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LangSmith logo

LangSmith

Verified

Automation & Workflow Orchestration · API

Production observability, tracing, and evaluation suite for LLM agent workflows

Free tierAPI availableCloud hosted
Pricing: Free Developer tier includes up to 5,000 trace steps per month; Plus and Enterprise plans for production scale.
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Span-01 logo

Span-01

Verified

Developer Frameworks & Infrastructure · API

Open telemetry and LLM observability platform for AI agents

Free tierAPI availableCloud hosted
Pricing: Free developer tier for API telemetry; volume pricing based on span ingestion.
View specifications