Multilingual Voice AI Screening for High-Volume Hiring

Bolti, a voice AI platform for building production-ready conversational phone agents, helps you run automated phone screens at the top of your hiring funnel. Starting at just ₹7/min with a 50-minute free trial, Bolti allows you to screen hundreds of candidates simultaneously without tying up your recruitment team. For high-volume roles like delivery partners, retail staff, and customer support agents, conducting interviews in the candidate's preferred regional language dramatically improves response rates and qualification accuracy.

Why use multilingual voice AI screening for high-volume hiring?

Multilingual voice AI screening solves the bottleneck of qualifying thousands of candidates in their native regional languages. In India, high-volume recruitment for blue-collar, logistics, or field sales roles requires screening across multiple states. A candidate in Bengaluru might prefer Kannada, while a delivery partner in Chennai needs to be interviewed in Tamil.

Traditional manual screening fails at this scale because:

• Recruiter fatigue: Asking the same five basic qualification questions 200 times a day leads to human error and high recruiter churn.
• Language barriers: Finding bilingual recruiters for every regional dialect (Hindi, Marathi, Telugu, Tamil, Gujarati) is expensive and slow.
• High drop-off rates: Candidates who don't get a call within 24 hours of applying find other jobs, yet manual teams cannot call everyone instantly.

By deploying multilingual hiring agents, you can launch outbound calling campaigns that instantly reach thousands of candidates in their preferred languages, transcribing and summarizing their answers in real-time.

How Bolti's multilingual voice AI works

To make a voice agent sound natural and react instantly in regional Indian languages, Bolti coordinates four specialized technology layers on every single call.

Caller's audio   │   
                 ▼
[STT] Speech-to-Text (Transcribes regional speech to text, e.g., Fennec for Indian accents)
                 │   
                 ▼
[LLM] Large Language Model (Decides what to say next based on job description & resume context)
                 │   
                 ▼
[TTS] Text-to-Speech (Synthesizes natural, warm, and energetic local voices)
                 │   
                 ▼
[Telephony] (Carries the call over PSTN/SIP via your own or Bolti's phone numbers)

1. Speech-to-Text (STT) optimized for India

For Indian-language calls, global speech-to-text engines often struggle with local accents and mixed-language phrasing (like "Hinglish"). Bolti supports specialized providers like Fennec and Sarvam-backed STT that outperform global vendors in transcribing Indian languages and accents accurately.

2. Natural Text-to-Speech (TTS) voices

Inside the Bolti dashboard's Voice tab, you can choose how your screening agent sounds. You can filter a grid of voice cards by gender and language (such as Hindi, English, and more) and play a 3-second live preview. This allows you to select warm, professional, or energetic voices that match your company's brand.

3. High-performance LLM options

Bolti integrates with major closed-source models and high-performance open-source models via Baseten. Models like DeepSeek-V3.1 offer strong multilingual reasoning and cost-efficiency, making them ideal for processing complex, multi-language conversational tasks during a phone interview.

Step-by-step: Setting up an automated screening funnel

Setting up an automated screening campaign on Bolti takes under 10 minutes. The platform translates a job description and a list of candidate resumes into structured, automated phone calls.

1. Create the role: Navigate to Agents → HR Screening in the Bolti dashboard and click + New Role. Enter the title (e.g., "Delivery Partner - Mumbai") and paste the job description.
2. Add custom screening questions: Write down the key questions you want the agent to ask. For example: "Do you have a valid two-wheeler driving license?" or "Which shifts are you comfortable working?"
3. Choose your agent and map variables: Select your multilingual voice agent. Bolti's system automatically checks your agent's prompt for four critical variables: {{ candidate_name }}, {{ jd_text }}, {{ custom_questions }}, and {{ candidate_details }}. Once mapped, the agent is ready.
4. Upload candidates: Upload your list of candidates or resume PDFs. Bolti parses the details, summarizes them into bullet points, and prepares the profile.
5. Trigger the outreach: You can either schedule automated outbound calls for a specific time or send a scheduling link via WhatsApp or email, letting candidates self-book their screening call.

Compare Bolti's infrastructure for high-volume recruitment

When evaluating voice engines for high-volume campaigns, recruitment operations teams typically compare latency, language capabilities, and cost. Here is how Bolti stacks up:

• Sub-second latency: Bolti is built for production phone calls with sub-second turn-taking, real interruption handling, and telephony-grade noise cancellation. This prevents awkward silences during regional language conversations.
• BYOC (Bring Your Own Carrier): You can connect your existing SIP trunks (such as Exotel, Plivo, or Twilio) directly to Bolti, or purchase local Indian numbers directly through the platform.
• Developer-first API: Every action you take on the Bolti dashboard can be automated via our open REST API, allowing you to trigger screening calls directly from your ATS (Applicant Tracking System).
• Transparent pricing: With transparent pricing plans starting at a flat rate of ₹7/min pay-as-you-go, you only pay for the exact duration of the phone screens conducted.

Try Bolti for multilingual candidate screening

Accelerate your hiring funnel and stop losing qualified candidates to slow manual outreach. Spin up your first multilingual voice AI screening agent in under 10 minutes, customize your regional language settings, and start calling candidates today.

Create your free account on Bolti and get 50 free calling minutes to test your screening flows.

Frequently Asked Questions

Which Indian regional languages does Bolti support for screening?

Bolti supports major Indian languages including Hindi, Marathi, Tamil, Telugu, Kannada, Bengali, Gujarati, and English, alongside over 80 global languages.

Can candidates interrupt the AI voice agent mid-sentence?

Yes. Bolti features real-time interruption handling and sub-second latency, meaning the agent will stop speaking immediately when the candidate starts talking, just like a human recruiter.

How does Bolti handle noisy environments during phone screens?

Bolti utilizes telephony-grade noise cancellation and specialized speech-to-text (STT) models like Fennec to filter out background noise, ensuring accurate transcription even when candidates are outdoors or in transit.

Can I connect Bolti to my existing ATS or CRM?

Yes. Bolti features an open REST API, meaning every action on the dashboard can be triggered programmatically, allowing you to sync candidate data and call outcomes directly with your ATS.