Run: 2026-07-01-01KWEADZZ3C6XMWSEZM9KAD5TM

Run Details

Duration:
17.6s
Cost:
$0.012050
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: The Knight's Welcome" data-color="red"> Thunder's hooves clattered against the cobblestones as I drew near the stables, and there, leaning against a weathered post with the ease of a man who had spent his whole life in the saddle, stood a knight in gleaming half-plate. His surcoat bore the crimson lion of the kingdom's guard, and a long scar traced his jaw like an old friend. "You must be the new squire," he said, his voice booming yet warm, as he stepped forward and caught Thunder's reins before I even had the chance to dismount. "Sir Roland Ashvale. I've been expecting you, boy—word travels faster than a courier's horse when a Halloway comes to train." He looked me up and down, the way a blacksmith might inspect a blade fresh from the forge, searching for flaws and promise both. "Well," he said, clapping a heavy hand on my shoulder, "let's see what you're made of." </nc-section> <nc-section data-title="Chapter 2: An Unexpected Welcome" data-color="green"> As I slowed Thunder to a trot near the stable doors, a figure emerged from the shadows of the hay-scented interior—broad-shouldered, silver-haired despite a face that couldn't have seen more than forty winters, with kind eyes that belied the sword at his hip. "Easy there," the man said gently, not to me, but to Thunder, who nickered and settled almost instantly under his calm presence. "You ride a fine horse, young one. Fitting, for a squire come to serve the castle." "Sir Roland," he introduced himself, extending a hand roughened by years of swordwork. "Knight of the Western Wall, and—apparently—your welcoming committee, since the stablemaster's gone off chasing a runaway goat." He smiled then, and something about it eased the tightness in my chest that had been there since I left home. "Come. Let's get you and your horse settled before the Captain of the Guard decides to make a formal ceremony of your arrival. Trust me, you don't want that—his speeches run longer than a siege." </nc-section> <nc-section data-title="Chapter 2: A Test of Mettle" data-color="blue"> I hadn't even brought Thunder to a full stop when a sharp whistle cut through the evening air. A tall knight strode out from between the stable doors, his armor catching the last rays of sunlight, each step deliberate and measured like a man who had walked into a hundred battles and expected a hundred more. "You're late," he said, though there was no real accusation in his tone—more amusement than anything. "Sir Roland. I train the squires here, when I'm not busy pulling them out of trouble." He grabbed Thunder's bridle with practiced ease, giving the horse an appraising glance before turning that same scrutinizing gaze on me. "Frederick Halloway, is it? Your father sent word ahead. Said you had promise." He paused, letting the silence stretch just long enough to be uncomfortable. "We'll see about that soon enough. Dismount. We've got work to do before the moon's fully up, and I don't waste daylight—or moonlight, for that matter." There was no cruelty in his words, only the brisk efficiency of a man who had trained enough restless young hopefuls to know exactly how to handle one more. </nc-section>
created_at"2026-07-01T07:48:54.382Z" 7/1/2026, 7:48:54 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1692
moderation_latency(null)
generation_time17574
tokens_prompt318
tokens_completion830
native_tokens_prompt435
native_tokens_completion1118
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"
usage0.01205
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01LCf5MCEpg5SxUgLaUzz6Er"
is_byokfalse
latency1692
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-1782892134-HhMAFHsVphb7ywudYiVp"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782892134-ljSVtHynmWGse1qdXQ9G"
upstream_id"msg_01LCf5MCEpg5SxUgLaUzz6Er"
total_cost0.01205
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