- vendor
- LangChain
- whatItIs
- Framework-agnostic agent observability platform for tracing, evaluating, and deploying agents with LLM-as-judge evals and human-in-the-loop approvals.
- hosting
- both
- pricingModel
- per-trace: Free 5k/mo, Plus $39/seat, Enterprise custom
- modelProviders
- agnostic
- stateModel
- trace-based
- toolModel
- SDK + dashboard
- includesBrowser
- false
- includesMemory
- false
- longRunning
- unlimited ingestion
- hitlSupport
- true
- observability
- tracing + evals + deployment (Fleet)
- maturity
- ga
- launched
- 2023
- notes
- Fleet rebranded from Agent Builder 2026-Q1; aggregates costs across full agent workflow.
