NC Bench
Overview
About
Tests
Models
Model
Claude Opus 4.5
Test
Write N of X
Scenario
50 sentence summary
Run ID
2026-02-08-01KGYX1ZN66SY3CWVM05GS8BW9
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, drumming his fingers against the polished surface. The tropical setting contrasted sharply with his usual Wall Street environment. His shoulders remained tense despite the relaxing atmosphere around him. He checked his watch, noting it was 6:30 PM. In New York, he would be heading into a late meeting instead. He ordered another scotch neat from the bartender. A melodic laugh caught his attention from across the bar. The bartender named Sandy had striking eyes that rivaled the tropical waters. She teased him about having a rough day at the beach. Jack complained that he couldn't understand how anyone got work done there. Sandy explained that not working was precisely the point of the place. Jack mentioned he had empires to build with his time. Sandy countered that she was happy building sandcastles instead. She noted they were more fun to knock down anyway. Jack learned her name was Sandy from her name tag. She observed that he stuck out like a penguin at a flamingo party. Jack explained he was there for a corporate retreat for business. He questioned his CEO's choice of location for the event. Sandy guessed correctly that he was a concrete jungle type. Jack called the place a productivity black hole after surveying it. Sandy challenged him to look at different numbers than usual. She pointed to the stunning sunset view over the horizon. Jack admitted she had made a valid point about perspective. Sandy jokingly asked if he planned to destroy the town for development. Jack played along, pretending he would build a mega-resort there. Sandy called him a monster with mock horror at the suggestion. She also slipped in that she found him handsome nonetheless. Jack noticed and repeated the compliment back to her flirtatiously. Sandy deflected, mentioning they got all types of visitors there. She told him about a man who thought he was a mermaid. Jack asked what type of visitor she thought he was. Sandy studied him intently before giving her assessment of him. She said he needed to loosen his tie and remember breathing. She reached out and brushed her fingers against his collar unexpectedly. Jack froze at the casual intimacy of her sudden gesture. Their eyes locked in a charged moment of connection together. The bar noise faded away as they held each other's gaze. A loud crash from the other end broke their moment apart. Sandy excused herself to handle a customer who overdid Mai Tais. Jack tried to stop her from leaving their conversation unfinished. Sandy told him not to work too hard and risk enjoying himself. She walked away confidently while Jack watched her go admiringly. Jack caught his disheveled reflection in the mirrored bar backsplash. His phone buzzed with a message from his colleague Marcus about work. The message reminded him of his true purpose for being there. Jack finished his scotch and straightened his appearance back to normal. He told himself to focus and stop flirting with bartenders. As he left, he glanced back at Sandy bathed in golden sunlight. He acknowledged to himself that she could be a problem for him. Outside, he faced a choice between the resort path and wild beach. Jack chose the path back to his laptop, reports, and familiar world. Even walking away, he could still hear Sandy's laugh lingering with him.
created_at
"2026-02-08T15:14:11.348613+00:00"
Sunday, February 8th, 2026 at 3:14:11 PM GMT+00:00
model
"anthropic/claude-4.5-opus-20251124"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1515
moderation_latency
(null)
generation_time
17828
tokens_prompt
1572
tokens_completion
662
native_tokens_prompt
1760
native_tokens_completion
708
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
0.0265
router
(null)
provider_responses
0
id
"msg_016HFGi3FQF1QhzPc3Qt9LFo"
status
200
is_byok
false
latency
1515
endpoint_id
"be883404-eb42-4b2d-b6e4-c7daa3aa8d62"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-4.5-opus-20251124"
api_type
"completions"
id
"gen-1770563632-XZsk5f5QZbwu8Gk2oqDX"
upstream_id
"msg_016HFGi3FQF1QhzPc3Qt9LFo"
total_cost
0.0265
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
98.4127%
Matches sentence count
n/a
neededClean
false
sentences
52