LangSmith

Tracing and evaluation for LLM apps.

Key facts

• Use case: Agent infrastructure
• TestedTools score: Testing in progress
• Pricing: Developer $0 (1 seat, 5k base traces/mo); Plus $39/seat/mo (10k base traces/mo), then pay-as-you-go; Enterprise custom verified (source, checked 2026-10-15)
• Affiliate: unknown

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Alternatives

• Browserbase
• Mem0
• E2B

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