Cloudflare Launches RealtimeKit SDK for WebRTC App Development

Cloudflare's RealtimeKit seeks to lower the barrier to entry for developers building interactive video applications, potentially increasing market competition from smaller players. By abstracting the complexities of WebRTC, it could enable faster iteration and deployment of new streaming services and features. The move continues Cloudflare's expansion into the developer tooling space, signaling an intent to capture real-time communication workloads. Watch for adoption rates among new and existing developers as a key indicator of its market impact.

Cloudflare RealtimeKit, announced in April 2025, integrates the acquired Dyte team and technology, providing client SDKs for platforms including Kotlin, React Native, Swift, JavaScript, and Flutter (Cloudflare Blog, April 2025). This move fills a previous gap in Cloudflare's WebRTC offering, which had lacked comprehensive client-side tooling (BlogGeek.me, April 2025). The broader Cloudflare Realtime suite now includes RealtimeKit alongside their SFU, STUN, and TURN services, with SFU and TURN now generally available and offering new features like simulcast and advanced analytics (Cloudflare Blog, April 2025).

In the competitive WebRTC SDK market, Cloudflare's RealtimeKit enters a field with established players. LiveKit is noted for its open-source SFU and growing dominance in AI voice agent deployments, offering both self-hosted and cloud options (APIScout, 2026). Daily is highlighted for its rapid time-to-market with pre-built UI components and strong focus on real-time voice applications, including the Pipecat AI framework (APIScout, 2026; BlogGeek.me, April 2025). Other significant vendors include Agora, recognized for its global network, and Vonage, preferred for enterprise and compliance-heavy use cases (getstream.io, 2026).

Pricing models vary significantly across the market. Cloudflare Calls previously offered aggressive pricing, which RealtimeKit may build upon (Fora Soft, 2026). For instance, LiveKit Cloud charges per participant-minute for video, while Daily charges per participant-minute with a free tier. For applications exceeding 10,000 minutes per month, a hybrid approach combining self-hosted SFUs for steady loads and managed services for spikes is increasingly favored for cost efficiency (Fora Soft, 2026). The integration of AI capabilities, like Cloudflare's partnership with Hugging Face to offer free TURN bandwidth for FastRTC users, indicates a growing focus on AI-powered real-time communication within the industry (Cloudflare Blog, April 2025).