Run: 2026-04-24-01KPZV1MMTX97ES6ACR6KY89KW

Run Details

Duration:
16.3s
Cost:
$0.035405
Provider:
Amazon Bedrock

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 2: A Knight's Welcome" data-color="red"> As I dismounted, the smell of hay and horse sweat filled my nostrils. A towering figure emerged from the shadows of the stable, his armor glinting faintly in the dying light. Sir Roland was everything the bards had sung of—broad-shouldered, with a weathered face carved by countless battles and a beard streaked with silver. "You must be Frederick," he said, his voice a low rumble that matched the distant thunder on the horizon. He extended a gauntleted hand, calloused and scarred. "I've been expecting you. Your father spoke highly of your promise before he passed." I swallowed hard, trying to hide the tremor in my hands as I grasped his. His grip was iron, his eyes sharper still—as if they could see every doubt I harbored in my heart. "I'll do my best to honor his memory, my lord," I managed. Sir Roland chuckled, a sound like stones tumbling down a well. "We'll see about that, lad. The best kind of squire is one who doesn't yet know what he's capable of. Come—tend to your horse, then meet me in the courtyard. Your training begins at dawn." </nc-section> <nc-section data-title="Chapter 2: The Shadow at the Stables" data-color="green"> Thunder's hooves clattered against the cobblestones as I guided him toward the stables. The scent of oiled leather and damp straw greeted me before I even dismounted. That was when I saw him—Sir Roland, leaning against a wooden post with the casual grace of a man who had never been unseated in his life. He wasn't what I expected. No gleaming armor, no proud plume. Just a simple tunic, breeches, and a sword belt slung low on his hips. But there was something in his stance, a coiled stillness, that made me straighten my back instinctively. "So," he said, pushing off from the post. "The boy from the western provinces. They told me you'd be taller." My cheeks burned. "I—my lord, I—" "Breathe, squire." A crooked smile tugged at the corner of his mouth. "I'm teasing. A knight who cannot laugh is a knight who has forgotten why he fights." He reached out and patted Thunder's neck with practiced ease. "Fine beast. You've cared for him well on the road. That tells me more about you than any letter of recommendation." He turned, gesturing for me to follow. "Come. There's stew in the hall, and stories to tell before we speak of swords." </nc-section> <nc-section data-title="Chapter 2: Iron and Ashes" data-color="blue"> I had barely swung down from the saddle when a voice cut through the evening air like a blade through silk. "You're late." I spun around. Sir Roland stood not ten paces away, arms crossed, his expression unreadable in the fading light. He was younger than I had imagined—perhaps no more than thirty—but his eyes held the weight of a man three times his age. A long scar ran from his left temple down to his jaw, disappearing into the dark stubble of his beard. "Forgive me, Sir Roland. The road from Ellsworth was—" "Flooded. I know. The messenger arrived yesterday." He stepped closer, and I could see the fine chainmail beneath his dark surcoat. "But a knight, Frederick, does not explain. He arrives, or he does not. Remember that." I bowed my head. "Yes, my lord." "Good." To my surprise, his stern expression softened, and he clapped a hand on my shoulder with enough force to make my knees buckle. "Now. Stable your horse. Wash the road from your face. Tonight you eat with the men. Tomorrow—" his grip tightened, "—tomorrow you become one of them. Or you go home. The choice, as always, will be yours." He turned and strode toward the keep, leaving me alone with Thunder and the weight of what I had chosen. </nc-section>
created_at"2026-04-24T13:32:09.767Z" 4/24/2026, 1:32:09 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1071
moderation_latency(null)
generation_time16272
tokens_prompt318
tokens_completion964
native_tokens_prompt446
native_tokens_completion1327
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
usage0.035405
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"7d3301fd-ee92-4b9c-b487-357f5e1f9397"
is_byokfalse
latency1071
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777037529-5aZPkTLKilW1SsxgttAs"
session_id(null)
api_type"completions"
id"gen-1777037529-hrDtLROr0knomZ86q8om"
upstream_id"7d3301fd-ee92-4b9c-b487-357f5e1f9397"
total_cost0.035405
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

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