LangSmith
8.0#1 in llm gateway software$39 usage-basedFree planWebAPILinuxmacOS
VisitLangSmith vs vLLM Semantic Router
vLLM Semantic Router
5.8#30 in llm gateway softwareAPILinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | LangSmith | vLLM Semantic Router |
|---|---|---|
| Purpose | LangSmith is a commercial agent engineering platform for building, testing, deploying, monitoring, and improving AI agents. | vLLM Semantic Router is an open, programmable decision layer that selects or combines models for each call according to policy. |
LangSmith plans
- DeveloperFree
- Plus$39 a month
- EnterprisePriced on request
vLLM Semantic Router plans
No prices published.
Pick LangSmith if…
LangSmith suits teams building or operating AI agents that need evaluation, prompt workflows, and observability. It supports both hosted and self-hosted deployment options.
Pick vLLM Semantic Router if…
You want what its maker publishes above — check its page for the details.