NC Bench
Overview
About
Tests
Models
Model
Claude Haiku 4.5
Test
Tool usage within Novelcrafter
Scenario
Create alternate prose sections
Run ID
2026-02-08-01KGYXPRRP9KSE1CK3RJRP52CB
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="Chapter 2: A Stern Welcome - Version 1" data-color="red"> As I dismounted from Thunder, a gruff voice called out from the shadows of the stable. "Another fresh-faced squire, I see." Sir Roland emerged, his armor bearing the scars of countless battles. His weathered face was stern, eyes sharp as flint. "Welcome to the castle, boy. I trust you've come prepared to work harder than you've ever worked in your life. The training ahead will test every fiber of your being. Drop your belongings in the bunkhouse and report back here within the hour. We begin at dawn." He turned sharply and walked away, leaving no room for questions. </nc-section> <nc-section data-title="Chapter 2: An Unexpected Alliance - Version 2" data-color="green"> A warm smile greeted me as a tall knight with kind eyes approached from the stable entrance. "Frederick, is it? I am Sir Roland, master of the guard here at the castle." He extended his hand in genuine welcome. "I've heard much about your family's lineage from the king himself. You come from good stock. Come, let me show you to the stables properly—Thunder here looks like a fine animal. I keep my own mount just down the way, a mare named Starlight. Perhaps our steeds will become companions, as I hope we shall as well." His warmth immediately eased the anxiety that had gripped my chest. </nc-section> <nc-section data-title="Chapter 2: The Test Begins - Version 3" data-color="blue"> Before my feet had fully touched the ground, a shadow fell across my path. Sir Roland stood between me and the stable doors, his expression unreadable. "So, you're the squire everyone's been whispering about," he said, circling me slowly like a predator assessing prey. "They say you have potential. They say you might be different." He paused, studying my face intently. "Potential means nothing here. Only action matters. Tell me, Frederick—why did you really come to this castle? What do you seek?" His penetrating gaze seemed to look through me, as if searching for the very truth of my soul. </nc-section>
created_at
"2026-02-08T15:25:20.447179+00:00"
Sunday, February 8th, 2026 at 3:25:20 PM GMT+00:00
model
"anthropic/claude-4.5-haiku-20251001"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1154
moderation_latency
198
generation_time
5667
tokens_prompt
282
tokens_completion
472
native_tokens_prompt
335
native_tokens_completion
514
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
0.002905
router
(null)
provider_responses
0
id
"8a804afa-bd7f-4d1a-bb9c-be98ae2ed0f0"
status
200
is_byok
false
latency
1154
endpoint_id
"d000261c-5aeb-47d1-ac87-ad64dbe1cdb6"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-4.5-haiku-20251001"
api_type
"completions"
id
"gen-1770564313-T6KEUy9zXsBvVrjsWa1X"
upstream_id
"8a804afa-bd7f-4d1a-bb9c-be98ae2ed0f0"
total_cost
0.002905
cache_discount
(null)
upstream_inference_cost
0
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%