NC Bench
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Run: 2026-02-16-01KHKB68VFS396NJENG8AS7RV2
Run Details
Model:
GPT-5 Nano
Test:
Tool usage within Novelcrafter
Scenario:
Create alternate prose sections
Duration:
42.8s
Cost:
$0.001695
Provider:
OpenAI
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
Messages
Meta
AI
<nc-section data-title="Chapter 2: The Greeting at the Stables" data-color="red"> Thunder snorted, the yard smelling of leather, hay, and rain-warmed iron. I had just secured Thunder's reins when a shadow moved along the row of stalls, and the local knight appeared—Sir Roland himself—greeting me with a nod near the trough. "Frederick," he said, voice even as steel, "I am Sir Roland, your first tutor and your guide through this place." He offered a gauntleted hand, and I took it, feeling the weight of years behind that handshake. "We begin with the grounds," he went on, "and I’ll see if your feet remember the pace of duty." The greeting left no doubt: this was the man I would learn from, and the road ahead would be worn by many steps and a few hard truths. </nc-section> <nc-section data-title="Chapter 2: The Greeting at the Stables" data-color="green"> The air carried the scent of leather and horsehair as I steadied Thunder and stepped away from the saddle. From between two weathered saddles, the local knight, Sir Roland, emerged and greeted Frederick with a quiet, practiced smile near the stable door. "I am Sir Roland, keeper of the training yard," he announced, clasping my forearm in a firm grip that spoke of summers spent lifting shields. "Today you learn to walk as a knight walks—steady, without hurry, with your head high but your feet no higher than your honor requires." His words settled over me like a shield, and I felt the first sting of the discipline I’d come to seek. </nc-section> <nc-section data-title="Chapter 2: The Knight's Welcome by the Stables" data-color="blue"> A pale sun painted the stable wall gold as Sir Roland stepped from the shadow of the tack room and approached me. He greeted Frederick with a courteous nod near Thunder's flank, where the horse pawed at a cobwebbed beam. "Frederick," he intoned, voice ringing clear as a bell, "I am Sir Roland, your guide and guardian in the days to come." He offered a gloved hand, and I answered with a grip that betrayed little fear and more resolve. "Come," he said, and the two of us crossed the yard toward the sparring rings, the old knight already testing the steps I would soon be forced to master. </nc-section>
created_at
"2026-02-16T13:46:25.430216+00:00"
2/16/2026, 1:46:25 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
7467
moderation_latency
(null)
generation_time
42278
tokens_prompt
318
tokens_completion
1603
native_tokens_prompt
302
native_tokens_completion
4200
native_tokens_completion_images
0
native_tokens_reasoning
3648
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.0016951
router
(null)
provider_responses
0
id
"resp_018671f401a213ed0169931f861b188193b4f3e8a0d6d97b76"
status
200
is_byok
false
latency
152
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771249542-lKMb85zQPboO70Xmwq2l"
upstream_id
"resp_018671f401a213ed0169931f861b188193b4f3e8a0d6d97b76"
total_cost
0.0016951
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
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
100.0000%