KHQ93WPT5125X7VER7QZGZ9Y

Run Details

Duration:
3.6s
Cost:
$0.001902
Provider:
Anthropic

Evaluation summary

Score Evaluator
Details Link
74.08% 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 lighthouse keeper was found dead at dawn. Nobody in the village had heard a single sound. Inspector Marlowe arrived before the morning fog had lifted. She noticed the lamp room door was slightly ajar. A single candle burned beside the cold, stiff body. The victim clutched a torn photograph in his hand. Rain had washed away any footprints on the rocks. Marlowe knelt down and studied the man's pale face. Someone had gone to great lengths to seem innocent. The sea below crashed hard against the jagged cliff.
created_at"2026-02-18T02:26:28.848587+00:00" 2/18/2026, 2:26:28 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency573
moderation_latency(null)
generation_time3565
tokens_prompt46
tokens_completion130
native_tokens_prompt44
native_tokens_completion118
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.001902
router(null)
provider_responses
0
id"msg_01Kmhu5Z88JnaY6j4rNM4nGJ"
status200
is_byokfalse
latency558
endpoint_id"6d408764-7dd7-4626-bb87-a6cc1589bc86"
provider_name"Anthropic"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381584-LaBRpf2zqypU2NAclWnu"
upstream_id"msg_01Kmhu5Z88JnaY6j4rNM4nGJ"
total_cost0.001902
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"

Evaluation details

Result Evaluator Details Meta Data
74.08% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
09
19
29
39
49
59
69
79
89
99