ByteDance Open Source

Announcing new releases and the latest information about ByteDance open source projects.

[Rspack @rspack_dev]

Less duplicate code. Smaller bundles. 📦

We've improved Rspack's chunking algorithm to reduce duplicate modules across chunks.

In a large production project, this change resulted in:
• -2.53% less raw JS size
• -1.51% fewer chunks

[OpenViking @openvikingai]

You may need OpenViking Gateway as your new memory-enabled LLM Hub: https://t.co/Aw0gPVkPIh

[OpenViking @openvikingai]

From Assistant to Colleague: Building Multi-User Agents with OpenViking's Peer Mode (https://t.co/mAhE5EwaVK)

[OpenViking @openvikingai]

你是否听说过“知识编译”，也就是将一个形态的知识转化为另一个形态的知识，例如：将团队周报转换为月报，将文献调研转换为 LLM Wiki，将工作记录转换为 Skill。OpenViking 提出全新 ov compile 命令，将复杂的知识工程转换为高���可控可理解的“知识编译”过程。https://t.co/9VkNq1HLdm

[Rspack @rspack_dev]

The integration between TanStack and Rspack continues to improve 🚀

Have you tried it yet? We’d love your feedback!

[Rspack @rspack_dev]

Rslint v0.7 is here🦀 TypeScript-first, ESLint-compatible, and 30% faster than v0.6

[Rspack @rspack_dev]

🦀 Rspack 2.1 is here!

⚡️ 16% faster builds than 2.0
⚛️ Rust React Compiler: 7–13× faster than Babel
🎨 Improved built-in CSS
📂 import.meta.glob
🔵 TypeScript 7 RC support
🧩 Source Phase Imports

[Midscene @midscene_ai]

One skill. Five platforms.

Midscene Skills gives Claude Code & Codex eyes + hands across browser, desktop, Android, iOS and HarmonyOS.
Same chat-driven prompt. No MCP setup.

[Rspack @rspack_dev]

🌲Rspack's tree shaking just got smarter 🦀

Two recent optimizations remove more unused code:

1. Inlined booleans can make branch-local dependencies inactive
2. Namespace default re-exports now preserve property-level usage

More precise bundles, less dead code

[ByteDance Open Source @ByteDanceOSS]

Everyone is building AI agents.
Very few are building the infrastructure needed to actually run and train them at scale.

Today the veRL team at ByteDance open-sourced Uni-Agent: A unified framework for building, running, and training real-world agents.

Why this matters:
Most agent frameworks focus on orchestration.
Uni-Agent focuses on infrastructure.
It unifies:
- agent execution
- environment interaction
- large-scale concurrency
- RL training
into one reusable stack.

That means the same system can scale from:
prototype → deployment → RL optimization
without rebuilding the stack every time.

The project is still early, but the direction is extremely promising for:
- coding agents
- browser agents
- computer-use agents
- large-scale agent training

Open sourced by the team behind veRL (21k+⭐).
Repo: https://t.co/VM2ah2dImZ

Would love feedback, contributors, and early adopters.
#OpenSource #AI #AIAgents #RL #LLM #ByteDance

[ByteDance Open Source @ByteDanceOSS]

🚀 Lance is released!
Lance is a native unified multimodal model from ByteDance Intelligent Creation Lab, supporting image/video understanding, generation, and editing in a single framework.

With 3B activated parameters, Lance explores multi-task synergy for unified multimodal modeling, covering X2T, X2I, and X2V tasks with strong performance across generation, editing, and understanding benchmarks.

Check it out and , give a star:
Homepage: https://t.co/67ONkLIwXl
arXiv: https://t.co/yhRXjh92ME
HuggingFace: https://t.co/oAEPPhpK9y
GitHub: https://t.co/KiZNTkI58e

#Lance #MultimodalAI #UnifiedMultimodalModel #ImageGeneration #VideoGeneration #OpenSource

[Rspack @rspack_dev]

🦀Rstest 0.10.0 released! 🚀
Faster. Leaner. More reliable~

⚡ worker_threads-based pool
🎯 --changed / --related test runs
💾 Persistent build cache
🧠 Memory-aware worker spawn
🔇 Silent passed test consoles
🔍 Profile test runs with --trace

[OpenViking @openvikingai]

Get Inside the OpenViking Context Database Architecture https://t.co/7CqO19NEPC

[Midscene @midscene_ai]

Two years building Midscene.js, we made a bet we should've made earlier:

UI automation has to move from "reading the DOM" to "looking at the screen."

So in our 1.0 release (Dec 2025), we dropped DOM compatibility entirely.

[ByteDance Open Source @ByteDanceOSS]

Inside AIO Sandbox (Part 3): Integrating AIO Sandbox with NVIDIA OpenShell https://t.co/53ZlgJYhAq

[Rspack @rspack_dev]

🦀 Install any of Rstack Skills instantly:

```
npx skills add rstackjs/agent-skills --skill <skill-name>
```

15+ Skills covering debugging, tracing, upgrading, and analyzing

[Rspack @rspack_dev]

Rspack 2.0 has landed 🦀

The growth since 1.0 is wild:

📈 100K → 5M weekly downloads
⚡️ ~100% faster builds
📉 devServer: 192 deps → 1

And new stuff hits hard:

🧩 Pure ESM core, modern ESM library output
⚛️ Experimental RSC support
...

Lean, Fast, Modern Web Bundling 🚀

[ByteDance Open Source @ByteDanceOSS]

From AIO Sandbox: https://t.co/bjLt3UdDqs

[ByteDance Open Source @ByteDanceOSS]

Inside AIO Sandbox (Part 2): Bridging the Gap — Mastering AI Agents with Browser-Use, and MCP by Deepak Vij https://t.co/3okqjtXE3a