Hy4 preview vs Midjourney: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Hy4 preview and Midjourney — 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.
Midjourney
Midjourney
Text-to-image service that generates artistic images from textual prompts via Discord and a web interface.
Key features
- Discord Bot Interface: Native interaction via a Discord bot (commands like /imagine) that accepts text prompts and returns generated images directly in chat, enabling rapid iteration and community sharing.
- Model Versions & Seed Control: Multiple model versions are available to change stylistic output and users can specify starting seeds to produce more consistent or reproducible image results across runs.
- Prompt Parsing & Guidance: The system tokenizes and interprets prompt words; official community guidance details prompt structure, synonym selection, and brevity techniques to exert finer control over image composition and style.
- Web Interface: An online web UI complements Discord usage for browsing generated images, managing creations, and configuring account settings outside the chat environment.
- Variation and Upscaling Controls: Users can request variations of generated images and upscale selected results to higher resolution outputs for final use (workflow exposed through Discord commands and UI controls).
- Ecosystem Integrations: Third-party SDKs, unofficial APIs, and community-built bots (e.g., voter bots, Python SDKs) enable automation, competition management, image capture to databases like Airtable, and embedding Midjourney into custom workflows.
- Generates images from textual prompts (/imagine style commands)
- Primary access via Discord bot and a web interface
- Multiple model versions selectable by users
- Supports specifying seeds for consistent outputs
- Community tooling and bots (voter bots, galleries, competition tooling)
- Unofficial SDKs and wrappers (Python, Node.js) to automate generation and download
- SDK capabilities include downloading and converting generated images
- Requires active subscription for programmatic usage via unofficial SDKs
Best for
- Concept Art and Visual Development: Rapidly explore visual directions for characters, environments, and product concepts by iterating prompts and model versions to generate creative concept boards.
- Marketing and Creative Assets: Produce stylized imagery for social media posts, ad mockups, and marketing collateral where unique aesthetic visuals are required quickly.
- Character and Costume Design: Create multiple variations of character looks and outfits by prompting different styles, lighting, and cultural cues, then refine via variation/upscale steps.
- Prototyping Visual Styles: Test and compare distinct art directions or branding visuals by switching model versions and prompt strategies to inform human-led design decisions.
- Community Competitions and Curation: Run art competitions and voting workflows in Discord (using Midjourney output capture and voter bots) to engage communities and curate winning designs.
- Educational & Creative Prompting Practice: Teach prompt engineering and visual composition by experimenting with token choices, synonyms, and prompt structure to see cause-and-effect on generated outputs.
- Concept art and illustration generation from text prompts
- Rapid prototyping of visual ideas and moodboards
- Avatar and character design
- Community art competitions and voting systems (Discord)
- Educational and demo projects showcasing generative imagery