NC Bench
Overview
About
Tests
Models
Model
Claude Opus 4.5
Test
Write N of X
Scenario
50 sentence summary
Run ID
2026-02-08-01KGYYHB8DKHJAPKQNQEGS1BST
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 sat at a bar in Sunset Cove, his fingers drumming against the polished surface while steel drum music played. The salty breeze and tropical atmosphere contrasted sharply with his usual Wall Street environment. His shoulders, typically tense from high-stakes deals, felt awkward in this relaxed setting. At 6:30 PM, he noted he would normally be heading to a late meeting in New York. He ordered another scotch neat from the bartender. A melodic laugh caught his attention as the bartender asked if he had a rough day at the beach. Her eyes reminded him of tropical waters, and her amused smile differed from New York's judgmental stares. Jack complained about how anyone could get work done in such a place. Sandy, the bartender, explained that not working was precisely the point of Sunset Cove. Jack insisted he had empires to build while she countered that sandcastles were more fun. She leaned forward, smelling of vanilla and sea salt, creating an intimate moment. Jack noticed her name tag and introduced himself formally as Jack Harper. Sandy observed he stood out like a penguin at a flamingo party. Jack explained he was there for a corporate retreat, questioning his CEO's choice. Sandy playfully guessed he preferred the concrete jungle lifestyle. Jack criticized Sunset Cove as a productivity black hole while gesturing at the relaxed patrons and scenery. Sandy challenged his perspective by pointing to the sunset's stunning colors. She asked about his plans for the town with mock suspicion. Jack jokingly admitted he might destroy the town for a mega-resort. Sandy played along with dramatic mock horror at his villainous confession. She called him handsome while downplaying the compliment with stories of eccentric visitors. Jack asked what type of visitor she thought he was. Sandy studied him intently before saying he needed to loosen his tie and remember to breathe. She reached out and touched his collar, noting New York still clung to him. Their eyes locked in a charged moment as the bar faded around them. A crash interrupted their connection when someone had too many Mai Tais. Sandy returned to her professional duties but told Jack not to work too hard. She walked away confidently while Jack watched, captivated by her presence. He caught his disheveled reflection and barely recognized himself. His phone buzzed with a message from Marcus about business matters. Reality crashed back as Jack downed his scotch and straightened his appearance. He reminded himself he wasn't there to flirt with bartenders. Walking out, he glanced back at Sandy laughing in the sunset light. He thought this situation could become problematic. Standing on the beach, he faced a choice between the resort path and the wild shoreline. His phone buzzed again with another message from Marcus. Jack looked back at the Tiki Hut one more time. He told himself to focus on his goals. He turned toward the resort, leaving perfect footprints in the sand. Even walking away, he could still hear Sandy's laugh and feel her touch on his collar. Sunset Cove had more to offer than he had anticipated.
created_at
"2026-02-08T15:40:02.521353+00:00"
Sunday, February 8th, 2026 at 3:40:02 PM GMT+00:00
model
"anthropic/claude-4.5-opus-20251124"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1543
moderation_latency
(null)
generation_time
16989
tokens_prompt
1572
tokens_completion
612
native_tokens_prompt
1760
native_tokens_completion
678
native_tokens_completion_images
(null)
native_tokens_reasoning
0
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
"stop"
usage
0.02575
router
(null)
provider_responses
0
id
"msg_01536LWEGQkaPV9bHG3vfxyM"
status
200
is_byok
false
latency
1543
endpoint_id
"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-opus-20251124"
api_type
"completions"
id
"gen-1770565184-KmsjWH8vzUn5UTkOU05E"
upstream_id
"msg_01536LWEGQkaPV9bHG3vfxyM"
total_cost
0.02575
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
0.1414%
Matches sentence count
n/a
neededClean
false
sentences
41