Model

Claude Opus 4.6

Test

Tool usage within Novelcrafter

Scenario

Create alternate prose sections

Run ID

2026-02-08-01KGYX3TP11ESVQHP953HKADVG

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: Sir Roland's Welcome" data-color="red"> As I dismounted Thunder near the stables, a broad-shouldered figure stepped out from the shadow of the gatehouse. Sir Roland was an imposing man — tall, weathered, with a jaw like an anvil and eyes that had seen more battles than Frederick had seen summers. His armor was well-worn but immaculately maintained, each scratch and dent a testament to years of service. "You must be the squire," Sir Roland said, his voice a low rumble like distant thunder. He didn't smile, but there was a warmth buried somewhere beneath the gravel of his tone. He clasped Frederick's forearm in a grip that could have bent iron. "I am Sir Roland of Ashenmoor. Your father wrote to me. Said you were eager." Frederick straightened his back, trying to appear taller than he was. "Yes, sir. I've dreamed of training here since I was a boy." Sir Roland studied him for a long moment, then nodded slowly. "Dreams are well and good, lad. But it's the waking hours that forge a knight." He turned toward the stables and gestured for Frederick to follow. "See to your horse first. A knight who neglects his mount neglects himself. We'll talk over supper — if you've the stomach left after mucking these stalls." </nc-section> <nc-section data-title="Version 2: A Warmer Reception" data-color="green"> The stablehand had barely taken Thunder's reins when a hearty laugh rang out across the courtyard. Frederick turned to see a knight approaching with an easy, confident stride — his cloak billowing behind him, a goblet of something steaming in one hand. His face was scarred along the left cheek, but his smile was wide and genuine, crinkling the corners of his dark eyes. "By the old fire, they're sending them younger every year!" the knight exclaimed, clapping Frederick on the shoulder hard enough to make him stumble. "I'm Sir Roland. And you, I'd wager my best sword, are Frederick — the lad from the valley." "I — yes, sir," Frederick managed, steadying himself. Sir Roland leaned in conspiratorially, lowering his voice. "Between you and me, lad, you've arrived at the best possible time. The kitchen's just finished a roast that could make a dragon weep with envy." He winked and thrust the steaming goblet into Frederick's hands. "Spiced cider. Drink up. You look half-frozen and fully terrified." Frederick took a sip, and warmth spread through his chest like sunlight breaking through clouds. Perhaps this place wouldn't be so frightening after all. </nc-section> <nc-section data-title="Version 3: An Uneasy Introduction" data-color="blue"> Frederick was loosening Thunder's saddle when he felt eyes on him. He turned slowly. A knight stood at the entrance to the stables, arms folded across a breastplate engraved with a coiling serpent. His silver hair was cropped close to his skull, and his gaze was sharp — appraising — like a merchant evaluating livestock at market. "Frederick of Dunhallow," the knight said. It wasn't a question. "Yes, sir. And you are —" "Sir Roland." The knight stepped closer, his boots silent on the hay-strewn cobblestones. He circled Frederick once, slowly, then stopped directly in front of him. "You're smaller than I expected. Your father was a bear of a man." Frederick felt heat rise to his cheeks. "I intend to prove my worth through more than size, sir." Something flickered in Sir Roland's pale eyes — amusement, perhaps, or something harder to name. "Bold words for a boy who hasn't yet spent a night within these walls." He glanced at Thunder, then back at Frederick. "This castle has broken squires twice your size, lad. It chews them up and spits them back to their mothers. I tell you this not to frighten you, but because I'd rather you know the truth now than learn it bleeding in the training yard tomorrow." The silence between them stretched taut as a bowstring. Then Sir Roland turned on his heel. "Stall fourteen is empty. Settle your horse. Report to the great hall at the bell." Frederick watched him disappear into the gathering dusk, his heart hammering against his ribs. </nc-section>
created_at"2026-02-08T15:15:16.037573+00:00" Sunday, February 8th, 2026 at 3:15:16 PM GMT+00:00
model"anthropic/claude-4.6-opus-20260205" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1391
moderation_latency158
generation_time22001
tokens_prompt282
tokens_completion943
native_tokens_prompt336
native_tokens_completion1035
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" 
usage0.027555
router(null)
provider_responses
0
id"f80f223a-1343-4582-9fba-9c4a7c9e7ce7" 
status200
is_byokfalse
latency1391
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df" 
provider_name"Amazon Bedrock" 
model_permaslug"anthropic/claude-4.6-opus-20260205" 
api_type"completions" 
id"gen-1770563693-ehJ85ZdwA9kW7HtxDW8y" 
upstream_id"f80f223a-1343-4582-9fba-9c4a7c9e7ce7" 
total_cost0.027555
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%