Kling AI, owned by China's Kuaishou Technology, is experiencing a significant surge in user adoption following OpenAI's decision to discontinue its Sora video generator. The app saw global weekly active users jump 4% to an average of 2.6 million in the week after Sora's shutdown announcement, according to data from market intelligence firm Sensor Tower . Even more impressively, Kling AI was already leading the market before Sora's demise, with 7.8 million monthly active users in March compared to Sora's 4.7 million .

Why Did OpenAI Kill Sora, and What Does It Mean for Competitors?

OpenAI's decision to shutter Sora reveals a harsh economic reality about AI video generation: the technology is expensive to run. The company announced it would discontinue the Sora website and app on April 26, with the developer platform following on September 24 . Despite launching to significant fanfare in fall 2025 with a 4,400% spike in downloads one month after launch, Sora's monthly active users declined every month since the start of the year .

The financial picture tells the story. Sora generated only $1.4 million in global net in-app revenue since its launch, compared to $1.9 billion for the ChatGPT app over the same period . OpenAI cited the need to streamline its product roadmap and shift resources toward robotics research, but the underlying issue is clear: video generation requires far more computing power than text-based AI tools, making it difficult to maintain profitability at scale .

How Are Other Video Generators Capitalizing on Sora's Exit?

The vacuum left by Sora's departure is creating immediate opportunities for rival platforms. Beyond Kling AI's 4% jump in weekly users, competing tools also saw gains in the same week . RunwayML and Vidu, a video generator from Beijing Shengshu Technology, each recorded a 1% increase in weekly active users . Both companies demonstrated investor confidence by raising new funding in February, positioning themselves to scale operations and compete for Sora's displaced user base .

Kling AI's parent company, Kuaishou, is particularly bullish about the opportunity. A day after OpenAI's announcement, Kuaishou told analysts on an earnings call that it expects Kling AI's annual revenue to more than double in 2026 . The tool's revenue grew to 340 million yuan (approximately $49.3 million) in the fourth quarter from over 300 million yuan in the preceding period, demonstrating strong momentum .

What Pricing and Technical Advantages Are Shaping the Market?

Cost efficiency is becoming the defining competitive advantage in AI video generation. Google recently launched Veo 3.1 Lite, an affordable alternative that costs $0.05 per second for 720p resolution video generation, compared to $0.15 per second for the faster Veo 3.1 version and approximately $0.40 per second for the basic Veo 3.1 model . This represents a two to three times cost reduction compared to previous solutions . An eight-second video can be created in less than a minute using Veo 3.1 Lite .

The availability of these tools varies across platforms. Veo 3.1 Lite is now available to developers via the Gemini API (Application Programming Interface) and Google AI Studio, supporting video creation based on text and images in both horizontal and vertical formats . Users can choose between 720p or 1080p resolution and video durations of four, six, or eight seconds . Runway's app is only available on Apple's App Store, while Vidu is accessible on both iOS and Android platforms .

Steps to Navigate the Evolving AI Video Generation Landscape

• Evaluate Your Budget Requirements: Compare pricing models across platforms like Kling AI, Runway, Vidu, and Google's Veo 3.1 Lite to determine which tool offers the best cost-to-quality ratio for your specific video generation needs and expected usage volume.
• Test Platform Availability and Features: Consider which platforms are available on your preferred devices and operating systems, and whether the specific video formats, resolutions, and durations offered match your creative requirements.
• Monitor Revenue Growth and Stability: Track which companies are raising funding and reporting revenue growth, as these signals indicate long-term viability and continued investment in product development and infrastructure.
• Assess Integration Capabilities: Determine whether you need standalone apps with social sharing features or developer tools that integrate into your existing workflow, as different platforms serve different use cases.

What Does Kling AI's Success Mean for Kuaishou's Future?

Kling AI represents a critical growth opportunity for Kuaishou, a Beijing-based internet company that has historically lagged behind ByteDance's TikTok in short-form video streaming . The tool's strong performance is helping boost overall sales at the parent company, though some analysts have expressed concerns about returns on Kuaishou's rising AI investments . The company's stock price target was cut by some analysts who questioned whether the AI investments would deliver sufficient returns .

However, Kuaishou faces the same challenge that ultimately defeated OpenAI's Sora: balancing user demand with the substantial computing costs required to operate AI video generation tools at scale . The company must demonstrate that Kling AI can achieve profitability while maintaining the quality and performance that attracted users in the first place. If successful, Kling AI could become a significant revenue driver for Kuaishou and help the company compete more effectively in the broader AI and short-video markets.

The broader market context suggests that AI video generation is moving toward a tiered pricing model, with budget-conscious creators and enterprises choosing cost-effective options like Google's Veo 3.1 Lite, while professionals and high-volume users may opt for more feature-rich platforms like Runway or Kling AI . As computing costs continue to decline and competition intensifies, the winners will likely be platforms that combine affordability, ease of use, and robust feature sets that appeal to creatives, filmmakers, and marketers seeking to produce video content at scale.