GLM-4.6V vs Hy4 preview: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of GLM-4.6V and Hy4 preview — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
GLM-4.6V
Z.ai (zai-org)
Multimodal foundation model (106B) with 128K-token context, native function-calling, and a 9B Flash variant optimized for local deployment.
Key features
- Large-Scale Multimodal Model: GLM-4.6V (≈106B) fuses vision and language capabilities to jointly process text, images, layouts, tables, charts, and figures for rich document understanding.
- Extended Context Window: Trained to scale up to a 128K-token context, enabling comprehension and generation over very long or multi-document inputs without prior text-only conversion.
- Native Function Calling / Tool Integration: Built-in function/tool-calling primitives allow the model to invoke search, retrieval, or external APIs during generation to gather and curate additional text and visuals.
- Interleaved Image-Text Generation: Generates coherent mixed-media outputs that interleave text and images, useful for producing richly formatted reports, annotated documents, and visual explanations.
- Flash Variant for Local Deployment: GLM-4.6V-Flash (≈9–10B) is optimized for low-latency and edge/local inference and is distributed in quantized GGUF builds for efficient CPU/GPU execution.
- Quantization & FP8 Support: Official recipes and community tooling support FP8 and multiple quantization schemes (Q3/Q4/Q5/Q6 variants) to trade off quality and memory footprint for different deployment environments.
- Document Layout and Visual Understanding: Directly interprets richly formatted pages as images and jointly reasons over text+layout to handle tables, charts, and multi-page documents without converting to plain text.
- Interleaved image-text content generation from complex multimodal contexts (documents, user inputs, tool-retrieved images).
- Native Function Calling integrated to allow models to invoke tools/actions during generation.
- Very large context window (scaled to 128k tokens in training) for long-context and document-heavy tasks.
- Two main variants: GLM-4.6V (~106B) for cloud/cluster scenarios and GLM-4.6V-Flash (~9B) for lightweight local, low-latency use.
- FP8 support with minimal accuracy loss; official guidance/recipes for FP8 inference.
- Support for multiple quantized formats (GGUF and Q3/Q4/Q5/Q6 variants) to reduce RAM and enable CPU/edge deployment.
- Tooling and integration examples: SGLang server launch command, compatibility notes for Transformers v5, and community support in vLLM, xllm, LLaMA-Factory ecosystems.
- Optimized for high-performance inference engines and diverse accelerators (GPU clusters, CPU with AVX/ARM inference repacking).
Best for
- Multimodal Document Analysis: Extracting, summarizing, and reasoning over long, image-heavy documents (reports, contracts, scientific papers) that include tables, figures, and complex layouts.
- Visually Grounded Content Generation: Producing reports, presentations, or annotated documents that combine generated explanatory text with synthesized or retrieved images in a single coherent output.
- Agent-Oriented Workflows: Powering multimodal agents that call search/retrieval tools or external APIs during generation to fetch additional context, verify facts, or perform actions.
- On-Device/Edge Inference: Deploying the GLM-4.6V-Flash variant locally in quantized GGUF formats for low-latency, offline use cases like desktop assistants or embedded inference.
- Visual Question Answering at Scale: Answering complex, multi-page questions about documents, spreadsheets, or slide decks by leveraging the long-context window and layout awareness.
- Enterprise Knowledge Ingestion: Indexing and retrieving multimodal enterprise content (manuals, design docs, invoices) to enable question answering and automated report generation.
- Multimodal content creation (documents with interleaved images and text, presentations, marketing assets).
- Multimodal agents that call external tools, search, and retrieval during generation (RAG + tool-enabled workflows).
- Long-context document understanding, summarization, and knowledge extraction across very large inputs.
- Local/edge deployment for low-latency applications using GLM-4.6V-Flash and quantized GGUF weights.
- Cloud-hosted APIs and product features (chat, code assistance, visual QA) leveraging the full-size 106B model.
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.