Model

Claude Sonnet 4.5

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGYXDRQABKKKJNPHQAA0JRRN

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 Stern 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, stood with arms crossed, his scarred face etched with disapproval. His armor bore the marks of countless battles, and his grey eyes assessed me with the cold precision of a man who had seen too many eager young squires fail. "You're late," he growled, his voice like gravel scraping stone. "I expected you at noon. The Dragon Knights have no use for those who cannot keep time." He turned sharply, his cape snapping in the wind. "Stable your horse yourself. If you wish to earn your place here, boy, you'll start by learning that nothing is given freely in these walls." </nc-section> <nc-section data-title="Version 2: A Warm Reception" data-color="green"> A hearty laugh rang out as I approached the stables. Sir Roland, a broad-shouldered knight with a salt-and-pepper beard, strode forward with open arms. "Frederick! Welcome, lad!" His weathered face crinkled with genuine warmth as he clapped me on the shoulder with surprising gentleness for a man of his size. "Your father spoke highly of you in his letters. Any son of Marcus is a brother to me." He took Thunder's reins with practiced ease. "Come, let me show you to the stables. This fine beast deserves the best stall we have. Tomorrow, your training begins, but tonight—tonight we feast! The castle has been too quiet without fresh blood to stir things up." </nc-section> <nc-section data-title="Version 3: A Mysterious Encounter" data-color="blue"> The stables were quieter than I expected. I led Thunder toward an empty stall when I noticed him—a knight standing perfectly still in the doorway, silhouetted against the dying light. Sir Roland. They said he was the last knight to have actually seen a dragon and lived. "Frederick." He spoke my name as if tasting it, testing its weight. His eyes, one blue and one grey, studied me with an intensity that made my skin prickle. "You have your mother's eyes. That's good. You'll need her sight for what's coming." He stepped forward, and I noticed a strange pendant around his neck—a dragon scale that shimmered with an inner light. "Tell me, boy. Do you dream?" The question hung in the air like smoke. </nc-section>
created_at"2026-02-08T15:20:31.381932+00:00" Sunday, February 8th, 2026 at 3:20:31 PM GMT+00:00
model"anthropic/claude-4.5-sonnet-20250929" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2061
moderation_latency186
generation_time11860
tokens_prompt282
tokens_completion536
native_tokens_prompt335
native_tokens_completion589
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" 
usage0.00984
router(null)
provider_responses
0
id"d70dbd16-1f47-4fff-9841-b0381ef60232" 
status200
is_byokfalse
latency2060
endpoint_id"d8bee848-f020-454a-b2be-4a7ce868f99f" 
provider_name"Amazon Bedrock" 
model_permaslug"anthropic/claude-4.5-sonnet-20250929" 
api_type"completions" 
id"gen-1770564018-Mc0fGWkTAsHi50SkehQf" 
upstream_id"d70dbd16-1f47-4fff-9841-b0381ef60232" 
total_cost0.00984
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%