NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-10-08-01M4DA121AYBWV2TN9JSP259F7
Run Details
Model:
Claude Haiku 5.5 (Adaptive)
Test:
Write N of X
Scenario:
50 sentence summary
Duration:
15.5s
Cost:
$0.002160
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 beachside bar in Sunset Cove, feeling out of place in the relaxed tropical setting. The steel drum music and salty breeze contrast sharply with the high-pressure world of Wall Street he is used to. His shoulders remain tight from the weight of million-dollar deals, and he struggles to relax. He checks his watch and realizes his colleagues in New York are heading into a late meeting. He orders another scotch, neat, from the bar. The bartender, Sandy, notices his suit and asks if he is having a rough day at the beach. Jack looks up and is struck by her eyes, which seem brighter than the tropical waters. Sandy's amused smile is refreshing compared to the judgmental stares he gets back home. Jack complains that no one can get any work done in such a place. Sandy replies that this is the point, since nobody works here. Jack says some people have empires to build, and Sandy responds that others are content with sandcastles. She leans in and jokes that sandcastles are more fun to knock down anyway. Jack smiles reluctantly and asks about her name tag, which reads Sandy. Sandy teases him that he looks like a penguin at a flamingo party. Jack loosens his tie, aware of how out of place he appears. He explains that he is in town for business, a corporate retreat his CEO chose. Sandy spins a pineapple in her hands and guesses that he is a concrete jungle type who values speed over slowness. Jack insists that time is money and calls the resort a productivity black hole. Sandy challenges him, suggesting he is looking at the wrong numbers. She points toward the horizon, where the setting sun paints the sky in brilliant oranges and pinks. She asks how much he would pay for that view in New York. Captivated by the scene, Jack concedes the point. Sandy calls him a master of the universe and asks about his plan to dominate Sunset Cove. Jack chuckles and jokes that he came to destroy the town and build a mega-resort. Sandy pretends to be horrified, calling him a monster while admitting he is handsome. She mentions a previous customer who believed he was a mermaid, which makes Jack laugh. Jack leans in and asks what type of man he is. Sandy studies him intensely and says he needs to loosen up and remember how to breathe. She brushes his collar, and the casual intimacy catches him off guard. She warns that he still carries a bit of New York with him and should shed it to survive there. Their eyes lock, and Jack feels a flutter that has nothing to do with the scotch. For a moment, the sounds of the bar fade into white noise. A loud crash at the other end of the bar breaks the moment, and Sandy returns to professional mode. Jack tries to keep the conversation going, but she leaves. Before walking away, she teases him not to work too hard, since he might accidentally enjoy himself. Jack watches her move through the crowd, drawn to her confidence. He catches his reflection in the mirror, noticing his loose tie and tousled hair, and hardly recognizes himself. A text from his colleague Marcus about the Sinclair account reminds him why he is there. Jack finishes his scotch, straightens his tie, and resolves to focus. As he leaves, he glances back and sees Sandy laughing with a customer in the fading sunlight. He admits to himself that this could be a problem. On the beach, he pauses between the manicured path back to the resort and the wild, inviting shoreline. Couples and families enjoy the evening, and a child's laughter carries on the wind. Marcus sends another message, and Jack looks back at the Tiki Hut. Through the windows, he glimpses Sandy mixing another drink. He tells himself to get it together and keep his eyes on the prize. Jack turns left toward his room, but he can still hear Sandy's laugh and feel the ghost of her touch. The sunset fades as he walks away, leaving his footprints in the sand. Jack realizes Sunset Cove has more to offer than he expected. Despite his resolve, he knows the island's charm has already begun to unsettle his carefully ordered life.
created_at
"2026-10-08T08:28:10.677Z"
10/8/2026, 8:28:10 AM
model
"anthropic/claude-haiku-5.5-20261007"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
15505
moderation_latency
(null)
generation_time
15505
tokens_prompt
1768
tokens_completion
1010
native_tokens_prompt
2486
native_tokens_completion
3823
native_tokens_completion_images
(null)
native_tokens_reasoning
2472
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
0.0021601
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1791448090-RblmROjuOaMjQXO8coV3"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1791448090-hRY1DBIemGMDgTAMm9sX"
upstream_id
"msg_011CfpTJA8yGk1CgjLfrnTNM"
provider_responses
0
endpoint_id
"b6cdf493-3a61-441f-a134-e7944fddb980"
id
"msg_011CfpTJA8yGk1CgjLfrnTNM"
is_byok
false
latency
823
model_permaslug
"anthropic/claude-haiku-5.5-20261007"
provider_name
"Claude Platform on AWS"
status
200
total_cost
0.0021601
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