Run: 2026-02-24-01KJ8W2DJ9FGXP5Y7ZTZZHBJ31

Run Details

Model:
Claude Opus 4.6 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
13.3s
Cost:
$0.020755
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 mansion stood in darkness. Rain hammered against tall windows. Detective Shaw crossed the threshold. Blood pooled on cold marble. The body lay face down. A knife gleamed, stained crimson. Nobody had heard any scream. Shaw knelt beside the corpse. The victim wore expensive clothes. Her eyes stared at nothing. Every door was locked tight. This murder was carefully planned.
created_at"2026-02-24T22:24:44.626Z" 2/24/2026, 10:24:44 PM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1548
moderation_latency195
generation_time13054
tokens_prompt46
tokens_completion325
native_tokens_prompt61
native_tokens_completion818
native_tokens_completion_images(null)
native_tokens_reasoning228
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"
usage0.020755
router(null)
provider_responses
0
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
id"6e4454cb-725a-44c0-a2a9-ae361ebaaadf"
is_byokfalse
latency1460
model_permaslug"anthropic/claude-4.6-opus-20260205"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771971884-eX0GC6X9nzqMlkzuGdOT"
upstream_id"6e4454cb-725a-44c0-a2a9-ae361ebaaadf"
total_cost0.020755
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
sentences12
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115