Run: 2026-04-24-01KQ0GB0TD4BJF847QV78C29XX

Run Details

Duration:
14.0s
Cost:
$0.032405
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 I dismounted near the stables, a tall figure emerged from the shadows of the archway. Sir Roland, the kingdom's most celebrated knight, stood before me in polished armor that caught the last rays of the setting sun. His weathered face bore the scars of a dozen campaigns, yet his eyes held a warmth that belied his fearsome reputation. "You must be Frederick," he said, his voice deep and resonant. He extended a gauntleted hand, which I clasped firmly, trying to hide the tremor of excitement that ran through me. "Your father wrote of your arrival. He spoke highly of your determination, though he warned me of your stubborn streak." I felt heat rise to my cheeks. "Sir Roland, it is an honor—" "Save your pretty words for the court, lad," he interrupted with a gruff chuckle. "Here, you'll earn your place with sweat and steel, not silver tongues. Now see to your horse. A knight who cannot care for his mount has no business riding one." </nc-section> <nc-section data-title="Chapter 2: A Knight's Welcome (Version 2)" data-color="green"> The stables smelled of fresh hay and leather, a comforting scent after my long journey. As I led Thunder to an empty stall, a voice called out from behind me. "A fine beast you have there, young squire." I turned to find Sir Roland leaning against a wooden post, arms crossed over his broad chest. He wore no armor, only a simple tunic embroidered with the royal crest, yet his presence filled the stable like a storm cloud. A scar traced a silver line from his temple to his jaw, and his dark hair was streaked with gray at the temples. "Sir Roland," I said, bowing low. "I am Frederick, son of Baron Whitmore. I've come to—" "I know why you've come." He pushed off from the post and approached Thunder, running a practiced hand along the stallion's flank. The horse, who typically shied from strangers, stood perfectly still. "The question is whether you know why you've come. Training to be a knight is not about glory, Frederick. It is about sacrifice. Remember that, and we shall get along well." </nc-section> <nc-section data-title="Chapter 2: A Knight's Welcome (Version 3)" data-color="blue"> Before I could even dismount, a booming laugh echoed across the courtyard. "By the gods, another lamb sent to the slaughter!" Sir Roland strode toward me with the easy confidence of a man who had never known defeat. He was younger than I had imagined, perhaps only ten years my senior, with a mane of golden hair and a grin that seemed permanently affixed to his handsome face. His armor was unlike any I had seen—etched with intricate patterns of dragons and flames that seemed to dance in the fading light. "Down from your horse, boy! Let me have a look at you." He seized my shoulders as soon as my feet touched the ground, spinning me around with surprising strength. "Hmm. Thin arms, narrow shoulders, but there's fire in those eyes. Good. Fire is what we need in these dark times." "Dark times, sir?" I asked, suddenly uneasy. His grin faltered, and for a moment I glimpsed something haunted in his expression. "Aye, lad. There are whispers from the north. Whispers of wings and flame. But come—such talk can wait until after supper. Tonight, we feast. Tomorrow, we begin to make a knight of you." </nc-section>
created_at"2026-04-24T19:44:17.233Z" 4/24/2026, 7:44:17 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency688
moderation_latency(null)
generation_time13945
tokens_prompt318
tokens_completion868
native_tokens_prompt446
native_tokens_completion1207
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"
usage0.032405
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"fe8cc9f6-184b-47bf-9f19-07ed4c0da0da"
is_byokfalse
latency687
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-1777059857-5LYu0QCf8HkX4rDIUO2L"
session_id(null)
api_type"completions"
id"gen-1777059857-ROlTvQXeL0ZgOn6x8cas"
upstream_id"fe8cc9f6-184b-47bf-9f19-07ed4c0da0da"
total_cost0.032405
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