
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Openlayer records 48,415 monthly visits with -6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Relyable records 3,451 monthly visits with -45.5% growth and Freemium, Paid pricing.

Ship bulletproof AI voice agents 100x faster with simulation, evaluation and live monitoring.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | openlayer.com | relyable.ai |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Paid |
| Monthly Visits | 48.42K (48,415) | 3.45K (3,451) |
| MoM Traffic Delta | -3.3K (-6.4%) | -2.88K (-45.5%) |
| Primary Market & Share | 🇺🇸 United States (44.1%) | 🇺🇸 United States (72.6%) |
| Direct Visits / mo | 25.94K | 1.35K |
| User Rating | 4.4 | 4.7 |
| Supported Platforms | Website | Website |
AI governance, testing, and observability for regulated enterprises
Dozens of pre-built evaluations cover quality, safety, security, and performance, with LLM-as-a-judge scorers, session-level metrics, and support for writing your own custom tests against your own data.
Import a repository and run evaluation suites automatically on every change, benchmark each iteration, and block releases when a metric regresses beyond the threshold you define.
Trace every request through multi-step agent workflows, including tool calls and retriever steps, with token counts, latency, cost per request, alerting integrations, and subpopulation analysis.
Register each AI system with an owner, purpose, data sensitivity, and risk tier, score inherent risk across multiple dimensions, and move systems through staged approval gates before they reach production.

Ship bulletproof AI voice agents 100x faster with simulation, evaluation and live monitoring.
Auto-generate test cases from your system prompt or define your own, then run hundreds of parallel simulated conversations with presets for accent, mood and goal.
Score every call against weighted, customisable criteria such as task completion, policy accuracy, sentiment, interruption handling and latency, with seven-day trend tracking.
Every production call is silently logged and scored in real time, with alerts routed to Slack, email, PagerDuty, Opsgenie, Linear or webhooks when something drifts.
Connect Vapi, Retell or ElevenLabs agents in under five minutes using an API key, or route custom agents through the provided number and API.

Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI
Free / Open-sourceAgent observability, evaluation, and continuous improvement for production AI

SpecialistAttack-led AI security testing and red teaming
SpecialistAttack-led AI security testing and red teaming

Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents

Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production

SpecialistThe collaboration layer for AI engineering teams
SpecialistThe collaboration layer for AI engineering teams

Standardize LLM evaluation, observability, and red teaming across your whole org
Standardize LLM evaluation, observability, and red teaming across your whole org

Automated QA, simulation and observability for voice and chat AI agents

SpecialistThe control plane for trusted enterprise agents and models
SpecialistThe control plane for trusted enterprise agents and models
Full-stack observability with an AI SRE agent that fixes issues
Full-stack observability with an AI SRE agent that fixes issues

Enterprise AI governance platform for agents, models, and vendors

The security layer for voice and chat agents: test, red-team, and monitor every call
The security layer for voice and chat agents: test, red-team, and monitor every call

Agentic CX trust platform for testing, monitoring and observing every customer journey
Agentic CX trust platform for testing, monitoring and observing every customer journey