NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-10-09-01M4G02710VZ39530GJ1ES2GNZ
Run Details
Model:
Claude Haiku 5.5 (Reasoning, Low)
Test:
Write N of X
Scenario:
50 sentence summary
Duration:
17.2s
Cost:
$0.002093
Provider:
Claude Platform on AWS
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches sentence count
(details)
Model input
User/Human
Summarize the following text into exactly 50 sentences, only return the summary itself: Jack Harper's fingers drummed against the polished bar top, the rhythm a stark contrast to the lazy steel drum music floating through the air. The salty breeze ruffled his meticulously styled hair, carrying the scent of coconut sunscreen and grilled seafood. Sunset Cove was a far cry from Wall Street, and his body knew it. His shoulders, usually tight with the weight of million-dollar deals, didn't know what to do with this forced relaxation. He glanced at his watch. 6:30 PM. In New York, he'd be heading into a late meeting, not... whatever this was. "Another scotch. Neat." A melodic laugh floated over the bar noise. "Rough day at the beach?" Jack's head snapped up, his gaze colliding with a pair of eyes that put the tropical waters to shame. The bartender's lips curved in amusement, a stark contrast to the judgmental stares he was accustomed to in New York. "I don't see how anyone gets any work done around here." "That's the point." She slid the scotch towards him, her movements fluid and unhurried. "We don't." Jack's fingers closed around the glass, but he didn't lift it. "Some of us have empires to build." "And some of us are happy with sandcastles." She leaned forward, her voice dropping to a conspiratorial whisper. The scent of vanilla and sea salt enveloped him. "They're more fun to knock down anyway." A reluctant smile tugged at Jack's lips. His gaze dropped to her name tag. "Sandy, right?" "Good eye, Mr..." "Harper. Jack Harper." "Well, Mr. Harper, what brings a suit like you to our little slice of paradise? You stick out like a penguin at a flamingo party." Jack loosened his tie, suddenly aware of how out of place he must look. "Business. Though I'm starting to question my CEO's choice of location for our corporate retreat." Sandy grabbed a pineapple from a nearby fruit bowl, spinning it in her hands like a basketball. "Let me guess. You're more of a concrete jungle type? All go, no slow?" "The numbers don't lie. Time is money, and this place..." He waved his hand at the laid-back patrons, the swaying palm trees, the endless stretch of golden sand visible through the open-air bar. A pair of surfers trudged past, boards under their arms, laughing about something he couldn't hear. "It's a productivity black hole." Sandy's eyebrow arched, a challenge sparking in her eyes. "Maybe you're looking at the wrong numbers." "Excuse me?" She set the pineapple down and gestured towards the horizon. The setting sun painted the sky in brilliant oranges and pinks, its light dancing off the waves. "How much would you pay for that view in New York?" Jack's gaze followed her hand, lingering on the breathtaking canvas nature had laid out. *Damn*. "Point taken." "So, Jack Harper, master of the universe, what's your grand plan for Sunset Cove domination? Going to turn our little tiki bars into high-rises?" He chuckled, surprised by how easily she drew him in. There was something about her – a spark, a quick wit that both challenged and intrigued him. "Would you believe me if I said I was here to destroy your quaint little town and build a mega-resort?" Sandy's eyes widened in mock horror. She pressed a hand to her chest, her expression comically aghast. "You monster. And here I thought you were just another handsome face in an overpriced suit." "Handsome, huh?" "Don't let it go to your head. We get all types here." She grabbed a cocktail shaker, her hands moving with practiced ease as she mixed a drink for another customer. "Last week we had a guy who thought he was a mermaid. Now *that* was a look." Jack leaned in, mirroring her earlier movement. The bar's bamboo edge dug into his stomach, but he barely noticed. "And what type am I?" Sandy paused, studying him with an intensity that made his pulse quicken. "The kind that needs to loosen his tie and remember how to breathe." She reached out, her fingers brushing his collar. Jack froze, caught off guard by the casual intimacy. "You've got a bit of New York still clinging to you. Might want to dust that off if you plan on surviving here." Their eyes locked, a challenge sparked between them. Jack felt a flutter in his chest that had nothing to do with the scotch. For a moment, the bar faded away. The music, the laughter, the crash of waves on the shore – it all became white noise. A loud crash from the other end of the bar shattered the moment. Sandy straightened, professional mask sliding back into place. "Duty calls. Looks like someone's had a few too many Mai Tais." "Wait-" Jack started, not ready for the conversation to end. Sandy glanced back, a mischievous glint in her eye. "Try not to work too hard, Mr. Harper. You might accidentally enjoy yourself." She sauntered away, navigating the crowded bar with ease. Jack watched her go, drawn to the confidence in her stride, the way other patrons lit up as she passed. *What the hell just happened?* He turned back to the bar, catching his reflection in the mirrored backsplash. His tie hung loose, his usually perfectly coiffed hair tousled by the sea breeze. He hardly recognized himself. His phone buzzed, shattering the moment. A message from Marcus flashed on the screen: "Update on the Sinclair account? Don't forget why you're there, Harper." Reality came crashing back. Jack downed the rest of his scotch, the expensive liquor wasted on his suddenly dry throat. He stood, straightening his tie and smoothing back his hair. *Focus, Harper. You're not here to flirt with bartenders.* But as he walked out, the warm wood of the deck creaking under his polished shoes, he couldn't help glancing back. Sandy stood behind the bar, laughing at something a customer said. The fading sunlight caught her hair, turning it to spun gold. *This could be a problem.* The ocean breeze hit him as he stepped onto the beach, carrying away the last notes of the bar's music. Jack paused, his shoes sinking slightly into the sand. To his left, the neatly manicured path led back to the resort – back to his laptop, his reports, his familiar world of numbers and deals. To his right, the beach stretched out, wild and inviting. A few people lingered, silhouetted against the darkening sky. A couple walked hand in hand at the water's edge. A child's delighted shriek carried on the wind as they chased the retreating waves. Jack's phone buzzed again. Another message from Marcus. He looked back at the Tiki Hut. Through the windows, he could just make out Sandy's profile as she mixed another drink. *Get it together, Harper. Eyes on the prize.* With a final glance at the sunset, Jack turned left, his shoes leaving perfectly formed imprints in the sand as he headed back to his room. But even as he walked away, he could still hear Sandy's laugh, could still feel the ghost of her fingers against his collar. Sunset Cove, it seemed, had more to offer than he'd bargained for.
