Run: 2026-10-08-01M4D9ZS4A41MKZV1E2JR79BF4

Run Details

Duration:
6.7s
Cost:
$0.000541
Provider:
Claude Platform on AWS

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: A Stern Welcome" data-color="red"> Frederick dismounted before Thunder had fully stopped, his boots striking the cobblestones with a jolt that rattled his teeth. Near the stables, a broad-shouldered man in dented plate stood with his arms folded, watching the young squire with the patience of a hawk. His grey beard was trimmed close, and a long scar ran from his left temple to his jaw. "You're late," the knight said, not unkindly. "The gate bell rang an hour ago. I am Sir Roland, and until the master-at-arms decides otherwise, you are mine to train." He nodded toward the stalls. "Brush down that stallion first. A good knight's horse is cared for before he is. Then we'll see what you're made of." </nc-section> <nc-section data-title="Version 2: The Knight in the Straw" data-color="green"> A sudden clatter came from the stables, followed by a burst of laughter. Frederick looked up to see a tall man in a leather apron emerge, wiping his hands on a rag. Only when he came closer did Frederick recognize the faded crest on the man's tabard and the easy grin beneath his silver-streaked hair. "Sir Roland, at your service," the knight said, offering a calloused hand. "Don't let the straw fool you. I was mucking out Gareth's stall because he bet me I couldn't do it without complaint, and I've already lost that wager." He clapped Frederick on the shoulder and steered him toward the water trough. "Now, you've ridden a long way. Let's get that dust off you, and then I'll tell you everything you need to know about surviving your first month here." </nc-section> <nc-section data-title="Version 3: The Weight of a Name" data-color="blue"> The stable doors creaked open, and a figure stepped into the fading light. Sir Roland was older than Frederick had imagined from the stories told in his village, his shoulders bent slightly beneath a worn cloak, yet his eyes were sharp and unhurried as they swept over the young squire and the sweat-darkened stallion. "Frederick of Ashford," he said quietly, as though testing the name. "Your letter spoke of courage. Courage is common in a boy your age. What is rare is the restraint to stay humble once it has been tested." He gestured toward the stalls. "Thunder is a fine horse, but he is not yours yet. Tend him, and then join me by the well. There is a matter of your oath I wish to discuss before the sun is gone." </nc-section>
created_at"2026-10-08T08:27:28.785Z" 10/8/2026, 8:27:28 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1481
moderation_latency(null)
generation_time6650
tokens_prompt303
tokens_completion611
native_tokens_prompt437
native_tokens_completion995
native_tokens_completion_images(null)
native_tokens_reasoning147
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"end_turn"
service_tier"default"
usage0.0005412
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791448048-M79Bu6ASMjM88EmSGSvi"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791448048-A77fp4hN1q2YuPqqicoO"
upstream_id"msg_011CfpTF4kh78Eq2j64Ex25e"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfpTF4kh78Eq2j64Ex25e"
is_byokfalse
latency723
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0005412
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

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