NC Bench
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Run: 2026-02-16-01KHK9N6W518DREGNNX6AKKE90
Run Details
Model:
GPT-5 Nano
Test:
Tool usage within Novelcrafter
Scenario:
Create alternate prose sections
Duration:
27.9s
Cost:
$0.001227
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="Version 1: Near the Stables" data-color="red"> Frederick dismounted and led Thunder toward the stable row, letting him sniff at the halter's leather before I looped it around a post. The air was thick with hay and warm horsehide, a simple scent that steadied my racing heartbeat. From the shadow of the nearest stall, Sir Roland stepped into the glow of the lanterns, metal creaking softly as he drew near. "Frederick," he said, a respectful nod tipping his head. "I am Sir Roland, master of these grounds. Welcome to the training." His gaze weighed me as if he were appraising a newly forged blade, careful and patient. I answered with a wary smile and a straight back, meeting his eyes with the promise of a willing pupil. </nc-section> <nc-section data-title="Version 2: The Greeting" data-color="green"> The last light spilled over the stable yard as I tightened Thunder's saddle and brushed a stray straw from his flank. The whole place smelled of straw and sun-warmed leather, a sanctuary after the ride. Sir Roland strode out from between the stalls, his armor catching a pink flare from the dusk and his helm tucked under one arm. "You must be Frederick," he said, voice rough as rope but steady. "The squire's life is no mercy, only duties." He offered a firm hand, and I took it, feeling the strength in his grip. "Come," he added, "we've much to begin." </nc-section> <nc-section data-title="Version 3: A Brief Exchange" data-color="blue"> Sir Roland met me at the stable entrance, a silhouette carved from steel and weathered courage. "Frederick," he began, voice even, "you ride with the heart of a knight, or you do not ride at all." I checked Thunder's reins and met his gaze, replying, "I am ready, sir." He studied me for a breath longer, then nodded. "Then follow me to the training yard," he said, turning toward the castle with measured steps, and I walked beside him, the weight of the long road ahead settling on my shoulders. </nc-section>
created_at
"2026-02-16T13:19:22.591587+00:00"
2/16/2026, 1:19:22 PM
model
"openai/gpt-5-nano-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
7257
moderation_latency
(null)
generation_time
27052
tokens_prompt
318
tokens_completion
1254
native_tokens_prompt
302
native_tokens_completion
3029
native_tokens_completion_images
0
native_tokens_reasoning
2496
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
0.0012267
router
(null)
provider_responses
0
id
"resp_00da6168849132f1016993193e6a048195a8fe47fb9668d4cb"
status
200
is_byok
false
latency
117
endpoint_id
"50329d77-04e1-4979-a184-c33030289476"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-nano-2025-08-07"
api_type
"completions"
id
"gen-1771247934-7A68vkr6NnEazbnlZmzr"
upstream_id
"resp_00da6168849132f1016993193e6a048195a8fe47fb9668d4cb"
total_cost
0.0012267
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%