Run: 2026-10-09-01M4FY3MGSQXAJRBS6P1VZ5G59

Run Details

Duration:
8.2s
Cost:
$0.000653
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"> The stables stood at the eastern edge of the courtyard, and I had barely dismounted when a broad-shouldered man in weathered chainmail strode toward me. His grey beard was trimmed close, and a long scar ran from his left ear to the corner of his jaw. He did not smile, but his eyes were warm. "You must be Frederick," he said, extending a gauntleted hand. "I am Sir Roland. I hold this castle's training yard, and God help you, you are now mine to shape." I clasped his hand, trying to match his grip. He nodded approvingly, though I suspected he was testing me. "Thunder is a fine animal," he said, running a hand along the stallion's neck. "Too fine for a squire, perhaps. Let us see whether you can ride as well as your horse can run. Tomorrow at dawn, you will learn that a knight's first lesson is patience. Tonight, you will learn where to sleep and what not to touch in my armory." </nc-section> <nc-section data-title="Chapter 1: The Stable Master's Warning (Version 2)" data-color="green"> Before I could reach for my saddlebags, a voice called out from the shadows of the stable doors. "Easy with that beast, boy. He bites." Sir Roland stepped into the fading light, leaning on a wooden staff. He was older than I had expected, his hair gone silver at the temples, yet he moved with the unhurried confidence of a man who had survived many battles. A faded crest on his tabard showed a silver oak against a green field. "Sir Roland," I said, bowing as my father had taught me. "I am Frederick, sent to begin my training." "So I have been told. Your letter arrived a fortnight ago, and it spoke more of your ambitions than your skills." He gave a dry chuckle. "That is no insult. Ambition is the seed of every good knight. Skill is the soil we must now turn over together." He gestured toward the stable hands, who hurried forward to take Thunder's reins. "Rest tonight. Eat well. You will need every ounce of strength when the bells ring at dawn." </nc-section> <nc-section data-title="Chapter 1: A Knight in the Dusk (Version 3)" data-color="blue"> The sound of a hammer on iron rang across the courtyard as I led Thunder toward the stables. Near the trough, a knight was sharpening a sword against a whetstone, his movements slow and deliberate. He looked up as I approached, and the stone fell silent under his hand. "Frederick, I presume," he said. His voice was quiet but carried easily. "I am Sir Roland. You rode in faster than I expected. Either you are eager, or your horse has a mind of its own." "A bit of both, I think, my lord," I replied, and he laughed, a rough sound that startled a nearby pigeon into flight. He rose and set the sword aside, wiping his hands on a cloth. "Do not call me lord. Out here, I am only the man who will make you bleed on the practice field until you learn to stop it. Come. Leave the horse to the grooms. I want to see what you carry in that pack before the cook takes it for kindling." </nc-section>
created_at"2026-10-09T08:57:35.519Z" 10/9/2026, 8:57:35 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2416
moderation_latency(null)
generation_time8177
tokens_prompt303
tokens_completion853
native_tokens_prompt437
native_tokens_completion1219
native_tokens_completion_images(null)
native_tokens_reasoning125
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"
usage0.0006532
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791536255-tsSrdpTfa9gckj050J8x"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791536255-1xPMT4w6M5vxBodnPLL1"
upstream_id"msg_011CfrPMAGY9PMA8jGYHjnjU"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrPMAGY9PMA8jGYHjnjU"
is_byokfalse
latency681
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0006532
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