内容来源：https://openai.com/index/wrtn

内容总结：

Wrtn：韩国AI新星如何用“生活化AI”改变用户互动模式

首尔，2023年10月26日 – 在数字文化高度发达的韩国，Wrtn公司正凭借其创新的人工智能应用，迅速成为千万用户的首选，不仅用于日常交流、学习，更深入到生活的方方面面。这家公司的成功秘诀，不仅在于其不断迭代的先进AI模型，更在于它赋予用户探索AI无限可能的能力，将人工智能从效率工具拓展为生活伴侣。

Wrtn最初以提升个人生产力为导向，推出了多款AI写作助手与笔记工具，旨在简化日常工作流程。然而，这仅仅是其宏大愿景的开端。Wrtn团队的终极目标是让AI成为人们日常生活中的自然语言界面。

鉴于韩国用户对KakaoTalk、LINE Friends等个性化平台的高度接受，Wrtn敏锐地捕捉到“生活化AI”的市场机遇。他们致力于打造亲和力强、功能强大的AI工具，帮助用户在学习、创作和探索中不断深化体验。Wrtn的AI负责人Amp Park表示：“我们意识到真正的机遇在于，让所有人都能通过AI轻松实现探索和创新。”

深入生活：从生产力到“生活化AI”的跃迁

为了让AI更贴近普通用户，Wrtn团队投入重金进行本地化优化，包括开发基于角色的提示词、记忆支架（memory scaffolding）以及细致入微的韩语俚语和语气的适配，旨在让用户交互体验如行云流水般自然。这一努力的结晶便是Wrtn旗下的开放式角色聊天平台——Crack。

Crack迅速成为韩国收入最高的聊天应用，它以用户熟悉且低门槛的方式，鼓励人们探索故事创作、语言学习和自我表达。如今，Wrtn的产品矩阵已涵盖AI助手、实验室（Labs）和Crack，月活跃用户数高达650万。数据显示，用户留存率翻了一番，每位用户的平均使用时长增长了三倍，用户群体也从学生扩展到专业人士和家庭用户，各行各业的人们都在发掘AI激发创造力与好奇心的新方式。

攻克本地化难关：让AI“说”地道韩语

Wrtn面临的最大挑战之一，是如何让AI对话听起来像地道的韩语交流。早期，GPT-3模型的输出往往带有明显的翻译痕迹。而随着GPT-4和GPT-4.1的引入，AI的语气发生了质变，俚语、幽默感乃至最新的网络流行语都能自然融入。

为了确保AI回复既可控又富有人情味，Wrtn团队巧妙地运用系统提示注入（system prompt injections）以管理用户备注、基于角色的指导，并通过温度调控让回复更具人性化。Park先生自豪地表示：“现在大多数韩国用户已经感觉不到任何不自然或非母语化的输出了。这种架构同样适用于日本市场，一旦我们完成这种深度的本地化，模型的性能提升便能直接推动其普及。”

随版本迭代升级：AI产品规模化增长的秘诀

在技术层面，Wrtn采用了一种路由器架构。轻量级模型如GPT-4o mini和GPT-4.1 mini负责流量分类与引导，而咨询、辅导等复杂任务则由功能更强大的GPT-4.1和多模态TTS（文本转语音）模型处理。这种模块化设计使得系统升级无缝衔接：每当OpenAI发布新版本，Wrtn都能以最小的影响快速集成，从而立即提升性能和投资回报率。

例如，在路由器升级之后，平均会话时长增加了15%，首月用户留存率提升了10%。引入音频模型后，第一个月就产生了超过1万小时的辅导对话。用户开始将Wrtn的工具用于更广泛的场景，从家教到讲故事，这充分说明了亲和的设计如何将用例扩展到团队最初设想之外。

最近GPT-5的发布更是带来了显著飞跃。Wrtn在GPT-5发布当天便迅速集成上线。Park先生透露：“我们看到GPT-5上线后，用户数量和使用时长瞬间激增。”短短一周内，公司日活跃用户量增长了8%。GPT-5在指令遵循一致性、上下文处理以及个性化方面都表现出更强大的能力，Wrtn在其产品中的意图识别、网络搜索等各方面都看到了显著的性能提升。

个性化定制：赋能创意与学习的AI

通过将AI应用范围从单纯的生产力工具扩展开来，Wrtn成功地展示了如何让先进的AI模型在学习、创意和交流等领域，服务于数百万普通用户。

每一次OpenAI的新版本发布都进一步推动了这一使命。Wrtn正不断构建能够跟上模型进步的系统，将AI真正打造成为激发创造力、推动学习和鼓励探索的强大工具。

英文原文：

In Korea, millions of people turn to Wrtn’s AI apps to chat, learn, and get
things done. What sets the company apart isn’t just better models—it’s how
people keep discovering new ways to use its tools.

