Blog posts

Voice AI for agent orchestration is a crowded category. I ran real call flows on the platforms that matter, including latency, billing, and break points.

AI voice agent accuracy testing measures how correctly an agent hears, understands, and acts on what callers say, across speech-to-text, intent and entity recognition, and end-to-end task completion. Here is how to test each layer with Cekura.

Custom KPIs for voice agent monitoring are team-defined metrics that score live calls against your own business rules. How to build and track them in Cekura.

Hallucination detection for voice AI measures whether a voice agent's spoken answers stay grounded in its knowledge base instead of inventing facts. Here is how RAG grounding checks, factuality evals, and Cekura catch hallucinations before production.

Instruction following evaluation tests whether a voice bot obeys its system prompt across a full call. How Cekura scores instruction adherence at scale.

Outbound voice AI QA is the practice of simulating, scoring, and load-testing an outbound voice agent before it runs a live calling campaign. This guide covers what to test, how to test outbound voice agents at scale, the compliance checks that matter, and where Cekura fits.

Persona-based voice AI QA tests whether a voice agent stays accurate, consistent, and on-brand across many simulated caller personas. Here is how it works, why it matters in 2026, and how Cekura runs it at scale.

Voice bot testing for fintech is the practice of simulating and scoring financial-services voice AI calls against compliance, PII redaction, and no-advice guardrails before and after launch. Here is how Cekura does it.

Compare the 9 best AI virtual receptionist voice technology tools in 2026 across workflow testing, infrastructure behavior, production monitoring, and risk.

Picking the wrong AI voice agent platform can cost you weeks. I tested each one on calls across outbound, support, and enterprise. Here's what survived.

Tested across STT, TTS, and full-stack orchestration in production. So, what is the best AI voice API for developers? It depends on your stack layer.

Not all voice AI APIs handle real-time audio equally. Testing the best voice AI API for real-time audio processing revealed bigger gaps than you'd think.

Voice AI fails when humans push it past training data. Here's how AI voice assistants process language across 4 layers and where each breaks.

LLM as a judge uses a large language model to score AI outputs at scale. Learn how it works, its pros, cons, and best practices for voice and chat agents.

Voice AI automation is replacing phone agents fast, but most deployments end up failing. Find out how the stack works, and which 7 platforms survived testing.

Learn how voice quality testing works, the methods and tools teams use, and how to test speech clarity, latency, audio quality, and real call performance.

I reviewed conversational AI platforms for voice automation and production reliability. These 8 handle testing, monitoring, and deployment best in 2026.

I tested the top conversational AI testing tools and documented what works. Best practices, honest reviews, and updated pricing, all in one place for 2026.

Helicone vs Langfuse vs Cekura aren't competing for the same users. Here are the main differences, and what's best for your voice or chat AI stack in 2026.

Find out how to write a script for AI voice training with templates, recording tips, and QA checks. Use these steps to record cleaner voice samples today.

Bad VoIP calls don't warn you until it's too late. Find out how VoIP testing exposes what's breaking your call quality before your customers hear it first.

Learn how to do a penetration test for voice AI agents across prompts, audio, tool calls, PII leaks, and regression checks before launch. Here are 8 steps.

Most teams pricing AI voice agents are guessing. Here's the 6-model breakdown with real platform costs and examples you can use today.

Voice agent performance testing goes beyond transcripts. This guide covers five methods that catch what manual reviews miss, with examples from real teams.

Braintrust pricing looks simple until overage costs kick in. I broke down every plan, real monthly costs, and where the free tier stops being enough in 2026.

Galileo AI pricing looks simple until you hit production, then issues arise. Here's what the plans actually cost you at real trace volumes in 2026.

Most AI voice assistants fail in production. Learn how to make an AI voice assistant that handles real users, noisy audio, and edge cases from day one.

Retell AI works if you have engineers on your team to spare, but it's not for everyone. Here are 8 Retell AI competitors worth trying that I tested in 2026.

Retell AI pricing per minute looks simple until you see the full bill later. Here's what each component costs and what most teams miss before they go live.

