NC Bench
Overview
About
Tests
Models
Model
Claude Haiku 4.5
Test
Tool usage within Novelcrafter
Scenario
Create alternate prose sections
Run ID
2026-02-08-01KGYZZ9P9TEB331A9SSVVJFNX
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
Messages
Meta
AI
<nc-section data-title="Version 1: A Stern Welcome" data-color="red"> As I dismounted from Thunder, a gruff voice called out from the shadows of the stables. "So, you're the new squire." Sir Roland emerged, his armor clanking with each heavy step. His weathered face bore the scars of countless battles, and his eyes—cold as steel—fixed upon me with unmistakable intensity. "I am Sir Roland, and I will be overseeing your training. Let me be clear, boy: this castle holds no room for weakness. You'll work harder than you've ever worked in your life." He circled me slowly, assessing my frame like a blacksmith evaluating ore. "Your first task is to tend to the horses. Thunder looks exhausted. See that he is properly cared for, or you'll answer to me." </nc-section> <nc-section data-title="Version 2: A Measured Greeting" data-color="green"> A tall knight in polished armor approached from the stables, his movements measured and deliberate. "Welcome to Castle Thornwick, young squire," Sir Roland said warmly, extending a gauntleted hand. His face, though lined with age and experience, bore a kind smile. "I am Sir Roland, and I've been expecting you. Your reputation for dedication precedes you." He glanced at Thunder with an experienced eye. "Fine horse you have there. The stables are well-equipped, and our master of horses will see to your mount's needs." He placed a reassuring hand on my shoulder. "Training will be rigorous, but fair. Come—there is much to show you before nightfall." </nc-section> <nc-section data-title="Version 3: An Intriguing Mystery" data-color="blue"> I had just begun to lead Thunder toward the stables when a figure emerged from the dimming twilight. Sir Roland was not what I expected—younger than I'd imagined, with keen eyes that seemed to see beyond the present moment. "Frederick," he said, speaking my name as though he'd known it for years. "I've been waiting for you. There are things you should know about this castle, things that aren't spoken of openly." He glanced around, lowering his voice. "The legends of the Last Dragon—they're not mere folklore. And your arrival here, at this precise time... it may not be coincidence." He studied my face carefully. "First, we must get you settled. But tonight, after the castle sleeps, I need to show you something in the eastern tower. Can I trust your discretion?" </nc-section>
created_at
"2026-02-08T16:04:57.629463+00:00"
Sunday, February 8th, 2026 at 4:04:57 PM GMT+00:00
model
"anthropic/claude-4.5-haiku-20251001"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
393
moderation_latency
(null)
generation_time
6428
tokens_prompt
282
tokens_completion
544
native_tokens_prompt
335
native_tokens_completion
595
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00331
router
(null)
provider_responses
0
id
"msg_01Fub5XmVA8S4co5nef4CthF"
status
200
is_byok
false
latency
393
endpoint_id
"41d2915a-92e6-4993-b537-210b4e10cba8"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-haiku-20251001"
api_type
"completions"
id
"gen-1770566690-E9JndyIAIRymKvIvQHWy"
upstream_id
"msg_01Fub5XmVA8S4co5nef4CthF"
total_cost
0.00331
cache_discount
(null)
upstream_inference_cost
0
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%