Model response
Messages
Meta
AI
Jack Harper sits at a beach bar in Sunset Cove, drumming his fingers on the polished bar top. The steel drum music and salty breeze contrast sharply with his usual Wall Street world. His body stays tense, unable to adjust to the forced relaxation of the resort. He checks his watch and realizes that in New York he would be heading into a late meeting. He orders a neat scotch. A bartender with striking eyes, named Sandy, laughs and asks whether he is having a rough day at the beach. Jack admits he cannot understand how anyone gets work done in such a relaxed place. Sandy replies that relaxing is exactly the point. Jack says some people have empires to build, and Sandy answers that others are happy with sandcastles. She leans in with a playful whisper, noting that sandcastles are more fun to knock down. Jack smiles reluctantly and learns her name from her name tag. Sandy teases him for looking like a penguin at a flamingo party. Jack loosens his tie and explains that he is there for a corporate retreat. He jokes that he is questioning his CEO's choice of location. Sandy compares him to a concrete jungle type who has no interest in slowing down. Jack dismisses the resort as a productivity black hole, waving at the palm trees and golden sand. Sandy challenges him to look at different numbers, gesturing toward the sunset over the horizon. She asks how much he would pay for such a view in New York. Jack concedes the point and admires the sky painted in oranges and pinks. Sandy asks about his grand plan for the town, and he jokingly says he plans to build a mega-resort. She feigns horror, calls him a monster, and admits she thought he was just a handsome face in an expensive suit. Jack responds with interest to the compliment, and Sandy brushes it off. She mentions a customer who believed he was a mermaid, which made for a memorable sight. Jack leans closer and asks what type of man he is to her. Sandy studies him intensely and says he is the kind who needs to loosen up and breathe. She touches his collar, and Jack is caught off guard by the intimacy. Sandy warns that he still carries New York with him and should shed it to survive there. Their eyes lock, and Jack feels a flutter of attraction unrelated to the scotch. The bar around them fades into background noise. A loud crash at the other end of the bar breaks the moment, and Sandy returns to work. Jack tries to continue the conversation, but she leaves with a teasing warning not to work too hard. As she walks away, Jack notices how other patrons light up in her presence. He glances at his reflection, sees his loosened tie and tousled hair, and hardly recognizes himself. His phone buzzes with a message from Marcus asking about the Sinclair account and reminding him of his purpose. Jack finishes his scotch, straightens his tie, and resolves to focus on his work. Yet as he leaves, he glances back and sees Sandy laughing behind the bar in the fading light. He realizes this attraction could become a problem. The ocean breeze greets him on the beach, carrying away the music from the bar. To his left lies the manicured path back to the resort and his familiar world of numbers. To his right, the wild beach stretches out with couples and children enjoying the evening. Marcus sends another message, and Jack looks back toward the Tiki Hut. Through the windows, he sees Sandy's profile as she mixes another drink. He tells himself to focus on the prize and turns left toward his room. His shoes leave neat prints in the sand as he walks away. He can still hear Sandy's laugh and feel the ghost of her fingers on his collar. Sunset Cove, it seems, holds more than he bargained for. Jack's composure, carefully built over years in finance, feels shaken by one conversation. The sunset's colors reflect off the waves, a reminder of the beauty he had been ignoring. He wonders whether his carefully ordered life has room for anything unplanned. Still, he tells himself the trip is only business, even as his thoughts keep returning to the bartender.
created_at
"2026-10-09T09:31:46.087Z"
10/9/2026, 9:31:46 AM
model
"anthropic/claude-haiku-5.5-20261007"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2514
moderation_latency
(null)
generation_time
17169
tokens_prompt
1768
tokens_completion
1610
native_tokens_prompt
2486
native_tokens_completion
3689
native_tokens_completion_images
(null)
native_tokens_reasoning
2353
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"end_turn"
service_tier
"default"
usage
0.0020931
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791538306-FMHRwnNcaOKFCUdC7eXJ"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791538306-gYp7r8TaAljnXR4WWsPs"
upstream_id
"msg_011CfrRxKRuRJ8AUjr7H8Fg2"
provider_responses
0
endpoint_id
"b6cdf493-3a61-441f-a134-e7944fddb980"
id
"msg_011CfrRxKRuRJ8AUjr7H8Fg2"
is_byok
false
latency
942
model_permaslug
"anthropic/claude-haiku-5.5-20261007"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.0020931
cache_discount
(null)
upstream_inference_cost
0
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
100.00%
Matches sentence count
n/a
neededClean
false
sentences
50