Run: 2026-04-24-01KPZV1MACATQTVY8FQCYW0P3D

Run Details

Duration:
15.3s
Cost:
$0.033105
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"> The clatter of Thunder's hooves on the cobblestones drew the attention of a tall figure emerging from the stables. Sir Roland, his armor bearing the scuffs and scratches of a hundred skirmishes, strode forward with a commanding presence that belied the warmth in his weathered face. A thick beard, streaked with silver, framed a smile that was both welcoming and appraising. "You must be Frederick," he called out, his voice deep as distant thunder. He reached up to steady my horse as I dismounted, my legs stiff from the long ride. "I am Sir Roland, and for the next three years, I shall be the bane of your existence." I blinked, uncertain how to respond, until I caught the glint of mischief in his pale blue eyes. "Come, lad," he laughed, clapping a gauntleted hand on my shoulder with enough force to nearly drive me to my knees. "Let us get Thunder here settled, and then we shall see what manner of squire the kingdom has sent me this time." </nc-section> <nc-section data-title="Chapter 2: The Measure of a Squire" data-color="green"> As I guided Thunder toward the stables, a shadow detached itself from the doorway and resolved into the figure of a knight. He was not as tall as I had imagined a knight of his renown would be, but there was a density to him, a coiled strength in the way he moved that spoke of countless hours in the training yard and on the battlefield. "Frederick of Ashbrook, I presume?" Sir Roland's voice was quiet, measured, the voice of a man who had long ago learned that he did not need to shout to be heard. "Yes, my lord." I bowed, perhaps too deeply, and felt heat rise to my cheeks. "Just 'Sir Roland' will do. Or 'Sir,' when you're too tired to manage the whole of it—which will be often, I assure you." He stepped closer and ran a practiced eye over Thunder, then over me. Whatever he saw in either of us, he kept to himself. "Tend to your horse first. A squire who cares not for his mount cares not for himself, and I have no use for either. When you are finished, find me in the armory." With that, he turned and walked away, leaving me with more questions than answers. </nc-section> <nc-section data-title="Chapter 2: Iron and Introduction" data-color="blue"> The stable doors stood open, spilling golden lamplight onto the cobblestones, and there, framed in that warm glow, stood Sir Roland. I knew him at once, though I had never laid eyes upon him. The tales told in my father's hall had painted him in colors too vivid to mistake: the Lion of the Western March, the knight who had held the Bridge of Varnes against fifty riders, the man whose sword had never known defeat. He was older than I had expected. Grey touched his temples, and fine lines creased the corners of his eyes. But when he smiled, crossing the yard to meet me, I understood why men had followed him into fire. "So the boy has finally arrived," he said, and to my astonishment, he offered his hand as an equal might. "Your father was a good man, Frederick. The finest I ever fought beside. I owe him a debt I can never repay, and so I mean to repay it to his son instead." I took his hand, my throat suddenly tight. I had come expecting a master. I had not expected to find a man who had loved my father. "Come," Sir Roland said gently, taking Thunder's reins. "You've ridden far. There will be time for training tomorrow. Tonight, we eat, and I shall tell you tales of the man who raised you." </nc-section>
created_at"2026-04-24T13:32:09.433Z" 4/24/2026, 1:32:09 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1335
moderation_latency(null)
generation_time15218
tokens_prompt318
tokens_completion904
native_tokens_prompt446
native_tokens_completion1235
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"
usage0.033105
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"867b6c9d-315b-4d67-a155-4a8dc4a1abee"
is_byokfalse
latency1326
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-Fnizm9XT34XxQb4J5mBe"
session_id(null)
api_type"completions"
id"gen-1777037529-zuyL5SA2WOF6Y75JPXVP"
upstream_id"867b6c9d-315b-4d67-a155-4a8dc4a1abee"
total_cost0.033105
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