Run: 2026-10-08-01M4D9X2HY6QM5G07AP1T19FK5

Run Details

Duration:
7.7s
Cost:
$0.000601
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 (Version 1)" data-color="red"> The stable boy had barely taken Thunder's reins before a broad-shouldered man strode out from the shadows of the stables. His armor was dented and scratched, but it gleamed where the last of the sunlight caught it. A grey-streaked beard framed a face weathered by years of hard campaigning. "You must be Frederick," he said, his voice warm but edged with the authority of a man used to being obeyed. "I am Sir Roland. I have been expecting you since the midday bell. Your father wrote that you were eager to learn the sword, and I am eager to see whether that eagerness outweighs your ability." He clasped my forearm in the old soldier's grip, firm enough to make me straighten my back. "Put your saddlebags down. Thunder will be brushed and fed, and you will be shown to the barracks. Tomorrow at dawn, we begin. Do not be late." </nc-section> <nc-section data-title="Chapter 1: Sir Roland (Version 2)" data-color="green"> I had only just dismounted when a laugh rang out from beside the stable doors. A tall knight with a crooked grin leaned against the post, a half-eaten apple in one gauntleted hand. His surcoat bore the faded emblem of a silver heron, and a long scar ran from his temple to his jaw. "Well, you ride like a sack of grain tied to a saddle," he said, tossing the apple core to a waiting hound. "But Thunder seems to like you well enough, which is more than I can say for most of the boys who come through here. I am Sir Roland. I teach the squires, which means I am the one who will make your life miserable." He stepped forward and clapped my shoulder, his grin widening. "Don't look so worried. Everyone who survives my lessons ends up a better knight than they ever imagined. Get some rest tonight. You will need it." </nc-section> <nc-section data-title="Chapter 1: Sir Roland (Version 3)" data-color="blue"> The stable yard was quiet except for the soft nickering of horses. As I led Thunder toward the water trough, I noticed a figure standing motionless in the doorway, watching me with the patience of someone who had seen many newcomers arrive. He wore plain travel-worn leathers rather than armor, but the sword at his hip was well kept, and his bearing was unmistakably that of a warrior. "Frederick, I presume," he said quietly, stepping into the lantern light. "I am Sir Roland. I serve as the master of arms here, though I suspect you have already been told as much by someone far less polite than I am." His gaze moved over Thunder, lingering on the horse's legs and then on the set of my shoulders. "A good animal. You care for him well, I see. That will count for something here. Come, leave your horse with the stable hands. I want to show you something before the evening meal." </nc-section>
created_at"2026-10-08T08:26:00.135Z" 10/8/2026, 8:26:00 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7661
moderation_latency(null)
generation_time7661
tokens_prompt303
tokens_completion710
native_tokens_prompt437
native_tokens_completion1115
native_tokens_completion_images(null)
native_tokens_reasoning138
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"
usage0.0006012
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791447960-9RtedA5wmRKfeCYVdHkO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791447960-8x8YDja1Pc4d9LjQBCWZ"
upstream_id"msg_011CfpT8XmTAcG32sAXgixdH"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpT8XmTAcG32sAXgixdH"
is_byokfalse
latency734
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006012
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