Lemon Slice

Lemon Slice is a tool for creating interactive AI avatars, positioned as the avatar layer for real-time AI conversation. Its core feature is: without a camera or a human actor, a single image with a face is enough to generate a digital character that can listen, speak, and respond in real time.

[Purpose] Lemon Slice adds a face that can talk and listen to existing chatbots or voice agents, and can be used for customer service, sales assistants, internal tools, educational tutoring, language practice partners, game characters, social applications, virtual streamers, as well as AI greeters, guides, and concierges in kiosks and displays in retail, hospitality, and public spaces.

[Main capabilities]

• Image to avatar: Upload a photo of any character to generate an interactive avatar, with no training, fine-tuning, or character rigging required. Any character with a face can be animated, including non-human characters, such as a turtle or a smiling teacup.
• Real-time interaction: The avatar can listen, speak, and respond to users in real time. Every frame is dynamically generated, with lip sync, facial expressions, and body language naturally synchronized, rather than playing pre-recorded clips.
• Control movements and emotions: Based on the Action Engine, it can animate the face, hands, shoulders, and posture, and movements and emotions can be controlled directly through the API.
• Ultra-low latency: The company says its response speed is the fastest among all mainstream avatar providers, with p99 latency of about 471 milliseconds, suitable for real-time conversation.
• Model architecture: Its self-developed Character World Model (CWM-1), with 20 billion parameters, can animate any character from a single photo at 20 fps. The company says it demonstrates emergent world modeling, physical simulation, and spatial understanding capabilities.
• Dynamic backgrounds: Supports animated backgrounds and physics-based simulation, and can update clothing or scenes in real time.
• Multi-model integration: Any language model, voice provider, and knowledge base can be connected through the API. The officially listed supported options include OpenAI, Claude, ElevenLabs, Cartesia, and others.
• Enterprise-grade features: Supports thousands of concurrent sessions, multi-region server deployment to reduce latency, and provides a zero data retention mode, suitable for privacy-sensitive enterprise workflows.

[How to use]

1. Choose or upload any image (any character with a face is fine, with no training or rigging required).
2. Connect any LLM/voice model and knowledge base through the Lemon Slice API.
3. Deploy online: It can be deployed to a website through components, a managed pipeline, or a self-managed pipeline. The company says it takes about 5 minutes to set up an agent with the developer-friendly API, and the hosted component requires only two lines of code.

[Applicable scenarios]

• Education and training: Build AI tutors, language coaches, and onboarding guides with real-time listening and speaking interaction, which can be used in various LMS or training platforms.
• Games, social applications, and interactive media: Create realistic digital characters, such as AI companions and virtual streamers.
• Physical installations: Deploy AI greeters, guides, and concierges on kiosks and displays in retail, hospitality, and public spaces.
• Customer support and sales: Add a face to customer service, sales assistants, and internal tools to improve trust, resolution rates, and user satisfaction.

[Limitations and not yet provided] Official materials do not explain details such as pricing, charging models, free quotas, content moderation policies, the specific list of supported languages, format restrictions for custom avatar uploads, or commercial use licensing terms. Whether there is a no-code interface for non-developers, mobile support, or a clear SLA is also not mentioned. The above information is not yet provided and should be subject to official channels.website. The company says it takes about 5 minutes to set up an agent with the developer-friendly API, and the hosted component requires only two lines of code.

[Applicable scenarios]

• Education and training: Build AI tutors, language coaches, and onboarding guides with real-time listening and speaking interaction, which can be used in various LMS or training platforms.
• Games, social applications, and interactive media: Create realistic digital characters, such as AI companions and virtual streamers.
• Physical installations: Deploy AI greeters, guides, and concierges on kiosks and displays in retail, hospitality, and public spaces.
• Customer support and sales: Add a face to customer service, sales assistants, and internal tools to improve trust, resolution rates, and user satisfaction.

[Limitations and not yet provided] Official materials do not explain details such as pricing, charging models, free quotas, content moderation policies, the specific list of supported languages, format restrictions for custom avatar uploads, or commercial use licensing terms. Whether there is a no-code interface for non-developers, mobile support, or a clear SLA is also not mentioned. The above information is not yet provided and should be subject to official channels.