Run: 2026-04-24-01KQ0N257WRVRD5TF28594K4N1

Run Details

Duration:
20.0s
Cost:
$0.025210
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 near the stables, where the scent of hay and oiled leather mingled with the cool evening air. Before he could dismount, a tall knight in a weathered cloak stepped from beneath the stable archway. His beard was threaded with silver, and the crest upon his breastplate marked him as one of the castle’s sworn defenders. “You must be Frederick,” the knight said, his voice steady and warm. “I am Sir Roland. We have been expecting you.” Frederick slid from the saddle and bowed quickly, nearly tangling his boot in the stirrup. Sir Roland’s mouth twitched in amusement, though his eyes remained kind. “Easy, lad,” he said. “A squire should learn balance before bravery.” Frederick straightened, cheeks burning. “Yes, Sir Roland.” The knight looked him over, then glanced toward the towering castle keep. “Your training begins at dawn. Tonight, see that your horse is tended and your courage well rested. Both will be needed here.” Frederick swallowed, feeling the weight of those words settle upon him. </nc-section> <nc-section data-title="Version 2" data-color="green"> As Frederick approached the stables, the great doors creaked open, spilling golden lanternlight across the cobblestones. A man in mail stood waiting there, one hand resting on the pommel of a sword whose hilt had been worn smooth by years of use. “Ho there,” the knight called. “You ride in as though chased by goblins.” Frederick reined in Thunder and managed an awkward bow from the saddle. “Frederick of Ashbrook, reporting for service.” The knight gave a low chuckle. “Sir Roland of the West Gate. Climb down before you report yourself into the mud.” Frederick dismounted, trying to appear graceful and failing when Thunder nudged him hard between the shoulders. Sir Roland laughed outright then, and even Frederick could not help smiling. “A fine horse,” said Roland, stroking Thunder’s neck. “And a finer heart, I hope, in the boy who rides him.” “I will do my best, sir,” Frederick said. “That is all any knight can ask at the beginning,” Sir Roland replied. “Come. The castle has many rules, and the stables are where most squires learn the first of them.” </nc-section> <nc-section data-title="Version 3" data-color="blue"> The castle stables lay in the shadow of the western wall, their thatched roofs dark against the fading sky. Frederick guided Thunder toward them, listening to the distant clang of the blacksmith’s hammer and the murmur of soldiers changing watch. A lone knight waited beside the stable gate. He was broad-shouldered and still as a carved statue, with a blue cloak fastened at his throat by a silver brooch shaped like a dragon’s wing. When Frederick drew near, the knight lifted his gaze, and Frederick felt suddenly as if every loose strap, dusty boot, and nervous breath had been counted. “Frederick,” the knight said. “Yes, sir.” “I am Sir Roland. Captain of the local guard and master of squires until the steward says otherwise.” Frederick dismounted and bowed. “It is an honor.” “Honor is easy to speak of,” Sir Roland said. “Harder to carry.” His stern expression softened as he took Thunder’s reins. “But you have come a long road, and that is no small thing.” Frederick looked up at the castle’s looming towers, where shadows gathered like folded wings. “Welcome to your first night,” Sir Roland said. “May it be quieter than the ones to come.” </nc-section>
created_at"2026-04-24T21:06:49.733Z" 4/24/2026, 9:06:49 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2458
moderation_latency(null)
generation_time19915
tokens_prompt318
tokens_completion952
native_tokens_prompt302
native_tokens_completion790
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"
usage0.02521
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_06f1e6035bfc87580169ebdb69d08c8195ab5289af6529e98c"
is_byokfalse
latency307
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-1777064809-17DaFtqPGCTbRuGQlD2u"
session_id(null)
api_type"completions"
id"gen-1777064809-ZF5qgd5wVlW1jQgxXSuV"
upstream_id"resp_06f1e6035bfc87580169ebdb69d08c8195ab5289af6529e98c"
total_cost0.02521
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