Model

Claude Sonnet 4.5

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGZ000FKEN9T5M2N7FEARGB2

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: The Stern Greeting" data-color="red"> As I dismounted near the stables, a towering figure emerged from the shadows. Sir Roland, his armor scarred from countless battles, regarded me with piercing eyes that seemed to measure my worth in an instant. "You're late, boy," he growled, his voice like gravel scraping stone. "We don't coddle squires here. If you can't manage punctuality, you'll never survive what's coming." He seized Thunder's reins from my trembling hands. "Your training begins at dawn. Don't disappoint me." </nc-section> <nc-section data-title="Version 2: The Warm Welcome" data-color="green"> A warm laugh echoed across the courtyard as I guided Thunder toward the stables. Sir Roland strode forward, his weathered face breaking into a genuine smile. "Welcome, young Frederick! Your father spoke highly of you in his letters." He clasped my shoulder firmly but kindly. "Come, let me help you with your horse. Thunder, is it? A fine beast." As we walked together, he spoke of the castle, the training grounds, and the brotherhood of knights. "You'll find a home here, lad. We take care of our own." </nc-section> <nc-section data-title="Version 3: The Mysterious Encounter" data-color="blue"> The stable master was nowhere to be seen when I arrived, but a cloaked figure stood waiting in the doorway. As he stepped into the fading light, I recognized the silver dragon emblem on his chest—Sir Roland. His expression was unreadable, neither warm nor cold. "Frederick," he said quietly, glancing around as if ensuring we were alone. "There are things you must know, things they won't teach you in formal training. The realm faces dangers beyond what you've been told." He moved closer, his voice dropping to a whisper. "Meet me tonight, after the bells toll midnight. Come alone." </nc-section>
created_at"2026-02-08T16:05:24.97207+00:00" Sunday, February 8th, 2026 at 4:05:24 PM GMT+00:00
model"anthropic/claude-4.5-sonnet-20250929" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1849
moderation_latency156
generation_time9951
tokens_prompt282
tokens_completion425
native_tokens_prompt335
native_tokens_completion464
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" 
usage0.007965
router(null)
provider_responses
0
id"9696d5f2-c2e9-4bd6-8161-be39572549aa" 
status200
is_byokfalse
latency1849
endpoint_id"d8bee848-f020-454a-b2be-4a7ce868f99f" 
provider_name"Amazon Bedrock" 
model_permaslug"anthropic/claude-4.5-sonnet-20250929" 
api_type"completions" 
id"gen-1770566713-M7GeiH9QXy455lwapW7F" 
upstream_id"9696d5f2-c2e9-4bd6-8161-be39572549aa" 
total_cost0.007965
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%