Run: 2026-04-24-01KQ0PFNFGFTN8GJ63Z3SC4QA8

Run Details

Model:
GPT-5.5
Duration:
17.5s
Cost:
$0.023530
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 slowed Thunder to a trot as he neared the stables, the scent of hay and oiled leather rising to meet him. Before he could dismount, a broad-shouldered knight in a weathered cloak stepped from beneath the stable arch. “You ride boldly for one so newly arrived,” the knight said, his voice warm but edged with command. “I am Sir Roland, sworn sword of this castle.” Frederick swung down from the saddle and bowed, hoping the long ride had not left him looking too travel-worn. “Frederick, my lord. I have come to begin my training.” Sir Roland studied him for a moment, then gave a short approving nod. “Then see to your horse first. A knight who neglects his mount is no knight at all. After that, we shall see what sort of steel lies beneath your manners.” Frederick took Thunder’s reins and felt, for the first time since reaching the castle, that his true test had already begun. </nc-section> <nc-section data-title="Version 2" data-color="green"> The castle yard bustled with the evening’s last labor. Stable boys carried buckets from the well, hens scattered beneath wagon wheels, and somewhere beyond the smithy a hammer rang like a bell. Frederick guided Thunder toward the stables, trying not to stare at every stone and banner as though he were still a village boy dreaming by the hearth. A knight waited beside the open stable doors, one hand resting on the pommel of his sword. His beard was touched with gray, and his eyes were sharp enough to make Frederick sit straighter in the saddle. “You must be the new squire,” the man said. Frederick dismounted quickly. “Yes, sir. Frederick of Ashbrook.” “Sir Roland,” the knight replied. “I keep order here, train boys who wish to become men, and occasionally teach men they are still boys.” A nearby groom smothered a laugh. Frederick flushed, but Sir Roland’s stern mouth curved almost into a smile. “Come, Frederick of Ashbrook. Stable your horse. Tomorrow, we find out whether you can hold a sword without falling over.” </nc-section> <nc-section data-title="Version 3" data-color="blue"> Thunder’s hooves clattered over the cobbles as Frederick entered the shadow of the stables. Lanterns had just been lit, their golden light spilling across the straw-strewn ground. The great stallion tossed his head, uneasy in the unfamiliar place, and Frederick whispered softly to calm him. “That is well done,” said a voice from the doorway. “A horse listens first to the heart, then to the hand.” Frederick turned and saw a knight standing in the lantern glow. His armor was plain but polished, his dark cloak clasped with a silver pin shaped like a hawk in flight. Frederick bowed. “My lord.” “Sir Roland will do,” the knight said. “And you are Frederick.” “Yes, sir.” Sir Roland approached Thunder and laid a careful hand against the stallion’s neck. The horse stilled at once. “Fine beast. Proud, strong, and not easily mastered.” His gaze shifted to Frederick. “Much like the boys they send me.” Frederick did not know whether to smile, so he stood silent. Sir Roland nodded toward the stables. “Bring him in. Supper can wait. Trust must be earned before comfort.” </nc-section>
created_at"2026-04-24T21:31:40.918Z" 4/24/2026, 9:31:40 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency914
moderation_latency(null)
generation_time17452
tokens_prompt318
tokens_completion870
native_tokens_prompt302
native_tokens_completion734
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"
usage0.02353
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_03208510135bc8970169ebe13cfd9081969d9c6d2f4d3fcdb7"
is_byokfalse
latency420
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-1777066300-aCXWYH8RspTZT8rA2sr2"
session_id(null)
api_type"completions"
id"gen-1777066300-hjap8SvvDoMLUJ69tiOL"
upstream_id"resp_03208510135bc8970169ebe13cfd9081969d9c6d2f4d3fcdb7"
total_cost0.02353
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