Kuaishou Launches FantaSay AI Companion App Globally

Kuaishou Technology, one of China’s leading short-video platforms, has expanded into the global AI market with the launch of FantaSay, an AI companion app targeting international users.

Developed by its Singapore-based subsidiary Symphony Tech, FantaSay officially launched in September 2025 after testing began in February 2025.

The app has already achieved over 500,000 downloads, according to Sensor Tower data. FantaSay allows users to interact with AI avatars that simulate human-like conversations. Many of these avatars reportedly feature adult-themed or emotional companionship content, similar to popular AI relationship platforms emerging globally. The app’s Portuguese-language content indicates a strategic focus on Brazil, a growing market for virtual social interaction apps.

Key Highlights

Kuaishou launches FantaSay AI companion app via Symphony Tech
Over 500,000 downloads achieved since global rollout in September 2025
Focus on Brazil market as Chinese AI firms expand overseas

Domestically, Kuaishou had previously tested a similar AI companion app under the name Kraft, but FantaSay represents its first major international AI expansion. The move aligns with a broader trend among Chinese AI startups like MiniMax, PolyBuzz, and HiWaifu, all of which are targeting overseas audiences with generative AI and virtual companion products.

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The launch comes amid growing scrutiny of AI-generated interactions and ethical questions around virtual intimacy platforms. While Kuaishou has denied circulating any misleading marketing materials for its AI agent platform Keloi, the company’s new direction highlights its ambition to build a global AI ecosystem beyond short video and social entertainment.