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

Joined December 2022
Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)Photo by ByteDance Open Source (@ByteDanceOSS)
ByteDance Open Source retweeted
Midscene Action now supports Sign in with ChatGPT (SIWC). Store your session credentials in GitHub Secrets and run Midscene regression tests in CI. The Action handles session refresh, so you don't have to write your own auth scripts.
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ByteDance Open Source retweeted
Meet Midscene Test: an E2E testing framework built for natural language. Write your test cases as plain-language steps that AI runs by looking at the screen, then plug in your own business logic as Nodes to make it your team's own E2E framework. 🧪 midscenejs.com/midscene-test…
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ByteDance Open Source retweeted
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
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ByteDance Open Source retweeted
The integration between TanStack and Rspack continues to improve 🚀 Have you tried it yet? We’d love your feedback!
TanStack Devtools now officially support rspack! 🚀 And you can also make your trigger a floating bubble which you can move across your screen! Or just play with it and throw it around!
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ByteDance Open Source retweeted
Rslint v0.7 is here🦀 TypeScript-first, ESLint-compatible, and 30% faster than v0.6
Rslint v0.7 it out! ⚡ Based on TS 7 stable 📦 400+ built-in rules 🚀 30% faster than v0.6 🚀 Faster LSP feedback ✅ Better ESLint compatibility
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ByteDance Open Source retweeted
🦀 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
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ByteDance Open Source retweeted
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.
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ByteDance Open Source retweeted
🌲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
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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: github.com/verl-project/uni-… Would love feedback, contributors, and early adopters. #OpenSource #AI #AIAgents #RL #LLM #ByteDance
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🚀 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: lance-project.github.io arXiv: arxiv.org/abs/2605.18678 HuggingFace: huggingface.co/bytedance-res… GitHub: github.com/bytedance/Lance #Lance #MultimodalAI #UnifiedMultimodalModel #ImageGeneration #VideoGeneration #OpenSource
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ByteDance Open Source retweeted
🦀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
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ByteDance Open Source retweeted
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.
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Inside AIO Sandbox (Part 3): Integrating AIO Sandbox with NVIDIA OpenShell medium.com/p/inside-aio-sand…
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ByteDance Open Source retweeted
🦀 Install any of Rstack Skills instantly: ``` npx skills add rstackjs/agent-skills --skill <skill-name> ``` 15+ Skills covering debugging, tracing, upgrading, and analyzing
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