Proba.
Theme
AI-powered hiring platform · Series A

Evaluateevery candidate.Hire with data,not a gut feeling.

Proba runs structured AI assessments, voice interviews, and CEFR language tests — then grades and ranks every response automatically. Your team focuses only on the shortlist.

FREE PLAN INCLUDED · NO SETUP FEES · CANCEL ANYTIME

10×
Faster candidate screening
50k+
Candidates evaluated
9
Languages (CEFR)
100%
Automated grading
APPLICATIONS RECEIVEDSTRONG HIRES
Proba scored all 240 →
240
submitted · 3 days
15
strong hires · 11 minutes
Trusted by hiring teams at —
ArcadiaNorthstarRelayPivot HRFieldworkKindredBrightpathTempoQuorumLineworkVantaStellar LabsArcadiaNorthstarRelayPivot HRFieldworkKindredBrightpathTempoQuorumLineworkVantaStellar Labs
I am a

Stop reading resumes.

240 → 15Auto-shortlist in hours, not days
Single viewEvery candidate ranked, side-by-side
No screening callsAI voice interview replaces phone screens
The hiring problem

Drowning in applications, no time to screen them properly.

"Sent 200 assessment links. Got 40 back. Reviewed all 40 manually. Spent 3 days finding 3 candidates worth a call."

Recruiter · Scale-up

"Resume says B2 English. First call says otherwise. There's no way to verify language level without actually testing it."

Talent lead · BPO

"Two recruiters, same role — they shortlist completely different candidates. Hiring isn't consistent."

HR director · Agency

"We interview 12 candidates for every hire. That's 18 hours of our lead engineer's time — every month."

Hiring manager · SaaS

— Products

One platform.Three powerfulproducts.

Everything you need to evaluate candidates objectively and at scale.

01

Skills Assessments

Create assessments from a job description or document. Proba generates questions, conducts voice interviews, and grades every answer automatically.

  • AI question generation
  • Form & voice modes
  • Anti-fraud detection
  • Weighted scoring rubrics
02

Language Proficiency

Evaluate candidates against the CEFR framework across 9 languages. Classify their current level or run pass/fail tests against your target level.

  • A1–C2 CEFR evaluation
  • Fluency & grammar scoring
  • 9 languages supported
  • Pronunciation analysis
03

AI Voice Interviews

Deploy structured interviews in 10 types with 4 distinct AI personas. Get hiring recommendations backed by scored dimensions and transcript evidence.

  • 10 interview types
  • 4 AI personas
  • Hiring recommendation
  • Transcript evidence
— How it works

Job posting to shortlist in hours, not weeks.

01

Create in minutes

Paste a job description or upload a document. Proba generates a complete assessment, interview, or language test automatically.

~2 min
02

Candidates go at their pace

Send an invitation link. Candidates complete via voice or form, anytime, anywhere. Zero scheduling required.

24/7
03

AI grades. You decide.

Every response is graded automatically with scores, feedback, and hiring recommendations. You focus only on top candidates.

Instant
— AI infrastructure

AI does the heavy lifting.

Every evaluation is powered by state-of-the-art AI — structured, auditable, and consistent across every candidate.

Real-time voice interviews

Streaming audio with sub-100ms latency. Candidates get a natural conversation, not a robotic form.

Schema-validated grading

Every response is evaluated against a defined rubric. No free-form hallucinations — JSON schema output every time.

CEFR linguistic analysis

5-dimension evaluation: fluency, grammar, vocabulary, pronunciation, coherence — with justifications.

Semantic candidate search

Resumes vectorized with 768-dim embeddings. Find the right candidate from your pipeline with natural language.

evaluation.json
AI Generated
{
  "candidate": "Alex Johnson",
  "recommendation": "strong_hire",
  "overall_score": 87,
  "dimensions": {
    "technical_skills": {
      "score": 82,
      "feedback": "Demonstrates strong..."
    },
    "communication": {
      "score": 91,
      "feedback": "Clear and structured..."
    }
  },
  "cefr_evaluation": {
    "overall_level": "B2",
    "fluency": { "score": 88, "level": "B2" },
    "grammar": { "score": 85, "level": "B2" },
    "vocabulary": { "score": 90, "level": "C1" }
  }
}
— What teams say

Hiring teams love Proba.

