Daytona vs semantic
Daytona offers container sandboxes and VM sandboxes with their own kernel. [1] It runs them in its cloud, or on runner nodes in your infrastructure that Daytona's control plane manages (BYOC). [2]
Daytona keeps secrets out with a placeholder token that an outbound proxy swaps for the real value. [4] Its audit logs cover organization and platform activity, not commands inside a sandbox. [5] Semantic enforces file, Git and SSH permissions outside the agent and logs what the agent does inside.
| Daytonamanaged cloud · BYOC | Semantic (smx)microVM + policy on your machines | |
|---|---|---|
| Isolation | Containers or VMs with own kernel [1] | One microVM per agent, own kernel |
| Where it runs | Managed cloud; BYOC runners with Daytona's control plane [2] | Managed private beta; on-prem for enterprise (contact us) |
| Egress rules | CIDR and domain allowlists, or block-all [3] | Security profiles enforced by host firewall; metadata and link-local always closed |
| Credentials kept out | Placeholder token swapped by an outbound proxy [4] | Git tokens, SSH keys and model sign-ins stay on the host |
| File, Git, SSH permissions | not documented | Per path, repo, branch and SSH host; deny beats allow; enforced on the host |
| Tamper-evident agent log | Partial: platform audit logs, not actions in the sandbox [5] | Hash-chained log of runs, events and refusals; read with smx agent logs |
| Snapshots, pause/resume | Stop, archive, recover; memory pause and fork on VM sandboxes [6] | Snapshot, pause and resume with memory, disk and running processes |
| Local hosts (Linux / WSL2 / macOS) | not documented | Linux (KVM) and Windows via WSL2; macOS planned |
| License | Public repo no longer maintained; core moved to a private codebase [7] | Proprietary (private beta) |
Which one fits
When Daytona fits better
- You want SDKs in Python, TypeScript, Ruby, Go and Java. [8]
- You want a choice between containers and VMs per sandbox. [1]
- You want a managed fleet that can also run on your own runners. [2]
When Semantic fits better
- Code, data and credentials must stay in your environment; on-prem is available for enterprise (contact us).
- Agents work on your repos and you need branch-level Git and per-path file permissions enforced outside the agent.
- You need a tamper-evident log of what the agent did inside the sandbox, including refusals.
Who runs the control plane
Daytona BYOC puts runners in your infrastructure, managed by Daytona's control plane. [2] Semantic runs as a managed private beta, with on-prem for enterprise (contact us); the policy is held and checked on the sandbox hosts.
Open source status
Daytona's public repository says it is no longer maintained and that core development moved to a private codebase; the existing code stays available under its license. [7]
Questions
Does Daytona log what the agent runs?
Its audit logs cover sandbox lifecycle, user access and API keys, not commands inside the sandbox. [5] Semantic logs agent actions and refusals inside the sandbox in a hash-chained log.
Can Daytona snapshot memory?
Yes, for VM sandboxes: pause and resume with memory, memory snapshots and fork. [6] Semantic snapshots, pauses and resumes with memory, disk and running processes.
Sources
- Daytona isolation · last verified 2026-10-27
- Daytona bring your own compute · last verified 2026-10-27
- Daytona network limits · last verified 2026-10-27
- Daytona secrets · last verified 2026-10-27
- Daytona audit logs · last verified 2026-10-27
- Daytona snapshots · last verified 2026-10-27
- Daytona GitHub repository · last verified 2026-10-27
- Daytona docs · last verified 2026-10-27