LangWatch Pricing 2026
Complete pricing guide for LangWatch — plans, costs, and free options.
💰 LangWatch Pricing Overview
LangWatch uses a freemium pricing model. Free tier available with optional paid upgrades. Current pricing: Developer €0 forever (50k events/mo, 14-day data access, 2 users, 3 scenarios). Growth €29 per core-seat/mo with 200k events included, then €5 per 100k events and €3/GB beyond 30-day retention. Enterprise is custom, with hybrid, self-hosted or on-prem deployment.. LangWatch is a popular ai agent infrastructure tool known for simulation-based testing, evaluation and observability for ai agents, self-hostable in minutes. You can get started with LangWatch for free and upgrade to a paid plan as your needs grow.
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🔍 Compare Before You Buy
See all 5 alternatives →Comparing LangWatch to similar tools helps you make the best choice for your budget and needs:
Brainbase
FreemiumAgent cloud handling hosting, scaling, evals and observability for agents on any model or harness
Free plan + paid from $500/month
Compare with LangWatch →AgentWatch
FreemiumTwo-line proxy that kills runaway agent loops with runtime budget enforcement and anomaly detection
Free plan + paid from $39/month
Compare with LangWatch →Confident AI
FreemiumHosted LLM evaluation, observability and red-teaming platform from the makers of DeepEval
Free plan + paid from $200/month
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LangWatch Plans & Pricing
Enterprise
is custom, with hybrid, self-hosted or on-prem deployment.
* Pricing information is based on publicly available data and may not reflect current promotions, annual discounts, or regional pricing. Visit the official LangWatch website for the latest pricing.
Is LangWatch Free?
LangWatch offers a free tier that lets you try the platform without any payment. The free plan typically includes core features with usage limits. For power users, paid plans unlock additional features, higher limits, and priority support.
Check LangWatch pricing at the source
The breakdown above is our summary of LangWatch's published pricing, not a quote. Plans, limits and what each tier includes change without notice — confirm on LangWatch's own pages before you buy.
Official LangWatch site ↗We do not represent LangWatch and these links are not paid placements.
Is LangWatch Worth It?
LangWatch is a freemium ai agent infrastructure tool that offers 7 key features including Simulated users driving multi-turn text and voice scenarios, Scenarios authored in plain language from your editor, Local and CI runs from the same suite. LangWatch tests AI agents by simulating users against them rather than asserting on fixed input-output pairs. The premise is that an agent can reach the same goal down a hundred different paths, so hand-written tests only ever cover a handful — and the ones that break in production are the paths nobody imagined. A LangWatch scenario describes the behaviour you want in plain language; a simulated user then pushes the agent turn after turn, in text or in voice, the way a real user would. The same scenarios run locally while you build and on every pull request in CI, with no separate setup. Evaluation is not a thumbs-up score: the judge reads the entire trace, expands each step, and returns a verdict with the reasoning attached. Tool calls, skills and MCP servers are all traced, and each can be mocked or fixtured so a run is deterministic. Around that sit the pieces you would otherwise assemble yourself — LLM observability with per-step cost and latency, prompt versioning with GitHub sync and A/B tests, red-teaming that probes for jailbreaks and unsafe tool calls, and an AI governance layer issuing virtual keys with budgets, routing policies and an audit trail. A production trace can be converted into a simulation, which is the fastest honest way to prove a bug is actually fixed. It also traces coding-agent usage — Claude Code, Codex and others — for token spend visibility. Self-hosting takes about 15 minutes.
✅ LangWatch is a good choice if you need:
- •Simulated users driving multi-turn text and voice scenarios
- •Scenarios authored in plain language from your editor
- •Local and CI runs from the same suite
- •Trace-reading judge that explains its verdict
- •Mockable tool, skill and MCP calls for deterministic runs
💡 Value Assessment
With a free tier available, LangWatch is an easy recommendation for anyone looking to try ai agent infrastructure tools without financial commitment. The paid plans offer good value for power users who need the additional features and higher usage limits.
LangWatch Key Features
LangWatch comes packed with features that make it a strong contender in the ai agent infrastructure space. Here's what you get:
Audio and voice features enhance the way you interact with LangWatch.
Powered by advanced AI models, LangWatch delivers intelligent content generation capabilities.
Available in the free plan with limits — Local and CI runs from the same suite helps you work more efficiently with LangWatch.
Powered by advanced AI models, LangWatch delivers intelligent content generation capabilities.
Available in the free plan with limits — Mockable tool, skill and MCP calls for deterministic runs helps you work more efficiently with LangWatch.
Available in the free plan with limits — Prompt versioning with GitHub sync and A/B tests helps you work more efficiently with LangWatch.