−92%
Screening time

“We went from spending 3 full days reviewing assessments to reviewing a ranked shortlist in 2 hours. The AI grading is consistent, fair, and saves us from our own biases.”

MG

María G.

Head of Talent · Tech Scale-up

3×
Conversion to hire

“CEFR language testing changed everything for our BPO hiring. We used to discover language gaps in the first interview. Now we know before we even schedule a call.”

JT

James T.

HR Director · BPO Company

4×
Candidates/mo

“We now screen 4× more candidates than before — same team, same budget. The quality of shortlists is actually better because the AI catches things we'd miss after 50 resumes.”

LM

Laura M.

Recruiting Lead · SaaS Company

— Interview types

10 types. Every hiring scenario.

From first screening to exit interview — Proba has a structured AI format for every conversation.

01

Screening

Initial fit & background

02

Behavioral

STAR-method assessment

03

Cultural Fit

Values & collaboration

04

Salary Expectation

Compensation alignment

05

Leadership

Vision & team development

06

Sales Aptitude

Discovery, objections, closing

07

Customer Service

Empathy & problem-solving

08

Reference Check

Third-party testimony

09

Exit Interview

Departure reason & feedback

10

Onboarding Check-in

Early integration & support

— Trust & integrity

Built for assessments that matter.

When evaluation integrity is non-negotiable, Proba has enterprise-grade safeguards.

Tab switch detection

Every attempt to leave the assessment is logged and counted automatically.

Copy-paste monitoring

Clipboard activity is tracked and flagged in the anti-fraud report.

Risk score

Aggregate risk score per response, surfaced clearly in the results view.

Recording & consent

Optional audio recording with explicit candidate consent built in.

Audit trail

Immutable platform audit log with 2-year retention for compliance.

Restricted access

Limit who can view sensitive interview responses by role.

— Pricing

Start free. Scale as you grow.

No contracts. No setup fees. Cancel anytime.

Free

$0/ mo

Perfect for trying Proba.

3 assessments / month
Voice interviews
Language tests
All response modes
All 10 interview types

Starter

$85/ mo

For growing recruiting teams.

Everything in Free
50 assessments / month
API access
Webhooks
MOST POPULAR

Growth

$149/ mo

For high-volume hiring.

Everything in Starter
200 assessments / month
Priority support
SSO / SAML
Custom branding

Enterprise

For large organizations.

Everything in Growth, and:

Unlimited assessments
Unlimited invitations
Dedicated CSM
SLA guarantee
Audit logs
Advanced analytics
Multi-workspace

Full plan comparison

FreeStarterGrowthEnterprise
Assessments
Assessments / month350200Unlimited
Invitations / month10100500Unlimited
Form mode
Voice mode—
Language tests—
All interview modes——
All 10 interview types——
AI
AI grading
AI feedback—
Analytics
Basic analytics
Advanced analytics———
Integrations
API access—
Webhooks——
Customization
Custom branding——
Multi-workspace———
Support
Email support
Priority support——
Dedicated CSM———
SLA guarantee———
Security & Compliance
SSO / SAML———
Audit logs———
webhook_payload.json
POST https://yourapp.com/webhooks
Content-Type: application/json
X-Proba-Signature: sha256=abc123...
{
  "event": "assessment.completed",
  "data": {
    "candidate": "alex@example.com",
    "score": 87,
    "recommendation": "strong_hire"
  }
}
— Developer-first

Integrate Proba into your workflow.

OpenAPI 3.1 spec, REST API, and HMAC-signed webhooks. Built to plug into your ATS, HRIS, or any internal system.

01

OpenAPI 3.1 Spec

Full documentation with type-safe SDKs and ready-to-import Postman collections.

02

Signed Webhooks

Real-time events with HMAC-SHA256 signing, exponential backoff, and dead-letter queue.

03

Scoped API Keys

Fine-grained permissions per key. Create, rotate, or revoke at any time.

04

Usage Analytics

Request logs, latency metrics, and error rates — per endpoint, per key.

Ready to hire with confidence?

Start evaluating candidates the right way — AI-powered, consistent, and at scale.

30-day free trial
No credit card required
Cancel anytime