LangSmith
8.0#1 in llm gateway software$39 usage-basedFree planWebAPILinuxmacOS
VisitLangSmith vs PromptSource
PromptSource
5.6#9 in prompting toolWebAPISelf-hosted
VisitWhat both publish
| Fact | LangSmith | PromptSource |
|---|---|---|
| Purpose | LangSmith is a commercial agent engineering platform for building, testing, deploying, monitoring, and improving AI agents. | PromptSource is a toolkit for creating, sharing, and using natural language prompts. |
LangSmith plans
- DeveloperFree
- Plus$39 a month
- EnterprisePriced on request
PromptSource 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 PromptSource if…
PromptSource suits developers who need prompt templates, testing, metadata, and API access. It is also useful for contributors creating prompts for additional datasets.