LangWatch records 52,098 monthly visits with +73% month-over-month growth and Contact for Pricing pricing. Postman records 1,764,877 monthly visits with -7.6% growth and Freemium pricing.
Agent observability, evals and governance for AI platform teams
Design, test, and govern APIs — now with AI agents in the loop
| Dimension / Metric | | |
|---|---|---|
| Official Domain | langwatch.ai | postman.com |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 52.1K (52,098) | 1.76M (1,764,877) |
| MoM Traffic Delta |
| +21.98K (+73%) |
| -144.52K (-7.6%) |
| Primary Market & Share | 🇺🇸 United States (46.7%) | 🇮🇳 India (22.9%) |
|---|
| Direct Visits / mo | 28.99K | 580.23K |
|---|
| User Rating | 4.6 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|
Agent observability, evals and governance for AI platform teams
Full GenAI spec support means traces from LangChain, LangGraph, CrewAI, Mastra, Pydantic AI, the Vercel AI SDK and any OTel-compatible stack land in the same view, with tokens, cost and cache accounted per span.
Score single outputs or entire conversations with an LLM judge, custom code or a workflow, run evals from a notebook or UI, and evaluate live production traffic in real time.
Simulated text and voice users push agents turn after turn in realistic scenarios, runnable locally and in CI, with tools, skills and MCP servers traced and mockable.
Route OpenAI, Anthropic, Google, Bedrock, Mistral and other providers through one endpoint using your own keys, with budgets per person, team and customer and around 11 microseconds of overhead.
Design, test, and govern APIs — now with AI agents in the loop
A multi-protocol client with collections, environments, variables, and reusable requests that works for local debugging and for driving automated test suites.
Generates assertions automatically, supports data-driven runs with exported datasets, and executes tests locally, in the cloud, or from CI pipelines via the Postman CLI.
Agent Mode, the Postman CLI agent skills, and a Model Context Protocol server let coding assistants build collections, write tests, and trigger API workflows from inside the editor.
A structured, queryable map of an organization's APIs, collections, and dependencies that lets agents find the right service and understand what a schema change would break.
SpecialistIntegrates API testing and development directly inside your code editor, but lacks Postman's dedicated workspace collection management and documentation publishing.
SpecialistExcels at autonomous multi-file code generation and repository-wide understanding, but is not purpose-built for manual API endpoint testing.
Free / Open-sourcePowerful visual workflow automation and API integration builder, but lacks Postman's granular API request inspection and documentation features.
Free / Open-sourceOpen-source control plane for orchestrating coding agents
SpecialistAutomates end-to-end testing using plain language agents, but lacks Postman's manual debugging and environment variable management tools.
SpecialistOffers superior test case management and CI integration for QA workflows, but lacks native API request crafting and mocking tools.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAI gateway, observability and guardrails for production LLM apps
SpecialistBrings model-agnostic AI coding assistance directly into your IDE, but does not provide Postman's structured API collection management.
SpecialistContext-aware AI that plans, codes, tests, and documents across your engineering workflows
SpecialistExecution-backed code review that runs real API, UI and security tests on every pull request
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
SpecialistIntegrates API testing and development directly inside your code editor, but lacks Postman's dedicated workspace collection management and documentation publishing.
SpecialistExcels at autonomous multi-file code generation and repository-wide understanding, but is not purpose-built for manual API endpoint testing.
Free / Open-sourcePowerful visual workflow automation and API integration builder, but lacks Postman's granular API request inspection and documentation features.
SpecialistOffers superior test case management and CI integration for QA workflows, but lacks native API request crafting and mocking tools.
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAI gateway, observability and guardrails for production LLM apps
SpecialistContext-aware AI that plans, codes, tests, and documents across your engineering workflows
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
