Changelog

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Realtime SDK Overhaul & Lucy 2

• Lucy 2 Realtime - Launched Lucy 2 (lucy_2_rt), a new realtime video-to-video model with character reference image support
• Session viewing - Other clients can now watch an active realtime session as read-only viewers using a subscribe token
• Unified set() method - Atomically replace session state (prompt and reference image) in a single call across JavaScript and Python SDKs
• Auto-reconnect - Realtime SDKs now automatically reconnect with exponential backoff when connections drop
• generationTick event - Track session duration and billing with a new periodic event during generation
• New connection states - Added "generating" and "reconnecting" states for better lifecycle visibility

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Lucy 2 RT Preview, Reference Images & Avatar Live

• Lucy 2 RT (Preview) - Early access to Lucy 2 realtime at 720p@20FPS
• Reference images - Added reference image support for Lucy Restyle Live, Lucy Restyle, Lucy Pro, and Lucy Edit models in realtime
• Avatar Live - New model for audio-driven avatar animation with MP3 support
• Server proxy - New server proxy integration and Next.js proxy adapter for backend-to-backend SDK usage
• React Native support - JavaScript SDK now supports file uploads from React Native
• Python 3.10+ - Python SDK now requires Python 3.10 or later

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Lucy Restyle & Client Tokens

• Lucy Restyle - New video restyling model (lucy-restyle-v2v) for transforming video aesthetics with up to 30-minute input
• Client tokens - New client tokens API for secure short-lived token creation in client-side apps
  • Unified generate endpoint - All model generation consolidated into a single API route
  • Image cropping - Crop uploaded images before processing in the Studio
  • Reduced image pricing - Lower pricing for image generation models

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Queue API & AWS Marketplace

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New Features

• Queue-based API - Introduced queue API pattern for video generation, enabling better handling of long-running jobs
• AWS Marketplace - Decart API Platform is now available on AWS Marketplace with integrated billing
• Showcase page - Added a new showcase page highlighting community creations and use cases
• Lucy Fast - Added Lucy Edit Fast model for quicker video-to-video transformations

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API & SDK Updates

• Updated model routes and code examples for job submission workflow
• Improved error messages when content violates Terms of Service
• Updated video pricing for 720p resolution

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Platform Improvements

• Enhanced billing page with AWS Marketplace support
• Improved credits reserve and deduction logic
• Better video expand functionality in the video player

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Lip Syncing, Motion & Platform Redesign

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New Features

• Lip Syncing - Added realtime lip-syncing capabilities to sync audio with video
• Lucy Motion - Introduced Lucy Motion model for object animation and movement
• Lucy Restyle Live v2 - Upgraded to Lucy Restyle Live v2 as the default realtime model with improved quality
• Video recording - Added ability to record sessions directly in the Realtime Playground

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Platform Redesign

• Launched redesigned homepage with improved navigation
• New model page in Studio with better organization
• Redesigned sign-in page and authentication flow
• Mobile-optimized Realtime Playground experience
• Renamed “Studio” to “Models” for clarity

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SDK & Documentation

• Released Python SDK documentation
• Added Swift SDK for iOS development
• Added comprehensive lip-syncing documentation
• Upgraded to Next.js 16 for improved performance

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Developer Experience

• Idle detection with warning dialog in Realtime Playground
• Improved ephemeral API key handling
• Added preset functionality for quick model configuration
• GDPR-compliant analytics with consent management