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Prolific官方原厂
1869.8万/月
专项更强直接将团队与经过验证的人类参与者连接以进行偏好调整与研究，但缺乏托管的端到端标注管线。
AI Research Tool编辑评分：4.6付费69% 直接流量
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Appen vs reAlpha
Appen 记录了 665,840 月访问量，月度环比增长为 +0.2%，定价为定价请咨询。reAlpha 记录了 43,871 月访问量，增长率为 -4.6%，定价为免费。
Appen 记录了 665,840 月访问量，月度环比增长为 +0.2%，定价为定价请咨询。reAlpha 记录了 43,871 月访问量，增长率为 -4.6%，定价为免费。
reAlpha is a real-estate technology company whose consumer platform is designed to make buying a home commission-free, combining AI-assisted property search with a virtual, always-available real estate agent. Buyers browse listings, get matched with homes, and are guided through offers and closing with reduced or zero buyer-agent commission.
| 维度 / 指标 |  | |
|---|---|---|
| 官方域名 | appen.com | realpha.com |
| 定价模式 | 定价请咨询 | 免费 |
| 月访问量 | 66.58万 (665,840) | 4.39万 (43,871) |
| 月度环比流量变化 | +1103 (+0.2%) | -2098 (-4.6%) |
| 主要市场与份额 | 🇺🇸 美国 (22%) | 🇺🇸 美国 (70.7%) |
| 直接访问 / 月 | 23.83万 | 5659 |
| 用户评分 | 4.4 | 3.8 |
| 支持的平台 | 网站 | 网站 |
为前沿 AI 模型提供人工验证的训练数据与评估服务
思维链推理轨迹、专家级 RLHF、监督微调示范与对抗性红队数据，服务于最强能力的模型。
黄金轨迹、RL 环境设计、失败模式分类法，以及基于软件工程任务的智能体深度评估。
多语种 ASR 与会话语音数据、表现力 TTS 标注、视觉语言模型训练数据、视频动作标注与语音助手评估。
LiDAR 点云标注、多摄像头传感器融合、机器人示范轨迹、世界模型推演与具身交互日志。
reAlpha is a real-estate technology company whose consumer platform is designed to make buying a home commission-free, combining AI-assisted property search with a virtual, always-available real estate agent. Buyers browse listings, get matched with homes, and are guided through offers and closing with reduced or zero buyer-agent commission.
The platform is built to remove traditional buyer-agent commission from the purchase, keeping more equity with the buyer at closing.
A virtual agent handles guidance across search, offers and closing instead of requiring an in-person buyer's agent.
AI models analyse listings and buyer preferences to surface homes that fit budget, location and lifestyle.
Buyers get support through the full transaction, from initial search to closing, inside a single platform.
专项更强直接将团队与经过验证的人类参与者连接以进行偏好调整与研究，但缺乏托管的端到端标注管线。
结合自定义软件与专门的专家团队来处理复杂业务，但属于量身定制的服务。
结合强大的数据标注工具与自动化工作流程，但比人力托管服务更专注于软件工具。
提供先进的多模态数据策展与标注基础设施，但标注工作需要自备人力。
XLeads is a wholesaling software suite that bundles lead data, skip tracing, a CRM, dialer, SMS blasting, e-signing, disposition tools and AI agents into a single platform for real estate investors.
免费 / 开源Provides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
免费 / 开源Provides a flexible open-source annotation platform for self-hosting, but lacks Appen's managed enterprise human workforce services.
Supplies expert human annotators for specialized training and evaluation datasets, but operates at a smaller scale.
Supplies expert human annotators for specialized training and evaluation datasets, but operates at a smaller scale.
