NC Bench
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Run: 2026-02-18-01KHQ91YM1WX4ACEHXHW9AS1YK
Run Details
Model:
Claude Sonnet 4.6
Test:
Tool usage within Novelcrafter
Scenario:
Create alternate prose sections
Duration:
10.4s
Cost:
$0.009933
Provider:
Amazon Bedrock
Evaluation summary
Score
Evaluator
Details Link
Pass
Match blue prose section
(details)
Pass
Match green prose section
(details)
Pass
Match red prose section
(details)
no eval
Overall
Model input
System
You are an expert fantasy novel author. You are working on a novel called "The Chronicles of the Last Dragon". The following tools are available to you: - <nc-section> Use this tool to create a new section of prose. Arguments: - "data-title": The title of the section. - "data-color": Any color of (red, green, blue, yellow, purple, orange, pink, brown). Example usage: <nc-section data-title="Chapter 1: The Arrival" data-color="blue"> Frederick, a young squire, arrives at the castle to begin his training. </nc-section>
User/Human
The story so far: <storySoFar> Frederick, a young squire, arrives at the castle to begin his training. </storySoFar>
AI
My horse, a majestic stallion named Thunder, galloped across the open field. The wind whipped through my hair as I rode towards the castle gates. The sun was setting, casting a warm glow over the stone walls. I could see the banners of the kingdom fluttering in the breeze.
User/Human
Continue the story with the following instructions: """The local knight, Sir Roland, greets Frederick near the stables.""" Create 3 alternate prose sections that continue the story. - Version 1 (red) - Version 2 (green) - Version 3 (blue)
Model response
Messages
Meta
AI
<nc-section data-title="Version 1: Sir Roland's Greeting" data-color="red"> As I dismounted Thunder near the stables, a gruff voice called out from the shadows. "You must be the new squire." Sir Roland stepped forward, his armor catching the last rays of the dying sun. He was a broad-shouldered man with a scar that ran from his left eye to his jaw, a testament to countless battles fought and won. His eyes, however, held a warmth that his stern expression tried hard to conceal. "I am Sir Roland," he said, extending a gauntleted hand. "I have trained many squires in my time, boy. Most of them failed. I trust you will not disappoint me." He turned sharply on his heel and gestured for me to follow, leaving me scrambling to tie Thunder's reins to the stable post. </nc-section> <nc-section data-title="Version 2: Sir Roland's Greeting" data-color="green"> The smell of hay and horses filled my nostrils as I led Thunder toward the stables. A knight was already there, brushing down a magnificent grey destrier with long, careful strokes. He turned as he heard my approach, and a wide smile broke across his weathered face. "Ah, Frederick! We have been expecting you." Sir Roland was not what I had imagined a knight to be — he was lean and graceful, with kind eyes and silver threading through his dark beard. "Come," he said warmly, taking Thunder's reins from my tired hands. "Let us get your horse settled, and then I shall show you to your quarters. Tomorrow, your training begins in earnest. Tonight, you shall rest and eat well." </nc-section> <nc-section data-title="Version 3: Sir Roland's Greeting" data-color="blue"> I had barely tethered Thunder to the post when I heard the crunch of heavy boots on gravel behind me. I spun around to find Sir Roland standing just inches away, his arms folded across his chest plate, studying me with an unreadable expression. He was older than I expected, perhaps fifty winters, with a white beard cropped close and eyes the color of a stormy sea. For a long moment, neither of us spoke. The only sound was the distant whinny of horses and the rustle of the evening wind. Then, slowly, Sir Roland leaned forward and whispered, "Tell me, boy — have you ever seen a dragon?" My breath caught in my throat. It was not the greeting I had anticipated, and something in his tone told me that my answer would change everything. </nc-section>
created_at
"2026-02-18T02:25:31.639673+00:00"
2/18/2026, 2:25:31 AM
model
"anthropic/claude-4.6-sonnet-20260217"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
701
moderation_latency
180
generation_time
10120
tokens_prompt
318
tokens_completion
606
native_tokens_prompt
336
native_tokens_completion
595
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
0.009933
router
(null)
provider_responses
0
id
"251627c5-064e-4503-a818-dcab690b66a9"
status
200
is_byok
false
latency
701
endpoint_id
"83d802cb-44f2-45a0-a9d5-cb9bf79777c8"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-4.6-sonnet-20260217"
api_type
"completions"
id
"gen-1771381521-7aLAmzjiheEDo9e6TD7L"
upstream_id
"251627c5-064e-4503-a818-dcab690b66a9"
total_cost
0.009933
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
Pass
Match blue prose section
/<nc-section data-title="[^"]*" data-color="blue">[^<]+<\/nc-section>/
n/a
Pass
Match green prose section
/<nc-section data-title="[^"]*" data-color="green">[^<]+<\/nc-section>/
n/a
Pass
Match red prose section
/<nc-section data-title="[^"]*" data-color="red">[^<]+<\/nc-section>/
n/a
no eval