Chatter vs Hy4 preview: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Chatter and Hy4 preview — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
C
Chatter
Unknown Developer
Your apps main description and features.
Key features
- Market visualizations (candlestick charts, Bollinger Bands — referenced in related projects)
- Portfolio analytics and performance insights
- Sentiment analysis combining news and social media chatter
- Symbol lookup / name-to-symbol search (SYMBOL_SEARCH-like functionality referenced by third-party projects)
- Web-based application interface (official site available)
Best for
- Visual exploration of stock and crypto price data using technical charts
- Portfolio performance analysis and optimization
- Incorporating news and social media sentiment into trading research
- Converting company names to tradable symbols for quote lookup and trade routing
- Automated reporting and alerts (third-party projects demonstrate report/email workflows)
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.