Real-time collaboration inside your own codebase
Start a live collaboration session directly from your repo. Edit together, review AI-generated changes, see every decision, and sync safely back — all without touching a single Git command.
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Traditional tools force everyone to work alone
Small teams need collaboration that matches the speed of ideas. But the tools we have now actively work against that.
You can't work together in real-time
Your IDE is a single-player experience. Collaboration happens in PRs, Slack threads, and doc comments. Never inside the actual codebase where the real work happens.
Git gatekeeping breaks teams apart
Want to collaborate? First master branches, merges, rebases, and conflict resolution. Non-technical teammates are locked out. Even experienced devs waste hours on Git ceremonies.
AI reasoning vanishes into thin air
When agents generate code, the reasoning evaporates. You get a diff showing what changed, but no trace of why the AI made those decisions or what alternatives it considered.
ARENA is the workspace where teams collaborate inside their actual codebase
Push a button on GitHub → Arena opens an "episode" → everyone joins the same shared workspace to think, prototype, edit, review, and ship together.
Start Instantly from GitHub
Press "Start Episode" in the repo. Arena creates an isolated, fully versioned collaboration session. No git commands, no branching, no environment setup.
Real-Time Collaborative Editing
Arena opens a web workspace that mirrors your codebase. Edit Markdown docs or any tracked files together in real time. Like Google Docs, but for your repository.
AI Provenance for Every Change
Arena captures the full lineage of edits: human vs. AI, which agent did what, where every change came from, and why it happened. Full transparency built in.
Agentic Transcripts
Every AI-originated change includes the prompting, the agent's reasoning steps, decision summaries at key points, and direct linkage to file changes.
Time Travel Any Episode
Replay the entire session from start to finish. Jump to any moment, view diffs, inspect decisions, and understand how the state evolved.
Bring Episodes Local
Arena shows you a single CLI command: arena episode checkout <id>. Running it restores the exact working state on your machine.
Built-In Huddles
Jump into a live huddle inside the episode with voice, video, and screen sharing. No Zoom or Meet required. Communication stays inside the workspace.
Sync Safely Back to GitHub
Arena writes back cleanly, minimizes merge conflicts, preserves provenance and transcripts. GitHub remains your single source of truth.
Open-Source Daemon
Arena includes an auto-updating, open-source daemon that runs locally, powers real-time collaboration, and ensures reproducible sessions across the ecosystem.
How It Works
Collaboration inside the repo, not around it. Zero git expertise required.
Start Episode from GitHub
Push the button → start the episode → collaborate instantly
Press "Start Episode" in any GitHub repo. Arena creates an isolated, fully versioned collaboration session. No git commands, no branching ceremony, no environment setup.
Start Episode
One-click from your GitHub repo
3 collaborators active
Edit together in real-time
Arena opens a web workspace that mirrors your codebase. Edit files collaboratively in real time—like Google Docs, but for your repository. Everyone sees changes as they happen.
Full AI provenance & transcripts
Every change is auditable and explainable. See human vs. AI edits, which agent did what, the reasoning behind decisions, and decision summaries at key points. You always know why something changed.
Refactored authentication logic
Reasoning: Consolidating duplicate code paths...
$ arena episode checkout abc-123
Bring it local, sync back safely
One CLI command restores the entire episode on your machine. When you're done, Arena syncs everything back to GitHub cleanly—minimizing conflicts and preserving all provenance.
Who ARENA is for
Startups & Visionary Founders
Early-stage companies who need to turn high-level vision into working software quickly. Collaborate directly in your own codebase — without wrestling with git or ceremony — and ship features in hours, not sprints.
Agencies & Consultants
Teams who prototype live with clients. Arena gives you an instant shared environment where everyone can think, edit, and iterate together in the repo — dramatically reducing project friction and feedback loops.
AI-First Product Teams
Teams building with agents from day one. You need real-time collaboration, AI provenance, and full decision traceability — all tied directly to your codebase.
Why ARENA is different
Episodes become reusable knowledge artifacts. Collaboration sessions become a durable part of your development history.
Collaboration inside the repo, not around it
Arena unifies code, conversations, decisions, and provenance in one environment. Work directly in your codebase—not in separate tools that surround it.
Zero git expertise required
Push the button → start the episode → collaborate instantly. No branching, no merge conflicts, no git ceremonies. Arena handles versioning invisibly.
Every change is auditable and explainable
You always know what changed, who changed it, what the AI did, and why. Full provenance and agentic transcripts built in from day one.
Episodes as knowledge artifacts
Replay, study, share, and build on past episodes. Time travel through decisions. Your collaboration becomes institutional knowledge.
Join teams building at the speed of thought
Choose your Arena
Start with pay-as-you-go simplicity. Scale to advanced team features when you're ready.
ARENA Team
Perfect for small teams getting started
Core features free. Only pay for voice, video & transcription.
ARENA Group
For teams that need advanced collaboration
Everything in Team, plus advanced features
Need enterprise features or custom deployment? Contact us
Start collaborating today
Arena makes it effortless for small teams to work together at the speed of thought — directly inside their codebase, with full transparency and zero ceremony.
Join the Private Beta
Be among the first to experience real-time collaboration inside your GitHub repos. Full AI provenance, episode time travel, and zero git expertise required.
Coming soon:
- • In-IDE episode visibility
- • Advanced time travel features
- • Enterprise team management
The future of collaborative development starts here
Arena is where real-time teamwork, AI reasoning, and code provenance live together seamlessly. Episodes become the core primitive of modern development.