AI code-execution sandbox
Blaxel
Blaxel is an idle-cost-optimized sandbox that resumes from hibernation in ~25ms with memory and processes intact, and charges $0 for compute on standby.
Last verified 2026-07-26
Blaxel's play is idle economics: ~25ms resume from hibernation, zero compute cost while a sandbox is paused, and full memory/process state preserved on wake. Tiered XS–XL sizing. An official OpenAI Agents SDK provider.
Key specs
| Isolation | microVM |
| Cold start | 25ms |
| Price / vCPU-hr | $0.083 |
| Pricing model | Tiered + usage |
| GPU | No |
| Session limit | Persistent (hibernation) |
| Persistence | Hibernate/resume with memory + processes |
| Languages | Python, JavaScript/TypeScript |
| MCP support | Yes |
| Integrations | OpenAI Agents SDK |
| Deployment | Managed cloud |
| Free tier | Free tier |
| Resume time | ~25ms |
| Tier range | $0.083–$1.32/hr |
Strengths
- ~25ms resume
- $0 idle compute
- State preserved on wake
Trade-offs
- Smaller ecosystem
- Newer entrant
Best for: Bursty agent workloads where idle cost dominates the bill.
Head-to-head
Alternatives to Blaxel
E2B — AI code-execution sandboxDaytona — AI code-execution sandboxModal — AI code-execution sandboxVercel Sandbox — AI code-execution sandbox
Sources: Blaxel ↗
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