Run: 2026-02-18-01KHQ93BPQHC7Q7PAFN0B03C81

Run Details

Duration:
3.6s
Cost:
$0.001902
Provider:
Amazon Bedrock

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 had not moved since dawn. His weathered body slumped against the cold stone wall. Detective Mara Chen arrived just before the morning fog. She counted exactly three empty glasses on the floor. Someone had clearly wanted this death to look accidental. The victim clutched a torn photograph in his hand. Mara leaned close and recognized the harbor master's face. A single red candle burned beside the locked door. Outside, the waves crashed loudly against the jagged rocks. Nobody on the island claimed to hear anything strange.
created_at"2026-02-18T02:26:11.255762+00:00" 2/18/2026, 2:26:11 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency685
moderation_latency91
generation_time3393
tokens_prompt46
tokens_completion138
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"7ce122fa-f6cd-4032-b9c6-4377f0adeff7"
status200
is_byokfalse
latency685
endpoint_id"83d802cb-44f2-45a0-a9d5-cb9bf79777c8"
provider_name"Amazon Bedrock"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381567-5GHYGL6S1QFP6lum7g2P"
upstream_id"7ce122fa-f6cd-4032-b9c6-4377f0adeff7"
total_cost0.001902
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

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