When Wrtn⁠(opens in a new window) [https://wrtn.io/] launched, it focused on
individual productivity, creating a set of AI-powered writing assistants and
note-taking tools to make everyday work faster.

But productivity was always just the beginning. The team’s bigger vision was to
make AI a natural language interface for everyday life.

In Korea, where digital culture already embraces character-driven platforms like
KakaoTalk and LINE Friends, Wrtn saw an opportunity for what they now call
Lifestyle AI: technology designed to be approachable and capable, helping people
learn, create, and explore in ways that deepen over time.

“We realized the real opportunity was in AI that made discovery and creativity
approachable for everyone.”

Amp Park, AI Lead, Wrtn

EXPANDING AI INTO EVERYDAY LIFE

To make AI more accessible to everyday users, the team invested in persona-based
prompts, memory scaffolding, and careful localization so interactions felt
effortless and natural in Korean slang and cadence. That work led to Crack,
Wrtn’s open-ended character chat platform, which quickly became Korea’s
top-grossing chat app by giving people a familiar, low-friction way to explore
storytelling, language learning, and self-expression.

Today, Wrtn’s product suite spans AI Supporter, Labs, and Crack, reaching 6.5
million monthly active users. Retention has doubled, time spent per user has
quadrupled, and the audience has expanded from students to professionals and
families—all discovering new ways AI can spark creativity and curiosity.

CRACKING NUANCED LOCALIZATION FOR KOREA

One of the hardest challenges Wrtn faced was making conversations feel natural
in Korean. Early GPT‑3 outputs felt like English sentences had just been run
through a translation engine. 

With GPT‑4 and GPT‑4.1, the tone shifted: slang, humor, and even new internet
expressions started coming through naturally. To keep responses both
controllable and human-like, the team layered in system prompt injections for
user notes, persona-based role guidance, and temperature tuning to make
responses feel more human.

“Most Koreans don’t see any unnatural or non-native outputs now,” said Park.
“This structure was exactly applicable to the Japanese market as well. So once
we have this kind of localization, it can be driven by the model performance
enhancement itself.”

BUILDING AI PRODUCTS THAT SCALE WITH EVERY RELEASE

Under the hood, Wrtn runs a router architecture that lets lightweight models
like GPT‑4o mini and GPT‑4.1 mini classify and direct traffic, while heavier
tasks like counseling or tutoring run on GPT‑4.1 and multimodal TTS. This
modularity makes upgrades seamless: every new OpenAI release can be swapped in
with minimal disruption, immediately multiplying both performance and ROI.

Flowchart showing how a user query is processed through intent detection, model
orchestration, and function calling to produce a final output.
[https://images.ctfassets.net/kftzwdyauwt9/50pUh5S8yLNUpFdwhu7QL/b4431cd92bbaee6d1a66c96d427d8338/Wrtn_GPT_-_Light__1_.png?w=3840&q=90&fm=webp]

After a router upgrade, session time rose 15% and month-one retention jumped
10%. Adding audio models drove more than 10,000 hours of tutoring conversations
in the first month alone. Users began using Wrtn’s tools for a wider range of
tasks, from tutoring to storytelling, showing how approachable design can expand
use cases beyond what the team first imagined.

The recent launch of GPT‑5 showed even bigger jumps, when Wrtn went live with
GPT‑5 the same day it launched. “We saw instant increases in users and time
spent with GPT‑5,” Park says.

Within a week, the company saw an 8% increase in daily active users. GPT‑5
delivered more consistent instruction adherence, stronger context handling, and
better personalization. Wrtn is seeing performance gains with GPT‑5 across its
product, including intent classification, web search, and more.

MAKING AI PERSONALIZED FOR CREATIVITY AND LEARNING

By expanding beyond productivity tools, Wrtn has shown how advanced models can
be made accessible and useful for millions across learning, creativity, and
communication.

Each new OpenAI release pushes that mission forward. Wrtn builds systems that
keep pace with model progress and turn AI into a tool for creativity, learning,
and exploration.