Run: 2026-04-24-01KQ0PAGTEZV8K7WVCW0WABGZH

Run Details

Duration:
25.6s
Cost:
$0.033970
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"> Frederick drew Thunder to a halt beside the castle stables, where the scent of hay, leather, and warm horses drifted into the evening air. Stable boys hurried to and fro with buckets and brushes, but one figure stood still amid the bustle: a tall knight in a weathered cloak, his silver breastplate catching the last fire of the sunset. “You must be Frederick,” the knight said, his voice steady and deep. Frederick swung down from the saddle and bowed as best he could, though his legs still trembled from the long ride. “Yes, my lord.” The knight’s stern face softened into the faintest smile. “Sir Roland will do. I am the knight charged with your training—provided you survive your first week.” Frederick swallowed, unsure whether it was a jest. Sir Roland stepped closer and laid a hand on Thunder’s neck. The stallion, to Frederick’s surprise, calmed instantly beneath his touch. “A fine horse,” he said. “But a squire is judged by more than how boldly he rides through a gate.” Frederick straightened. “I am ready to learn, Sir Roland.” “We shall see,” the knight replied. He turned toward the stable doors, where shadows gathered like waiting secrets. “Come. Before you meet the sword, you must learn the stable fork. No warrior is above humble work.” Frederick followed him inside, his heart beating fast—not with fear alone, but with the thrilling certainty that his true beginning had arrived. </nc-section> <nc-section data-title="Version 2" data-color="green"> By the time Frederick reached the stables, twilight had settled over the castle yard like a blue cloak. He dismounted carefully, stiff from travel, and led Thunder toward a row of lantern-lit stalls. A voice called from beneath the stable arch. “You sit a horse well for a boy with road dust in his ears.” Frederick turned and saw a broad-shouldered knight leaning against a wooden post. His dark beard was streaked with gray, and a scar crossed one cheek from temple to jaw. Yet his eyes held a glint of humor. “I am Frederick,” the young squire said quickly. “Sent by Lord Aldwin to train at the castle.” “Aye, I know.” The knight pushed himself upright. “I am Sir Roland. Around here, I teach boys how not to fall off horses, drop swords, or insult cooks. The last lesson is the most important.” Despite himself, Frederick smiled. Sir Roland took Thunder’s reins and inspected the stallion with practiced care. “You have fed him well on the road?” “Yes, sir.” “Rubbed him down at night?” “Every night.” The knight nodded, approving but not indulgent. “Good. A man who neglects his horse will neglect his honor soon enough.” Frederick felt warmth rise in his chest. Sir Roland handed the reins to a waiting stable boy, then motioned toward the castle keep. “Come along, lad. Supper first, questions after. At dawn, we learn what you are made of.” Frederick looked up at the towering keep, its windows glowing like watchful eyes, and followed his new master into the deepening night. </nc-section> <nc-section data-title="Version 3" data-color="blue"> The castle gates groaned shut behind Frederick as he guided Thunder across the cobbled courtyard. Near the stables, torches flared in iron brackets, painting the walls in restless gold. He had imagined trumpets, pages, perhaps even the castellan himself awaiting his arrival. Instead, he found a knight mending a saddle strap. The man sat on an overturned barrel beside the stable door, his sword propped within arm’s reach. His armor was plain, dented in places, and polished only where use had worn it bright. He did not look up at once. “You’re late,” the knight said. Frederick blinked. “Sir?” “Sunset was half an hour ago.” “I rode as swiftly as I could.” At last the knight raised his head. His gaze was sharp as a drawn blade. “Swiftly is not always wisely. Thunder is lathered.” Frederick glanced at his stallion and felt a flush of shame. “I—I wished to arrive before dark.” “And so you nearly spent your horse to save your pride.” The knight rose, taller than Frederick had expected. “I am Sir Roland.” Frederick bowed low. “Forgive me, Sir Roland.” The silence stretched. Then the knight took the reins and ran a firm hand along Thunder’s neck. “Forgiveness is easy. Learning is harder.” Frederick nodded, chastened. Sir Roland gestured to a brush hanging beside the stable door. “Begin there. When he is cooled, fed, and settled, you may eat. A knight’s first duty is to those who carry him.” Frederick took the brush. As he worked the dust and sweat from Thunder’s coat, Sir Roland watched without another word. And though no ceremony marked his arrival, Frederick understood that his training had already begun. </nc-section>
created_at"2026-04-24T21:28:52.309Z" 4/24/2026, 9:28:52 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency662
moderation_latency(null)
generation_time25460
tokens_prompt318
tokens_completion1303
native_tokens_prompt302
native_tokens_completion1082
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"
usage0.03397
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0ac5bb007e2060940169ebe0946a108195aa7dcaf93960c424"
is_byokfalse
latency277
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-1777066132-PztsBhsfC7ocUmSGtFSC"
session_id(null)
api_type"completions"
id"gen-1777066132-eQ78PLLjI3VmvKAZjJrL"
upstream_id"resp_0ac5bb007e2060940169ebe0946a108195aa7dcaf93960c424"
total_cost0.03397
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