Work together with your team in real-time with built-in collaboration features.
LangWatch Alternatives & Their Pricing
Considering alternatives to LangWatch? Here's how competing tools compare on pricing:
Brainbase
FreemiumAgent cloud handling hosting, scaling, evals and observability for agents on any model or harness
Pricing: Individuals is $0/month with $25 in free credits, unlimited deployed agents, 7 days of data retention, and versioning, observability and community support. Teams is $500/month with $500 in credits included, unlimited deployed agents, 30 days of data retention, and adds orchestration, evaluations and priority support. Enterprise is custom-priced with custom credits, unlimited deployed agents, custom data retention, SSO, RBAC, hybrid deployment and dedicated support. Across all tiers you pay only for what you run beyond included credits. The product is generally available; agents are defined in a short YAML file specifying model and harness, both of which are intended to be swappable.
AgentWatch
FreemiumTwo-line proxy that kills runaway agent loops with runtime budget enforcement and anomaly detection
Pricing: Free: 50,000 requests/month, runaway-loop detection, budget enforcement, unlimited sessions and a basic dashboard, no credit card. Starter is $39/month for 150,000 requests/month, adding advanced analytics, edge prompt caching, custom anomaly rules, team budgets and Slack webhook alerts. Pro is $99/month for 500,000 requests/month, adding agent-level budgets, audit-log retention, SLA monitoring and shadow-AI discovery. Enterprise is custom, with unlimited requests, a 99.9% SLA, SOC 2 compliance exports, custom data residency, SSO via SAML/Okta, Azure OpenAI and AWS Bedrock support and a dedicated account manager. Model usage itself still bills to your own provider account.
Confident AI
FreemiumHosted LLM evaluation, observability and red-teaming platform from the makers of DeepEval
Pricing: Free Forever $0: full unit and regression testing, evals in dev and CI/CD, tracing, prompt versioning, cloud datasets — limited to 2 seats, 1 project, 5 test runs/week and 1 GB-month of trace spans. Starter $200/mo adds no-code eval workflows, custom metrics, online evals on live traffic, annotation queues, chat simulations, real-time alerting and full API access, with unlimited seats, 5 projects and 5 GB-months of spans then $1 per GB-month. Team $2,000/mo scales it org-wide.
Kelet
FreemiumContinuously diagnoses why LLM apps and agents fail in production and generates the prompt patch
Pricing: Starter is $0 forever: 500 sessions/month, 15-day data retention, full root-cause analysis, prompt patch generation, OTEL and Langfuse integration, and community support. Startup is listed at $400/month but is free during early access — 5,000 sessions included per month with pay-per-session above that, 30-day retention and email support. Enterprise is custom with unlimited sessions, custom retention and integrations, SSO/SAML, an SLA and dedicated support. Human signals and feedback collection are free forever on every tier. No credit card required to start; the vendor states 30 days' notice before pricing changes and grandfathering for early users.
Mastra
FreemiumTypeScript agent framework with observability, evals, and cloud deployment, from the creators of Gatsby
Pricing: The framework is open source and free. Hosted platform tiers exist on the pricing page but the tier table is rendered client-side and not readable from a plain fetch, so no figure is quoted here.
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Frequently Asked Questions
Is LangWatch free to use?
Yes, LangWatch offers a free tier that you can use without paying. The free version includes core functionality.
How much does LangWatch cost in 2026?
As of 2026, LangWatch pricing is: Developer €0 forever (50k events/mo, 14-day data access, 2 users, 3 scenarios). Growth €29 per core-seat/mo with 200k events included, then €5 per 100k events and €3/GB beyond 30-day retention. Enterprise is custom, with hybrid, self-hosted or on-prem deployment.. Pricing may vary based on billing cycle (monthly vs annual) and region. Visit the official LangWatch website for the most current pricing.
Does LangWatch offer enterprise pricing?
Yes, LangWatch offers custom enterprise pricing with features like dedicated support, custom integrations, enhanced security, and volume discounts. Contact their sales team for a personalized quote.
What are the best alternatives to LangWatch?
Popular alternatives to LangWatch include Brainbase, AgentWatch, Confident AI. Each offers different features and pricing structures. Compare them on AISO Tools to find the best fit for your needs and budget.
Is LangWatch worth the price?
LangWatch is well-regarded in the agent-infrastructure space, offering features like Simulated users driving multi-turn text and voice scenarios, Scenarios authored in plain language from your editor, Local and CI runs from the same suite. Whether it's worth the investment depends on your specific needs, usage volume, and budget. The free tier lets you try it before committing to a paid plan.
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