LemonSlice is named the best overall interactive AI avatar platform for real-time video agents, enabling two-way conversations, responsive lip sync, and custom characters from a single image. Its self-serve plans include unlimited avatars, API access, 30-minute calls, and the ability to bring an existing LLM or AI voice provider. Plans start at $7 per month, with high-volume hosted experiences reaching pricing as low as $0.039 per minute. LemonSlice-2.1 is described as a 20-billion-parameter diffusion transformer capable of 20 frames per second on one GPU. Video agents support voice and text conversations, optional camera-based vision, more than 30 languages, and hosted voice options support 70-plus languages. Enterprise options include 1,000-plus concurrency, 24-hour calls, data residency choices, zero-data-retention options, custom actions, and emotional states. Real-time image updates, green-screen compositing, and flexible aspect ratios support product tours, sales characters, and interactive entertainment. Tavus is also listed as a developer-led platform for building conversational video interfaces around custom LLMs, knowledge sources, and voice systems, with a free tier including 25 minutes of conversational video and a $59-per-month Starter plan including 100 minutes and up to three concurrent streams.