Sandbox Arena
A public head-to-head arena for cloud code-execution sandboxes, modeled after LMArena/Design Arena but with live sandbox races as the artifact.
- Repo: https://github.com/Kevin-Liu-01/Sandbox-Arena
- Live site: https://sandboxarena.vercel.app
- Status: private repo, live deployment verified 200 on 2026-06-25.
- Core analogy: LMArena for code-execution sandboxes. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md; raw/github/deployment-check-2026-06-25.tsv
What it does
Sandbox Arena lets users pick a workload, run two sandbox providers side by side, watch live streaming logs and test results, then compare objective metrics and optional crowd votes. Providers are anonymized as Sandbox A/B during a run and revealed after voting. Every match has a deterministic replay permalink from the match seed. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
The contenders list includes Dedalus, E2B, Modal, Daytona, Runloop, Tensorlake, Blaxel, Declaw, CodeSandbox, Vercel Sandbox, Cloudflare, Hopx, and Northflank. The goal is credibility, not host propaganda: the README explicitly says the host should lose some workloads and publish methodology clearly. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
Product surfaces
| Surface | Purpose |
|---|---|
/arena |
Blind head-to-head race with SSE logs, phase ticks, HUD metrics, vote, reveal, and replay. |
/leaderboard |
Objective composite and crowd Elo side by side, never blended. |
/compare |
Stateless/stateful and lightweight/compute-heavy field map plus capability/pricing comparison. |
/byo |
Bring-your-own task composer for command sequences plus verifiers, gated behind auth/quota. |
/methodology |
Methodology, benchmark sources, scoring, and run conditions. |
Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
Architecture
The core abstraction is a SandboxProvider adapter interface. A provider is in the arena if it implements create, exec, destroy, and estimateCost. The orchestrator races two adapters concurrently and multiplexes their output into one event stream tagged by side. Scoring separates objective composite from crowd Elo, and the store tracks matches, runs, votes, and ratings. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
Default public mode is deterministic simulation seeded from provider performance profiles. Live mode is explicit: ARENA_LIVE=1 plus credentials activates live adapters for Dedalus and E2B. There is no silent fallback; missing credentials throw loudly. A local executor path can run workloads on the operator's machine with ARENA_LOCAL_EXEC=1. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
Why it matters
Sandbox Arena is the external proof layer for Agent Machines and Dedalus Machines - Positioning & Pitch. Instead of claiming a sandbox is faster or more reliable, it turns the comparison into a reproducible race with public methodology, workloads, cost, reliability, and replayable results. That makes it a Proof-Carrying Work product for the sandbox market. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
The credibility rule is the page's most important principle: if a win needs an asterisk, the asterisk ships louder than the win. That is the right posture for any Dedalus-adjacent benchmark surface. Source: raw/github/readmes-2026-06-25/Sandbox-Arena.md
Current Evidence (2026-07-01)
This page was refreshed against Kevin's live GitHub inventory, pinned repositories, PortfolioMon cards, README scrape, and downloaded portfolio screenshots. Treat this section as the current evidence anchor; deeper interpretation stays in the surrounding compiled truth.
| GitHub repo | Visibility | Language | Stars | Last push | Homepage |
|---|---|---|---|---|---|
| Kevin-Liu-01/Sandbox-Arena | private | TypeScript | 1 | 2026-06-18 | site |
Timeline
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2026-07-01 | Project graph refresh checked this page against Kevin's live GitHub inventory, pinned repos, scraped PortfolioMon cards, READMEs, and portfolio screenshots; current evidence was added above. Source: raw/github/kevin-repos-2026-07-01.json; raw/github/kevin-pinned-repos-2026-07-01.json; raw/sites/kevinliu-biz-2026-07-01/portfolio-projects.json
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2026-06-16 | GitHub repo created. Source: raw/github/kevin-repos-2026-06-25.json
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2026-06-18 | Repo updated with the public arena framing and Next.js implementation. Source: raw/github/kevin-repos-2026-06-25.json
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2026-06-25 | Live deployment verified at https://sandboxarena.vercel.app and page added to the project portfolio. Source: raw/github/deployment-check-2026-06-25.tsv; User request, 2026-06-25