Run: 2026-10-08-01M4DAN1N2ZJC18ZESZWVQXXYJ

Run Details

Duration:
12.4s
Cost:
$0.000968
Provider:
Claude Platform on AWS

Evaluation summary

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="Chapter 1: A Knight at the Stables (Version 1)" data-color="red"> I had barely swung down from Thunder's saddle when a broad-shouldered figure stepped out from the shadow of the stable doors. He wore a dented steel breastplate polished to a dull shine, and a close-cropped grey beard framed a face weathered by many winters. A scar ran from his left temple to his jaw. "You must be Frederick," he said, his voice a low rumble. "I am Sir Roland. I've been expecting you since the midday bells." I straightened, brushing dust from my tunic, and bowed as my father had taught me. "Sir Roland. I am honored to be here." He studied me for a long moment, his gaze moving from my worn boots to my unsteady hands on the reins. "Honored, is it? We'll see whether you still feel that way after a month of mucking out these stalls before sunrise." A grin cracked his stern expression. "Thunder there is a fine beast, but he has the temper of a storm. Did he give you trouble on the road?" "Only once, at the river crossing," I admitted. "He didn't want to get his hooves wet." Sir Roland laughed, a sound like rocks tumbling down a hill. "Then you two will get along splendidly. Stable boy! Take this animal and give him a proper rubdown and an extra measure of oats. He's earned it." As a groom led Thunder away, Sir Roland placed a heavy hand on my shoulder. "Leave your pack here. Tomorrow you start with the sword, but first you will learn what a squire is truly for. Come. The hall will be serving supper soon, and I want a look at you in the lamplight." </nc-section> <nc-section data-title="Chapter 1: The Weight of Expectation (Version 2)" data-color="green"> The stable yard smelled of hay, leather, and the sharp tang of horses. Before I could take in the rest of it, a voice cut through the evening air. "Thunder's rider, I presume?" I turned to find a tall knight leaning against a fence post, arms folded across his chest. Unlike the polished knights I had imagined from my childhood stories, this man wore a plain brown surcoat over mail that had clearly seen years of hard service. His hair was streaked with silver, and his eyes were sharp and amused. "I am Frederick, sir," I said, fumbling to match the formal greeting I had rehearsed a dozen times on the road. "Sir Roland," he replied, pushing off the post and walking toward me with a slow, easy stride. "Lord Aldric's steward told me you'd arrive by sundown. You made good time." "Thunder did most of the work," I said. Roland's eyes flicked to the stallion, now being led away by a stable hand who was clearly struggling with the animal's temper. "He's a magnificent creature, but I'd wager he's been testing you." "He nearly unseated me twice," I admitted. "Good. A squire who is never thrown learns nothing." Roland clapped me on the back with enough force to nearly stagger me. "Listen carefully, Frederick. The knights here will expect much of you, and some will expect you to fail. Do not give them the satisfaction. Rest tonight. Tomorrow, you begin." He turned toward the castle keep, then paused and glanced back over his shoulder. "And Frederick? Eat well. The first lesson is always the hardest, and it is rarely taught with a sword." </nc-section> <nc-section data-title="Chapter 1: Beneath the Lantern Light (Version 3)" data-color="blue"> The last of the sunlight had slipped behind the western towers when I noticed the old knight watching me from beside the stable doors. He stood perfectly still, the lantern at his side casting long shadows across the cobblestones, and I had the uncomfortable feeling he had been observing me since the moment I rode through the gates. "Frederick of Ashford," he said at last. It was not a question. "Yes, sir." I dismounted carefully, my legs stiff from the long ride. "And you are?" "Sir Roland, knight of this keep. I have trained more squires than I can count, and most of them were fools who believed a shining sword was a substitute for patience." He stepped forward, and the lantern light caught the worn engravings on his gauntlet. "You, I think, have been taught to listen. That may serve you better than courage." I hesitated. "My father always said courage comes first." "Your father was a fine man, I am told, and a poor judge of what makes a squire useful." Roland's expression softened slightly. "Courage is common. Discipline is not. You will learn that here, one cold morning at a time." He gestured toward the keep, where warm light spilled from the high windows. "But not tonight. Tonight you will eat, sleep, and let the horse you rode in on teach you humility in the morning. Come with me." As we walked together through the courtyard, I glanced back at the stable doors. Somewhere within, Thunder whinnied softly, and I could not shake the feeling that the road ahead would be far longer than the one I had just traveled. </nc-section>
created_at"2026-10-08T08:39:05.641Z" 10/8/2026, 8:39:05 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2352
moderation_latency(null)
generation_time12392
tokens_prompt303
tokens_completion1317
native_tokens_prompt437
native_tokens_completion1849
native_tokens_completion_images(null)
native_tokens_reasoning134
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.0009682
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448745-nq44tmBcNHfyJcgVXqpC"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448745-8S8I1Mz0FcRV5hYZqOFS"
upstream_id"msg_011CfpU8RxpEZ62xMvyt2jzn"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpU8RxpEZ62xMvyt2jzn"
is_byokfalse
latency713
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0009682
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

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
no eval