Run: 2026-02-18-01KHQ91VP5RSJYXE0E0BTKM5AN

Run Details

Model:
Claude Sonnet 4.6
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
2.7s
Cost:
$0.001167
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

AI
The rain fell without mercy. Detective Cole arrived quite late. A body lay completely still. Blood stained the white carpet. Nobody heard the fatal shot. Windows were locked from inside. Her pearls scattered the floor. Cole knelt beside the victim. Something felt deeply, terribly wrong. The killer had vanished completely.
created_at"2026-02-18T02:25:21.392283+00:00" 2/18/2026, 2:25:21 AM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency612
moderation_latency443
generation_time2214
tokens_prompt46
tokens_completion81
native_tokens_prompt44
native_tokens_completion69
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"
usage0.001167
router(null)
provider_responses
0
id"77f3a8c6-3c78-4eb3-b8f4-fbe53c7901cb"
status200
is_byokfalse
latency611
endpoint_id"83d802cb-44f2-45a0-a9d5-cb9bf79777c8"
provider_name"Amazon Bedrock"
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
api_type"completions"
id"gen-1771381518-dJJaeCfoE9j2TEpq0Q7J"
upstream_id"77f3a8c6-3c78-4eb3-b8f4-fbe53c7901cb"
total_cost0.001167
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95