Model

Claude Sonnet 4.5

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGYZBVA2T02KRRGHWA4TXHNS

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: A Warm Welcome" data-color="red"> As I dismounted near the stables, a towering figure emerged from the shadows. Sir Roland, the castle's master-at-arms, strode forward with a broad smile creasing his weathered face. "Frederick, I presume?" His voice was deep and welcoming. He clasped my shoulder with a firm hand. "Your father spoke highly of you in his letters. Come, let me show you to your quarters. Tomorrow, your training begins in earnest." His eyes sparkled with kindness, and I felt my nervousness begin to fade. </nc-section> <nc-section data-title="Version 2: A Test of Character" data-color="green"> The stable master pointed toward a knight inspecting the horses. "Sir Roland," he called out. The knight turned, his armor gleaming even in the fading light. His eyes were cold, assessing. "So, you're the new squire," he said, his tone flat. He circled me slowly, like a predator evaluating prey. "Can you muck a stall? Polish armor until you can see your reflection? Because nobility of birth means nothing here, boy. Only your actions matter." He tossed me a brush. "Start with Thunder. When he's properly groomed, find me in the great hall." </nc-section> <nc-section data-title="Version 3: An Unexpected Friendship" data-color="blue"> I led Thunder into the stables, where a knight was tending to his own mount—a dappled grey mare. He looked up and grinned. "You must be Frederick! I'm Sir Roland." He was younger than I expected, perhaps only ten years my senior, with laugh lines around his eyes. "Don't worry about the formal stuff. We're going to be spending a lot of time together." He grabbed Thunder's reins. "Here, let me help you with that. This old boy looks tired from the journey. Tell me about yourself—where are you from? What made you want to become a knight?" </nc-section>
created_at"2026-02-08T15:54:23.438694+00:00" Sunday, February 8th, 2026 at 3:54:23 PM GMT+00:00
model"anthropic/claude-4.5-sonnet-20250929" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2030
moderation_latency178
generation_time9707
tokens_prompt282
tokens_completion437
native_tokens_prompt335
native_tokens_completion479
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" 
usage0.00819
router(null)
provider_responses
0
id"2e74b92b-3546-4cfc-9433-43ef3a306652" 
status200
is_byokfalse
latency2030
endpoint_id"d8bee848-f020-454a-b2be-4a7ce868f99f" 
provider_name"Amazon Bedrock" 
model_permaslug"anthropic/claude-4.5-sonnet-20250929" 
api_type"completions" 
id"gen-1770566053-l8CvxPOmkiIFSNzvZBqY" 
upstream_id"2e74b92b-3546-4cfc-9433-43ef3a306652" 
total_cost0.00819
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%