langsmith has 100.2M monthly downloads and 952 GitHub stars. Version 0.9.8 supports Python 3.10+, first published in 2023.
It is actively maintained under a permissive license, last released in Jul 2026.
It is built on top of anyio, distro and httpx. It is used by 400 tracked packages, including langchain-core, langchain-community and langchain-classic.
GitHub topics include evaluation, language-model and observability.
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Dependencies
- anyio >=3.5.0
- distro >=1.7.0
- httpx <1,>=0.23.0
- orjson >=3.9.14
- packaging >=23.2
- pydantic <3,>=2
- requests >=2.0.0
- requests-toolbelt >=1.0.0
- sniffio >=1.1
- typing-extensions >=4.0.0
- uuid-utils <1.0,>=0.12.0
- websockets >=15.0
- xxhash >=3.0.0
- zstandard >=0.23.0
30 optional dependencies
- cachetools[pipecat]
- cachetools[livekit]
- claude-agent-sdk[claude-agent-sdk]
- google-adk[google-adk]
- google-adk[google-adk-live]
- langsmith-pyo3[langsmith-pyo3]
- livekit-agents[livekit]
- openai[openai-realtime]
- openai-agents[openai-realtime]
- openai-agents[openai-agents]
- opentelemetry-api[otel]
- opentelemetry-api[strands-agents]
- opentelemetry-api[pipecat]
- opentelemetry-api[livekit]
- opentelemetry-exporter-otlp-proto-http[otel]
- opentelemetry-exporter-otlp-proto-http[strands-agents]
- opentelemetry-exporter-otlp-proto-http[livekit]
- opentelemetry-exporter-otlp-proto-http[pipecat]
- opentelemetry-sdk[pipecat]
- opentelemetry-sdk[livekit]
- opentelemetry-sdk[otel]
- opentelemetry-sdk[strands-agents]
- pipecat-ai[pipecat]
- pytest[pytest]
- rich[pytest]
- strands-agents[strands-agents]
- strands-agents-tools[strands-agents]
- vcrpy[vcr]
- vcrpy[pytest]
- wrapt[google-adk]
Used By
- langchain-core
- langchain-community
- langchain-classic
- langgraph-api
- deepagents
- openevals
- langmem
- embedchain
- kagent-langgraph
- nvidia-nat-langchain
- gpt-researcher
- langchain-together
- hindsight-api-slim
- langsmith-fetch
- deepagents-cli
- langchain-qwq
- langsmith-mcp-server
- deepagents-code
- intentkit
- langchain-snowflake
- h4ckath0n
- rasa-pro
- deepagents-azure-blob-backend
- wet-mcp
- attune-ai
- ai-infra
- trajectory-sdk
- open-deep-research
- fudstop
- langsmith-cli
- axmp-ai-agent-core
- autorag
- langbot
- sicily
- wayfinder-agents
- langswarm
- zscaler-mcp
- weco
- federate
- fin-infra
- ai2-scholar-qa
- yamlgraph
- bog-agents-cli
- act-workflow
- cneura-ai
- bog-agents-daemon
- teradata-mcp-server
- agentops-cockpit
- gemini-rotate
- langgraph-api-inmem