Learn automated QA best practices for voice agent testing with realistic audio, multi-turn flows, release gates, production QA, and regression checks.

Agent performance monitoring shows where AI agents fail across workflows, quality, CX, and voice. See what metrics to track before launch and after release.

How does voice AI work in production? It runs a live loop of transcribing, deciding, and speaking. This guide shows where it breaks and what you should test.

Vapi AI pricing starts at $0.05 per minute for calls, but what you actually pay rises once you add models, telephony, and compliance. Here's a full breakdown.

I tested 9 Vapi alternatives in 2026, so your team doesn't have to. Compare each on pricing, use cases, and trade-offs to find the right pick for your needs.

Learn exactly what voice observability is, why it matters for production voice AI agents, and how to trace failures across infrastructure, execution, and UX.

What voice AI works best for outbound sales calls in 2026? Compare the 7 platforms we tested, with everything you need to know on pricing and features.

Arize AI wasn't built for LLM agents, but the best Arize AI alternatives were. Here's an honest comparison of your options and who each one is built for.

Compare Retell vs. Vapi on pricing, features, latency, and compliance. I tested both platforms to help you pick the right voice AI for your team in 2026.

Most online Vapi review options stop at the feature list. This one goes further, diving into what breaks in production and what it actually costs per minute.

Arize AI pricing looks simple until you run RAG workloads or hit a compliance requirement. Here's a breakdown of the real costs and when to look elsewhere.

Choosing the best TTS for AI voice agents means considering latency, pricing, and quality under real calls. Here's what separates each provider in 2026.

Conversational analytics turns every voice call into structured data. Learn how it works, what metrics matter, and how voice AI teams use it in production.

It's easy to find an ElevenLabs alternative. What nobody tells you is which ones actually survive when real callers are on the line. Here are the top options.

LLM monitoring helps teams track quality, latency, cost, safety, and regressions in production. Here are the tools, metrics, and best practices that matter.

The best-rated AI virtual receptionist voice tools all promise 24/7 coverage. I tested nine options for 2026 to find out which ones actually deliver it.

Most voice agents fail in production. Here's how to write AI voice assistant response guidelines and voice agent prompts that hold up on real calls.

Your IVR passes pre-launch IVR testing and still breaks in production. Here's why, which methods prevent it, and the tools teams use in 2026.

LambdaTest works until your product actually scales. I tested the 7 best LambdaTest alternatives and competitors in 2026, so your team doesn't have to.

LambdaTest test infrastructure reviews tell the same story: Great for parallel execution, inconsistent on real devices. Here's the full breakdown.

LLM observability is the difference between knowing your AI works and assuming it does. Here's everything you need to know to set it up right.

This article covers AI voice message response best practices that developers use in production, with real examples, configuration fixes, and how to test before going live.

LambdaTest pricing has six separate tracks, and none of them talk to each other. Here's information on every module, every tier, and what a real team actually spends.

Most agent failures happen after launch. Here's how to build AI agent evals that catch broken tool calls, drift, and regressions before your users do.

Tired of missed calls? We tested 15+ AI answering services so you don't have to. Here are the 7 best options for 2026, ranked by real call performance.

Master chatbot testing for LLM-powered agents with this 2026 guide. Learn testing strategies, checklists, and tools to build reliable bots.

This ElevenLabs review for Conversational AI compiles what real users say about voice quality, pricing, and the gaps no one talks about. Here's what to know for 2026.

Looking for a Langfuse alternative? I tested 10 LLM observability tools for tracing, evals, and production monitoring. Here's what each one actually does well.

Here's everything you need to know about ElevenLabs pricing: every plan, how the credit system works, overage costs, and which tier makes sense for voice AI teams.

This is your full breakdown of every Langfuse pricing plan: Hobby, Core, Pro, and Enterprise. Learn more about real costs, overage math, and when it's worth it.

Most AI appointment booking tools sound great on a demo. I tested dozens and selected the 5 that hold up in real booking scenarios and in production.