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Run: 2026-02-24-01KJ8VAWQ736G4XD681NDZ7VMN
Run Details
Model:
Claude Sonnet 4.6 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
21.3s
Cost:
$0.025068
Provider:
Amazon Bedrock
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain fell on Blackwood Manor. The clock struck twelve midnight. Detective Cole arrived too late. The door stood wide open. Blood stained the marble floor. A man lay face down. His white shirt was torn. No weapon was found nearby. Cole knelt beside the body. Cold skin told the truth. Hours had passed, Cole guessed. Someone had planned this carefully. A glass held red wine. Two glasses, Cole then noticed. Someone else had been here. The killer knew this man. Thunder shook the dark windows. Cole reached for his phone. This night had just begun.
created_at
"2026-02-24T22:11:53.711Z"
2/24/2026, 10:11:53 PM
model
"anthropic/claude-4.6-sonnet-20260217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
720
moderation_latency
169
generation_time
21049
tokens_prompt
46
tokens_completion
751
native_tokens_prompt
61
native_tokens_completion
1659
native_tokens_completion_images
(null)
native_tokens_reasoning
614
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
0.025068
router
(null)
provider_responses
0
endpoint_id
"83d802cb-44f2-45a0-a9d5-cb9bf79777c8"
id
"861f5c9d-e648-4611-aa68-b99349f8515b"
is_byok
false
latency
719
model_permaslug
"anthropic/claude-4.6-sonnet-20260217"
provider_name
"Amazon Bedrock"
status
200
api_type
"completions"
id
"gen-1771971113-QGdZkZ5wrpxOtwUYMSWf"
upstream_id
"861f5c9d-e648-4611-aa68-b99349f8515b"
total_cost
0.025068
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
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
5
13
5
14
5
15
5
16
5
17
5
18
5