LangSmith Sandboxes
#10 in Observability & EvalsLangchain · 4× · tolest 22. Juli 2026
35
Momentum
LangSmith Sandboxes is a sandbox infrastructure solution from LangChain that reached general availability with Dockerfile snapshots, interactive consoles, TCP tunneling, and standard Linux tooling.
Momentum-Verloop
19.05.17.08.
Features
| Deployment (Self-Hosted/Cloud) | Cloud/SaaS only; self-hosting not currently supported |
| Throughput/Latency | p50 latency under 0.98s via prewarming; hundreds of sandboxes can be spun up in parallel with one SDK call |
| License | Proprietary, commercial cloud product by LangChain (no open-source license documented) |
| Platform | LangSmith cloud platform (SaaS), microVM-based execution environment |
| Price | Usage-based, billed per second of compute time; no public fixed price listed |
| Protocol Compatibility | Sessions over WebSockets, TCP tunneling via CLI, HTTP access via service URLs, standard Linux tools (ssh, scp, rsync, sftp) |
| Release Date | Private Preview in March 2026, GA on May 28, 2026 |
| Supported Models/Providers | Framework/model agnostic; works with any LLM, LangChain/LangGraph, Deep Agents, Open SWE, or no framework at all |