Hy4 preview vs LALAL.AI: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Hy4 preview and LALAL.AI — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
Hy4 preview
Tencent
Tencent's open-weight Hy4 preview, a 770B-parameter Mixture-of-Experts model with 49B active parameters and a 1M-token context window.
Key features
- 770B Mixture-of-Experts Architecture: Holds 770 billion total parameters while activating only 49 billion per token, so capacity scales without proportional inference cost.
- 1M-Token Context Window: Accepts inputs exceeding one million tokens, allowing whole codebases, long document sets or extended agent traces in a single prompt.
- Apache 2.0 Open Weights: Released under a permissive licence that allows commercial use, modification and redistribution with no separate agreement.
- Productivity Task Focus: Tuned for real-world coding, office work and scientific research rather than narrow benchmark optimisation.
- Multi-Product Availability: Accessible globally through Tencent's WorkBuddy, CodeBuddy, Yuanbao and ima applications in addition to the raw weights.
- API Access via TokenHub and OpenRouter: Can be called through Tencent Cloud TokenHub or OpenRouter for teams that prefer hosted inference over self-hosting.
Best for
- Whole-Repository Code Work: Load an entire codebase into the million-token context to reason about refactors and cross-file dependencies at once.
- Long-Horizon Agent Tasks: Drive multi-step agent workflows where the full history of tool calls and intermediate results must stay in context.
- Self-Hosted Deployment: Run a frontier-scale open-weight model on private infrastructure where data cannot leave the organisation.
- Scientific Literature Analysis: Ingest large collections of papers or experimental logs and synthesise findings without chunking the input.
- Office Document Processing: Summarise, draft and restructure long reports, contracts and spreadsheets in enterprise workflows.
- Commercial Fine-Tuning: Adapt the weights for a proprietary product under the Apache 2.0 licence without negotiating a model licence.
LALAL.AI
OmniSale GmbH
Web-based stem splitter that quickly extracts vocals, instruments, and accompaniment from audio and video with high-quality results.
Key features
- High-Quality Neural Separation: Uses proprietary neural networks (Phoenix, Rocknet, Orion, Cassiopeia referenced) to produce clean isolated stems with emphasis on audio fidelity.
- Multi-Stem Extraction: Extracts multiple stems beyond vocal/instrument accompaniment — historically expanded to support drums, bass, acoustic guitar, electric guitar, piano and synthesizer and up to 8–10 stems in later updates.
- Fast Web-Based Processing: Upload audio or video files via the website or app and receive extracted tracks in a matter of seconds for quick turnaround.
- Audio & Video Support: Accepts both audio and video files, separating stems directly from video soundtrack without prior conversion steps.
- Business & API Integration: Provides business solutions and API/examples to allow site, service or app owners to integrate LALAL.AI stem-splitting into third-party platforms.
- Multiple Model Options: Offers access to different models/algorithms to prioritize speed or separation quality depending on user needs.
- Exportable High-Quality Stems: Produces downloadable stems suitable for remixing, sampling, production, and post-production workflows.
- High-quality neural-network-based stem separation (models referenced: Rocknet, Phoenix)
- Extracts vocals, accompaniment and specific instruments (drums, bass, acoustic guitar, electric guitar, piano, synthesizer)
- Supports multi-stem output (historically 8-stem; cited support up to 10 stems in listings)
- Accepts audio and video uploads and returns separated tracks
- Fast processing (results available in seconds on the site)
- Business solutions and API/examples available for integration into other sites/services
- Accessible via official website and mobile app
- Third-party tools and community scripts exist for automating downloads and merging segments
Best for
- Karaoke and Practice Tracks: Remove or isolate vocals to create karaoke versions or instrumental practice tracks for musicians and singers.
- Remixing and Production: Extract individual instrument stems (drums, bass, guitars, piano, synths) for remixing, re-arranging or creating stems-based productions.
- Post-Production for Video: Isolate or remove background music and vocals from video soundtracks for editing, dubbing, or sound design.
- Sampling and Sound Design: Isolate clean instrument or vocal samples for sampling, sound design, or reprocessing in a DAW.
- Music Education and Analysis: Separate parts to analyze arrangements, chordal structure, or individual performances for learning and transcription.
- Platform Integration: Embed stem-splitting via API in apps, services or websites to offer automated audio separation to end users or clients.
- Removing or isolating vocals for karaoke, remixing, or sampling
- Extracting individual instrument stems for mixing, mastering, and production
- Integrating stem-splitting into third-party websites, apps or services via business/API solutions
- Batch or automated workflows using community scripts (Python/Colab) to download and merge segments
- Audio-forensics or speech/music separation for research and post-production