How do Coval, Cekura, Bluejay, Roark and Hamming compare for voice agent regression testing?

As of October 13, 2026, all five simulate calls against your voice agent and score them, but they price and scale differently. Roark is the cheapest way to start ($50 free credit, simulations at $0.15 per minute plus telephony). Cekura charges $0.25 per test minute pay-as-you-go. Coval sells predictable bundles ($100 and $500 per month) with unlimited seats and a CLI for CI. Bluejay's Scale plan ($1,000 per month) runs up to 200 concurrent simulations for load tests. Hamming does not publish prices and sells through sales.

What is voice agent regression testing?

Regression testing reruns a fixed suite of simulated calls every time you change a prompt, a model, an STT or TTS vendor, or a tool, and compares the scores with the last good release. It catches the call flows that a change broke before customers find them. The suites are usually run from CI, with a pass threshold that blocks the deploy.

Which voice agent testing tool is cheapest?

For low volume, Roark: $50 of free credit, then $0.15 per simulated minute plus pass-through telephony and speech costs, and $0.04 per metric per minute. Cekura gives 300 free credits (about 60 minutes) and then $0.25 per minute. For around 1,000 to 2,000 test minutes a month, the $500 plans from Coval (1,000 minutes), Bluejay (1,500 minutes) and Cekura (about 2,000 minutes) come out close.

Which voice testing platform is best for HIPAA workloads?

Roark includes SOC 2 Type II and a HIPAA BAA on every plan, including pay-as-you-go. Coval lists HIPAA, SOC 2 Type II and GDPR from its $100 Starter plan. Cekura and Bluejay sign a BAA and DPA from their $500 plans. Hamming positions itself for banks and healthtech but negotiates terms through sales.

Quick Answer

Coval vs Cekura vs Bluejay vs Roark vs Hamming (2026)

Published: October 13, 2026

The short answer

All five vendors do the same core job — simulate callers against your voice agent, score the calls, and monitor production — so the choice comes down to pricing model, concurrency and how well each fits into CI. As of October 13, 2026:

Cheapest to start: Roark. $50 free credit, no card, $0.15 per simulated minute.
Predictable team budget: Coval. $100 or $500 per month, unlimited seats, API, CLI and MCP server.
Pay-per-minute with HIPAA paperwork: Cekura. $0.25 per test minute; BAA and DPA on the $500 Startup plan.
Load and concurrency: Bluejay. Up to 200 concurrent simulations on its $1,000 Scale plan.
Sales-led enterprise programs: Hamming. No public prices.

Our April page Roark vs Coval vs Hamming covered the first three vendors; this one adds Cekura and Bluejay and focuses on regression testing.

The comparison

Prices in USD, read from each vendor’s pricing page on October 13, 2026.

Vendor	Entry plan	Mid plan	Simulation price	Concurrency	Compliance
Roark	Pay as you go, $50 free credit	Team $500/mo (spent as usage)	$0.15/min PAYG, $0.10/min Team, from $0.05 Enterprise — plus telephony/STT/TTS at cost	10 / 25 / 100 lines; +10 lines $100/mo	SOC 2 Type II, HIPAA BAA on every plan
Coval	Starter $100/mo: 100 sim min, 1,000 monitored calls	Growth $500/mo: 1,000 sim min, 10,000 calls	Overage $0.40/min Starter, $0.25/min Growth	5 / 25 concurrent sims	HIPAA, SOC 2 Type II, GDPR on all plans
Cekura	Pay as you go, 300 free credits (≈60 min)	Startup $500/mo: ≈2,000 min, ≈10,000 calls	$0.25/min; monitored calls $0.05	10 / 50 concurrent calls	BAA & DPA from Startup
Bluejay	Pay as you go, $25 free credits	Growth $500/mo: 1,500 sim min, 13,000 monitoring min	Credits top-up on PAYG	25 / 100; Scale ($1,000) 200 + load testing	SOC 2 Type II; BAA & DPA from Growth
Hamming	Not published	Not published	Not published	Sales-defined	Enterprise terms via sales

What 1,000 test minutes a month costs

A typical regression program — 50 scenarios, run on every release, about 20 releases a month — burns roughly 1,000 simulated minutes.

Roark Team: 1,000 minutes × $0.10 = $100, plus metrics (5 metrics × $0.02 × 1,000 minutes = $100) and telephony at cost. Fits inside the $500 monthly usage.
Roark PAYG: $150 of simulation plus $200 of metrics at $0.04 — about $350 before telephony.
Cekura PAYG: 1,000 × $0.25 = $250. At 2,000 minutes, the $500 Startup plan is the same price with 50 concurrent calls and 10 seats.
Coval Growth: $500, with 1,000 minutes included and unlimited seats.
Bluejay Growth: $500, with 1,500 minutes and 13,000 production monitoring minutes included.

Seats matter more than they look. Cekura charges $30 per month for each seat beyond the first on pay-as-you-go; Coval and Bluejay include unlimited seats; Roark includes 5 on PAYG and 10 on Team.

Picks by situation

A first voice agent, one engineer: Roark PAYG. The free credit covers your first suite, and you pay nothing for live production calls you already run except metric evaluation. If you send your own transcripts, post-call transcription is free; otherwise it is $0.024 per minute.

Regression gate in CI for a whole team: Coval. Unlimited seats on every plan, a CLI and REST API for pipeline runs, and published overage rates so a busy release month does not surprise finance. Starter’s 5 concurrent simulations are the limit to watch: a 50-scenario suite runs in ten waves.

Regulated workload, pay per minute: Cekura. Usage pricing is simple ($0.25 per minute, $0.05 per monitored call), and the Startup plan adds a signed BAA, 90-day log retention and 24-hour Slack support. Enterprise adds VPC or on-prem deployment, SSO and SCIM.

Launch-day load tests: Bluejay. Concurrency is its headline: 25 parallel simulations on pay-as-you-go, 100 on Growth and 200 with load testing on Scale. Use it when you need to know how the agent behaves with a phone queue full of callers, not just one at a time.

Large program with procurement in the loop: Hamming. It publishes no tiers, so expect a sales process; shortlist it when you want the vendor to scope the test program with you.

How to run regression tests that catch real breaks

Freeze a scenario suite from real call transcripts: the top intents, the angry caller, the interruption, the wrong account number.
Score with a few hard metrics (task completed, correct tool called, policy followed) rather than dozens of soft ones — metrics are billed per call or per minute on most of these platforms.
Run the suite on every change to prompt, model, STT, TTS or tools, and block the deploy below your pass rate.
Feed production failures back into the suite each week; all five vendors monitor live calls for exactly this loop.

Last verified: October 13, 2026.

The short answer

The comparison

What 1,000 test minutes a month costs

Picks by situation

How to run regression tests that catch real breaks

Sources