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Compare the best LLM gateways of 2026: LangWatch, LiteLLM, Portkey, OpenRouter, Kong, Vercel AI Gateway, Cloudflare, and Amazon Bedrock, on governance, latency, and pricing.
Track Claude Code usage with one command: per-session cost, cache reads and writes as separate token classes, tool calls as spans, and a full session replay.
LangWatch is now open source under Apache 2.0. Plus native voice testing in Scenario, the GA Traces UI, and the new AI Governance beta. See what shipped in May 2026.
LangWatch v3.0 ships a new trace storage backend, Agent Skills for instant evals, automated red teaming in Scenario, SCIM 2.0, and a rebuilt Traces UI.
Most AI agent skills ship untested. See how LangWatch Scenario simulates full multi-turn conversations with a user simulator and judge to catch real failures.
Set up evals, agent simulations, and migrate from Langfuse or LangSmith to LangWatch in one session using Skills and MCP, not a full sprint of work.
Non-technical leaders now write agent simulations in plain language with LangWatch and Claude, testing AI agents before a single customer sees them.
LangWatch Skills let your coding agent instrument tracing, observe production performance, and run tests automatically, no manual setup needed.
The LangWatch MCP server brings agent evaluation into Claude, Cursor, and Copilot, so you version prompts, generate scenarios, and benchmark models in flow.
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