Bolna alternative
Crackle vs Bolna.
Bolna is an Indian voice agent platform for phone calls, from $0.06 a minute with its bundled models plus telephony and a platform fee, with Twilio, Plivo and Vobiz numbers, batch campaigns and bring-your-own-keys. Crackle is for agents in your website or app, at one rate with nothing added. Choose Bolna for Indian phone lines and campaigns; choose Crackle for web and app calls and an all-in price billed by the second.
Bolna’s facts are from its own pages, checked on 14 October 2026. Prices change; the sources are at the foot of the table.
Side by side.
| What | Crackle | Bolna |
|---|---|---|
| Price | $0.07 a minute | From $0.06 a minute (about ₹5.52), down to about $0.045 with larger top-ups |
| What the price covers | Voice, transcription and model, whichever you choose | Transcription, model and voice with its bundled models; telephony and a platform fee added per minute |
| To start | Free plan with sign-up credit; plans from $29 a month include call credit | $5 of free credit |
| Calls at once | 2 on the free plan; 5, 20, 75 on paid plans | Up to 25 on its Pilots plans |
| Billed by | The second; a call nobody joins costs nothing | 30-second pulses on its Pilots plans |
| Phone numbers | Not yet | Yes: Twilio, Plivo, Vobiz and SIP, with batch campaigns |
| Web and mobile apps | Web, iOS, Android and React Native, through LiveKit | Not stated on their pricing page |
| Talk button for a website | Yes: one line of HTML | Not stated on their pricing page |
| Languages | 44, with voices recorded in Hindi, Hinglish, Tamil, Telugu, Kannada, Marathi, Bengali, Gujarati and Punjabi | 10+ Indian languages, Hinglish, Hindi, Tamil and Telugu among them |
| Answers from documents | Yes: PDF, Word and text, up to 500 documents | Yes: PDFs and knowledge bases |
| Calls your APIs | Yes: your HTTP endpoints, during a call or before it | Yes, function calling |
| How an agent is built | A studio: write instructions, pick a voice, press Test agent; or the API | Agent Studio; bring your own model, voice and transcription keys |
Sources: Bolna pricing, read on 14 October 2026. Crackle’s figures are from its live price list.
When Bolna is the better choice.
- Your calls are on Indian phone lines, inbound or as outbound campaigns.
- You want to bring your own keys for the model, voice and transcription.
- You want sub-accounts for clients of your own.
When Crackle is the better choice.
- Your agent lives in your website or app: a one-line talk button, or LiveKit clients for web and mobile.
- You want one rate that includes everything, billed by the second.
- You serve callers beyond India too: 44 languages in all.
Moving from Bolna.
Most of an agent carries straight across. Their names for things, and Crackle’s.
- Agent
- Agent
- System prompt
- Instructions: paste it in and keep it as it is
- Custom functions or tools
- Tools: the same HTTP endpoints, described in plain words
- Knowledge base files
- Knowledge: upload the same PDFs, Word and text files
- Call events to your server
- Webhooks, signed, for each call’s start, lines and end
Other comparisons.
Try Crackle on your own agent.
Paste in the instructions you already have, pick a voice and talk to it. Sign-up credit is there for your first test calls.