Catalog Systems AI sandbox & runtime environments CodeSandbox AI

CodeSandbox AI

https://codesandbox.io/ai

CodeSandbox is the long-running browser-based dev sandbox (founded 2017 by Ives van Hoorne + Bas Buursma in Amsterdam). **Acquired by Together AI Oct-2024** to anchor Together's agent-execution stack alongside its GPU inference cloud. AI features include AI-assisted coding, agent-execution sandboxes, and instant-preview for AI-generated apps.

Acquired. acquired by Together AI Source · Alternatives and migration notes →

Acquired · Verified 2026-10-26 · fresh as of 2026-10-26 · 25 cited facts, 0 with a third-party source · 1 recorded change · Suggest a correction

At a glance

Type
Browser-based dev sandbox with AI-agent features (acquired by Together AI 2024) vendor fix
Tier
T2
Section
AI sandbox & runtime environments
Created
2017 (founded); 2024-10 (Together AI acquisition) vendor fix
Latest release
not applicable — sandbox/runtime, not memory product fix
License
not applicable — not OSS fix
GitHub
not applicable — no GitHub repo fix
Pricing
Free + Pro ($12/mo) + Team + Enterprise; commercial CodeSandbox SDK for agent integration vendor fix
Funding
~$15M pre-acq raised; Together AI acquired Oct-2024 (terms undisclosed) vendor fix
Freshness
2026-10-26 fix
Layer
agent-infra repo fix
Licensing
commercial vendor fix
Deployment locus
cloud vendor fix
Platform vs product
both vendor fix
SDK languages
typescript registry fix

When to use

Optimised for: browser-based AI dev experience + instant-preview for agent-generated apps

Anti-fit: not applicable — sandbox/runtime, not memory product

Pros & cons

Pros

Together AI post-acquisition gives massive GPU + LLM-inference flywheel; 4M+ pre-acq dev base; instant-preview for AI-generated apps is genuinely useful for code-agent UX.

Cons

Post-acq direction still settling; competes with own customers (Bolt.new / Stackbit / Vercel preview); narrower than e2b for headless-agent sandbox use case.

Claims & capabilities

Founded 2017 Amsterdam by Ives van Hoorne + Bas Buursma; **Together AI acquisition Oct-2024**; >4M developers reported pre-acq; CodeSandbox SDK launched 2024 for agent integration

Technical surface

API surface
REST + CodeSandbox SDK (TS / JS); WebContainer-style isolation
Backend storage
not applicable — sandbox/runtime, not memory product
Deployment
Managed-only — SaaS; SDK also offered as Together Code Sandbox
Embedding model
not applicable — not a memory product
Multi-tenancy
not applicable — sandbox/runtime, not memory product
MCP
not applicable — sandbox/runtime, not memory product
A2A
not applicable — sandbox/runtime, not memory product
OpenTelemetry
not applicable — sandbox/runtime, not memory product

Alternatives to CodeSandbox AI → live options ranked by shared design, licence, hosting and MCP support

Similar systems

Other ai sandbox & runtime environments in the catalog, ranked by inbound references.

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  • e2b T1

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  • Modal Sandboxes T1

    Modal Labs ships a serverless container platform with first-class GPU support; Sandboxes feature (2024) adds ephemeral, AI-agent-friendly compute sandboxes. Founded 2021 by Erik Bernhardsson (ex-Spotify ML, author of Luigi + Annoy). $87M total raised through Series B (Lux Capital + Redpoint + Definition + Amplify). Used by major LLM apps for batch inference + agent code execution.

  • Anchor (Anchor Browser) T3

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  • Browserless.io T2

    Browserless is a headless-browser-as-a-service — managed Chromium / Playwright / Puppeteer endpoints for web scraping, screenshots, PDF generation, web automation. Increasingly used as substrate for browser-agent products. Founded 2017 by Joel Griffith. Bootstrapped + small seed. Distinct from Playwright OSS — Browserless ships managed Chromium farms with anti-bot circumvention.

  • Coder.com T2

    Coder.com (formerly Coder Technologies) provides enterprise self-hosted cloud development environments — VS Code Server + dev workspaces on K8s / VMs. $30M Series B 2021 (Redpoint + Founders Fund + Coatue). Founded 2017 by Kyle Carberry + Ammar Bandukwala. 2024 launched 'Coder AI' for agent-execution inside workspaces. Self-hostable AGPL OSS + commercial enterprise.

Sources (24 cited facts, 0 third-party)

Each fact links to the page it came from; the badge says who published it (how to read sources).

What changed

Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)

  1. 2026-10-26
    • Deployment “Managed cloud (SaaS)” → “Managed-only — SaaS; SDK also offered as Together Code Sandbox” source
    #258