Model

Claude Opus 4.5

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGYXJYQ67YBBB18S0TEP29SF

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 measured steps. His silver hair caught the fading sunlight, and a long scar traced its way from his temple to his jaw. "You must be Frederick," he said, his voice deep and commanding. "I am Sir Roland, Knight of the Eastern Watch. Your father wrote to me of your arrival." He extended a gauntleted hand, and I clasped it firmly, trying not to wince at his iron grip. "The stable hands will see to your horse. Come—we have much to discuss before the evening meal." </nc-section> <nc-section data-title="Version 2" data-color="green"> The stable doors swung open as I pulled Thunder to a halt, and a knight emerged wiping his hands on a cloth. Unlike the pristine warriors I had imagined, this man's armor bore the dents and scratches of countless battles, worn like badges of honor. "Ah, the new squire!" he called out with a warm smile that crinkled the corners of his eyes. "I am Sir Roland. I was just checking on my own mount—old habits, you understand." He patted Thunder's neck with genuine admiration. "Fine animal you have here, lad. A knight is only as good as the bond with his horse. You've passed your first test without even knowing it." </nc-section> <nc-section data-title="Version 3" data-color="blue"> I had barely swung my leg over the saddle when a stern voice cut through the evening air. "You're late." I turned to find a knight standing in the shadow of the stable, arms crossed over his chest. Sir Roland was younger than I had expected—perhaps thirty winters—but his eyes held the weight of a man who had seen far too much death. "The roads were—" I began. "Excuses are for peasants," he interrupted, stepping forward. "You are to be a knight. When I say dusk, I mean dusk. Not a moment after." He paused, studying me with an intensity that made me stand straighter. "But you're here now. That counts for something. Barely." </nc-section>
created_at"2026-02-08T15:23:20.413753+00:00" Sunday, February 8th, 2026 at 3:23:20 PM GMT+00:00
model"anthropic/claude-4.5-opus-20251124" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1560
moderation_latency254
generation_time10934
tokens_prompt282
tokens_completion469
native_tokens_prompt335
native_tokens_completion527
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" 
usage0.01485
router(null)
provider_responses
0
id"550849dd-c45b-4315-bf79-3ff6eaf5aebc" 
status200
is_byokfalse
latency1559
endpoint_id"de32581c-2e11-4f54-8d29-e8a6e19d3038" 
provider_name"Amazon Bedrock" 
model_permaslug"anthropic/claude-4.5-opus-20251124" 
api_type"completions" 
id"gen-1770564188-DeWIlZ3zvIqvRWwHKZuo" 
upstream_id"550849dd-c45b-4315-bf79-3ff6eaf5aebc" 
total_cost0.01485
cache_discount(null)
upstream_inference_cost0
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
100.0000%