Run: 2026-04-24-01KQ0NSJS88M9FXWK2M8629K5B

Run Details

Duration:
17.7s
Cost:
$0.023740
Provider:
OpenAI

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="Version 1" data-color="red"> Thunder slowed as we neared the stables, his hooves clattering over the worn cobbles. The scent of hay, leather, and warm horseflesh drifted through the evening air, mingling with the distant smoke of the castle kitchens. I had scarcely swung down from the saddle when a tall figure stepped from beneath the stable arch. He wore a knight’s surcoat of deep blue, marked with the silver hawk of the local house, and his beard was touched with gray. Though his face was stern, his eyes held a glimmer of humor. “You must be Frederick,” he said, extending a gloved hand. “I am Sir Roland. If you’ve come to become a knight, then these stables are as fine a place to begin as any. A man who cannot care for his horse has no business carrying a sword.” I bowed quickly, nearly stumbling over my own boots. “Yes, sir. I mean—yes, Sir Roland.” He chuckled, taking Thunder’s reins with practiced ease. “Good. Then welcome to the castle, lad. Your training begins sooner than you think.” </nc-section> <nc-section data-title="Version 2" data-color="green"> As I guided Thunder toward the stables, I noticed a knight waiting beside the open doors, one hand resting upon the pommel of his sword. He was not dressed for ceremony; his mail was scuffed, his boots muddy, and a faint scar crossed his brow like a pale thread. Yet there was something in the way he stood that made even the stable boys move around him with care. “Frederick?” he called. I pulled Thunder to a halt and nodded. “Aye, my lord.” “Not lord,” he said. “Sir Roland will do.” I dismounted at once, my heart thudding harder than Thunder’s gallop had made it. This was the knight I had heard whispered about in village taverns—the man who had held the western bridge against twenty raiders and lived. Sir Roland studied me for a long moment. “You’re thinner than I expected.” I swallowed. “I can get stronger.” At that, the corner of his mouth lifted. “See that you do. Come along, squire. The stables first. Glory can wait until after the horses are fed.” </nc-section> <nc-section data-title="Version 3" data-color="blue"> The castle stables were alive with noise: horses snorting, boys shouting, buckets clanging against stone. I led Thunder through the bustle, trying not to appear as uncertain as I felt. Everything here seemed larger than home—the walls, the men, even the shadows cast by the towers. Near the stable doors stood a broad-shouldered knight in a weathered cloak. He turned as I approached, and the chatter around us seemed to quiet. “Well now,” he said, his voice deep as a drum. “This must be the new squire.” “I am Frederick,” I said, bowing as best I could while holding Thunder’s reins. “And I am Sir Roland.” He looked from me to my horse and back again. “You rode hard.” “Yes, sir. I did not wish to arrive late.” “A useful instinct,” he replied. “But remember this: a tired horse may cost a knight his life faster than a dull blade.” He reached out and patted Thunder’s neck. “Care for him well tonight, Frederick. Tomorrow, we learn what sort of steel lies in you.” </nc-section>
created_at"2026-04-24T21:19:37.262Z" 4/24/2026, 9:19:37 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2398
moderation_latency(null)
generation_time17573
tokens_prompt318
tokens_completion855
native_tokens_prompt302
native_tokens_completion741
native_tokens_completion_images0
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"completed"
usage0.02374
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0ff3b9c60c35deb80169ebde6a5bd48194a98283af33e6a8d9"
is_byokfalse
latency1480
model_permaslug"openai/gpt-5.5-20260423"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777065577-Lti8mXdw5B94lB3jLwVd"
session_id(null)
api_type"completions"
id"gen-1777065577-E53SeWpyUhU6BFkYKPOC"
upstream_id"resp_0ff3b9c60c35deb80169ebde6a5bd48194a98283af33e6a8d9"
total_cost0.02374
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
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