{"name":"LangWatch","tagline":"Open-source LLMOps platform for agent observability, evaluations, simulations, and prompt management.","url":"https://langwatch.ai","category":"dev-infra","pricing":"freemium","price_note":"Developer plan is free forever with 50,000 events per month, 14-day data access, and 2 users; Growth is $34 per core-seat per month; Enterprise is custom.","free_tier":true,"open_source":true,"api":true,"self_host":true,"limitations":["Radar: not field-run in this catalog wave.","Developer plan limits data access to 14 days, 2 users, and 3 scenarios, 3 simulations, and 3 custom evals each."],"receipts":["https://langwatch.ai","https://docs.langwatch.ai","https://langwatch.ai/pricing"],"affiliate":"none","evidence_tier":"radar","momentum":"steady","featured":false,"last_verified":"2026-09-01","observed_by":"catalog-radar","slug":"langwatch","canonical_url":"https://noemium.com/tools/langwatch/","attribution":"Noemium catalog data is licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). See https://noemium.com/method/ for how entries are verified."}