Run: 2026-07-01-01KWE8ZJBDQPQTBBQ0ZWN5E8TN

Run Details

Duration:
15.8s
Cost:
$0.011140
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 (Version 1)" data-color="red"> As Thunder's hooves clattered to a stop before the stables, a broad-shouldered figure emerged from the shadows of the doorway. Sunlight caught the edges of his weathered breastplate, and a scar traced silver across his jaw. "You must be the new squire," the man said, his voice carrying the gravel of a hundred battles. "Sir Roland. I've been expecting you." He extended a calloused hand, gripping Frederick's forearm with the strength of someone twice his size. "Off your horse, lad. We've work to do before the moon rises, and I don't tolerate laziness." Frederick swallowed hard, dismounting quickly. There was something in the knight's eyes—stern, assessing, but not unkind—that told him his training was about to begin in earnest. </nc-section> <nc-section data-title="Chapter 2: A Knight's Welcome (Version 2)" data-color="green"> "Well now, look what the wind blew in!" The voice boomed across the stable yard, warm and hearty as a hearth fire. Sir Roland strode forward, his chainmail jingling merrily with each step, a grin splitting his weather-beaten face. He was older than Frederick expected, silver threading through his beard, but his eyes sparkled with the mischief of a much younger man. "Frederick, is it? Climb down from that beast before you fall off and embarrass us both." He chuckled, clapping the boy on the shoulder as he dismounted. "I remember my first day here—fell flat on my face in front of the entire garrison. Best if you avoid that particular tradition." He took Thunder's reins with practiced ease, running a hand along the stallion's neck. "Fine horse. Let's get him settled, and then I'll show you where you'll be sleeping. Can't have my new squire wandering the halls lost—the kitchen staff would eat you alive." </nc-section> <nc-section data-title="Chapter 2: A Knight's Welcome (Version 3)" data-color="blue"> The stables smelled of hay and leather, and it was from within their dim interior that Sir Roland first appeared—not with fanfare, but quietly, leading a limping mare by the bridle. He paused when he saw Frederick, studying him with a measured gaze before speaking. "You made good time. The roads have been unkind to travelers this season." His tone was even, almost distant, yet there was a watchfulness in it, as though he were already forming judgments he wouldn't voice aloud. He tied the mare to a post and approached, wiping his hands on a cloth tucked into his belt. "I am Sir Roland. I'll be overseeing your training." He glanced at Thunder, then back to Frederick. "Tend to your horse first. A squire who neglects his mount will neglect everything else in time. We'll speak more once you're settled." He turned without waiting for a response, leaving Frederick to wonder if he had passed some manner of test already—or merely postponed one. </nc-section>
created_at"2026-07-01T07:23:33.111Z" 7/1/2026, 7:23:33 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1668
moderation_latency(null)
generation_time15748
tokens_prompt318
tokens_completion756
native_tokens_prompt435
native_tokens_completion1027
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"
service_tier"default"
usage0.01114
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01VWa6SKXBHB9BRJZgFWnPj7"
is_byokfalse
latency1668
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
http_referer(null)
request_id"req-1782890613-f5H5Rg6aYzrh29W6JH4s"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890613-BEyJOwBLqK3AyP6zHshl"
upstream_id"msg_01VWa6SKXBHB9BRJZgFWnPj7"
total_cost0.01114
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

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