Hy4 preview vs Zeemo: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Hy4 preview and Zeemo — 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.
Zeemo
Zeemo GmbH & Co. KG
Web and mobile app that automatically generates accurate multilingual subtitles and captions for video content.
Key features
- Automatic Subtitle Generation: Converts spoken audio into time-aligned captions using automated speech-to-text to rapidly produce subtitles without manual transcription.
- High Accuracy Transcription: Marketed accuracy claims (reported up to 98% in third-party references) to minimize manual corrections and speed subtitle workflows.
- Multilingual Support: Generates captions in multiple languages and can produce translated subtitle tracks for broader audience reach and localization.
- Web and App Workflow: Available as an online software and app, enabling upload, processing, and in-browser/mobile review of subtitle files across platforms.
- Inline Subtitle Editor: Provides a review and editing interface for adjusting timestamps, correcting transcript text, and styling captions before export.
- Flexible Export Formats: Exports standard subtitle formats (e.g., SRT, VTT) and options for burned-in (hardcoded) captions or separate caption tracks for publishing platforms.
- Batch Processing & Automation: Supports automated processing pipelines to replace manual transcription for creators producing multiple videos.
- Accessibility & Compliance Tools: Produces captions suitable for accessibility requirements and social platforms to increase reach and compliance.
- Automatic subtitle/caption generation from video or audio
- Credits-based usage model
- Export subtitles in common formats (SRT, VTT, etc.)
- Multi-language transcription and subtitle support
- Drag-and-drop upload web interface
- Automatic subtitle generation from video/audio
- Multilingual subtitle support (multiple languages)
- Web-based application and online editor/uploader
- High accuracy claimed in third-party listings (up to 98%)
- Integration tooling available in GitHub org (e.g., capacitor-oauth2 plugin)
- Supports OAuth2 integration via a Capacitor plugin maintained in the Zeemo GitHub org
- Suitable for individual creators and entrepreneurs for rapid captioning workflows
- No explicit public API documentation found in provided content — GitHub repos provide integration starting points
Best for
- YouTube Creator Workflow: Rapidly generate and edit accurate subtitle tracks to publish videos with captions and translated versions for international audiences.
- Social Media Captioning: Automatically create burned-in or sidecar subtitles for short-form social videos to improve watchability on mute-first platforms.
- Localization for Marketing Campaigns: Produce translated subtitle files to localize video ads and product demos across multiple regions and languages.
- Accessibility Compliance for Businesses: Add captions to corporate training, webinars, and public-facing videos to meet accessibility standards and improve comprehension.
- Batch Captioning for Content Libraries: Process large back catalogs of video to add searchable, time-coded captions and improve discoverability and SEO.
- Rapid Transcript Generation for Editing: Generate transcripts to accelerate editing, highlight reels, and repurposing of video content into articles or social posts.
- Content creators adding captions to social media or long-form videos
- Marketing teams preparing captioned videos for campaigns
- E-learning creators generating subtitles for course videos
- Businesses producing multilingual video content
- Podcasters or video producers needing quick SRT exports
- Adding accurate captions to social media and marketing videos
- Automated transcription and subtitle generation for content creators
- Localization of video content into multiple languages
- Improving accessibility and compliance for video content
- Embedding subtitle workflows into hybrid mobile apps via Capacitor plugin