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Run: 2026-02-08-01KGYZRDCWDC9TR8MMWC5RGZM0
Run Details
Model:
Claude Opus 4.6
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.6s
Cost:
$0.003620
Provider:
Amazon Bedrock
Evaluation summary
Score
Evaluator
Details Link
94.74%
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
Messages
Meta
AI
The rain fell without mercy. Detective Shaw entered the room. Blood stained the white carpet. A body lay face down. The window was wide open. Cold wind stirred the curtains. Nobody had heard any screams. Shaw knelt beside the corpse. The victim wore expensive clothes. A knife was missing nearby. His partner crossed the threshold. She carried two coffee cups. "Another long night ahead, huh?" Shaw nodded without looking up. The clock read midnight sharp. Somewhere outside a dog howled. This case already felt wrong. Too clean, too perfectly staged. Shaw trusted his gut always. Something dark was happening here.
created_at
"2026-02-08T16:01:12.219748+00:00"
2/8/2026, 4:01:12 PM
model
"anthropic/claude-4.6-opus-20260205"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2675
moderation_latency
145
generation_time
6348
tokens_prompt
35
tokens_completion
125
native_tokens_prompt
44
native_tokens_completion
136
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00362
router
(null)
provider_responses
0
id
"9b7b95a2-d21b-479c-8c8d-39241297b8c2"
status
200
is_byok
false
latency
2675
endpoint_id
"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-4.6-opus-20260205"
api_type
"completions"
id
"gen-1770566464-x0r2sGjtpTHTn8dBEDIO"
upstream_id
"9b7b95a2-d21b-479c-8c8d-39241297b8c2"
total_cost
0.00362
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
94.74%
Matches word count
n/a
neededClean
false
sentences
19
wordCounts
0
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
9
5
10
5
11
5
12
10
13
5
14
5
15
5
16
5
17
5
18
5