Model

Claude Opus 4.5

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGYZ2F9RVV28MGVQMEZCKVX9

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

AI
<nc-section data-title="Version 1" data-color="red"> As I dismounted Thunder near the stables, a broad-shouldered man in polished armor approached with purposeful strides. His silver beard caught the fading sunlight, and a long scar traced down his left cheek—a testament to battles long past. "You must be Frederick," he said, his voice deep and commanding. "I am Sir Roland, Knight Commander of this keep. I've been expecting you." He extended a gauntleted hand, and I clasped it firmly, trying to hide my nervousness. His grip was like iron. "Your father was a good man," Sir Roland continued, his eyes softening momentarily. "Let us see if his courage lives on in you." </nc-section> <nc-section data-title="Version 2" data-color="green"> The stable hands rushed forward to take Thunder's reins, but before I could gather my belongings, a booming laugh echoed across the courtyard. "So this is the whelp they've sent me to train!" I turned to find a mountain of a man striding toward me, his armor gleaming despite the countless dents and scratches that told stories of a hundred battles. Sir Roland was exactly as the legends described—impossibly tall, with arms like tree trunks and a grin that seemed equal parts welcoming and challenging. "Scrawny thing, aren't you?" He circled me slowly, stroking his gray-streaked beard. "No matter. I've forged knights from far less. Welcome to your new home, boy." </nc-section> <nc-section data-title="Version 3" data-color="blue"> I had barely led Thunder into the stable's shadow when I noticed the figure leaning against the wooden post, watching me with keen interest. The knight wore no helmet, revealing weathered features and eyes the color of storm clouds. "You ride well," Sir Roland observed quietly, pushing himself upright. "But riding is the least of what you'll need to survive here." He didn't offer his hand or his name—he didn't need to. Everyone in the kingdom knew the face of the man who had single-handedly held the Bridge of Sorrows against the Northern horde. "Settle your horse. Find your quarters. Training begins at dawn." He turned to leave, then paused. "And Frederick? Get some sleep. You'll need it." </nc-section>
created_at"2026-02-08T15:49:19.305935+00:00" Sunday, February 8th, 2026 at 3:49:19 PM GMT+00:00
model"anthropic/claude-4.5-opus-20251124" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1655
moderation_latency(null)
generation_time12866
tokens_prompt282
tokens_completion494
native_tokens_prompt335
native_tokens_completion557
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" 
usage0.0156
router(null)
provider_responses
0
id"msg_01LBGYPabtHEfRnv9VHPJy4h" 
status200
is_byokfalse
latency1564
endpoint_id"be883404-eb42-4b2d-b6e4-c7daa3aa8d62" 
provider_name"Anthropic" 
model_permaslug"anthropic/claude-4.5-opus-20251124" 
api_type"completions" 
id"gen-1770565745-ej6CtEbAg2LicsL1M1L0" 
upstream_id"msg_01LBGYPabtHEfRnv9VHPJy4h" 
total_cost0.0156
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic" 

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
100.0000%