Run: 2026-10-08-01M4DAFDA8QZZ2NP0E272JWHGG

Run Details

Duration:
8.9s
Cost:
$0.000680
Provider:
Claude Platform on AWS

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 1: Sir Roland's Welcome (Version 1)" data-color="red"> I had barely swung down from Thunder's saddle when a tall man in dented armor strode out of the stables, wiping his hands on a rag. His beard was grey at the edges, and a scar ran white across his left cheek. "You must be the new squire," he said, looking me over with a critical eye. "Frederick, is it? Sir Roland. I train the squires here, which means I'll be the one making your life miserable from dawn until dusk." He clapped a heavy hand on my shoulder, nearly knocking me sideways. "Don't look so pale, lad. Everyone starts as a fool. The trick is to stop being one by supper." He turned and bellowed for a stable boy, who came running to take Thunder's reins. Sir Roland watched the stallion with open admiration. "Fine beast. Too fine for a boy who's never held a sword, I'd wager. We'll see what you're made of." </nc-section> <nc-section data-title="Chapter 1: Sir Roland's Welcome (Version 2)" data-color="green"> The stable doors creaked open, and the smell of hay and leather rolled out to meet me. A knight stepped into the evening light, his armor worn smooth by years of use. He didn't hurry toward me. He simply studied me the way a farrier studies a hoof, slowly and without apology. "Frederick of Ashford," he said at last. "I am Sir Roland. The king's letter said you were coming, though it did not say you would arrive covered in dust and looking as if you'd ridden through a storm." I opened my mouth to explain the road, but he raised a hand. "Save it. Every squire who comes through that gate believes his journey is the hardest ever made. Mine was no easier." His expression softened, just slightly. "Your horse is well kept. Whoever raised him cared for him. That is a good sign for a squire." He nodded toward the stable yard, where a boy was already leading Thunder toward the water trough. "Tomorrow we begin. Tonight, you eat, you sleep, and you learn that the castle does not forgive late risers." </nc-section> <nc-section data-title="Chapter 1: Sir Roland's Welcome (Version 3)" data-color="blue"> Before I could take a second breath, a voice called out from beside the stables. "Ho, rider! Mind the mud, or the stablemaster will have your hide before the king does!" A knight was leaning against the stable post, grinning as though he had been waiting all day for something to amuse him. He was broad-shouldered and sun-browned, with a plain iron helm tucked under one arm and a laugh lines etched deep around his eyes. "Sir Roland," he announced, pushing off the post and offering his hand. His grip was firm and warm. "Local knight, sometime tutor, and the unfortunate soul who drew the job of teaching you which end of a sword to hold. You look like you've been riding since the last war ended." I laughed despite my weariness. "Close to it, sir." "Good. A squire who can laugh after a long ride will survive the first week." He glanced toward the setting sun, then back at me, and his grin faded into something more thoughtful. "Come. There's a fire in the hall and a bowl of stew with your name on it. You'll need your strength. The real lessons begin at dawn." </nc-section>
created_at"2026-10-08T08:36:00.976Z" 10/8/2026, 8:36:00 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2641
moderation_latency(null)
generation_time8851
tokens_prompt303
tokens_completion887
native_tokens_prompt437
native_tokens_completion1273
native_tokens_completion_images(null)
native_tokens_reasoning139
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"
usage0.0006802
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448560-xJQ62jyiVo4O7hQp0DvG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448560-Mg6Q7xQBqbdtVZwctrIB"
upstream_id"msg_011CfpTtphekb3uZE8NZhuZg"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTtphekb3uZE8NZhuZg"
is_byokfalse
latency843
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006802
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

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