7 researched alternatives
ElevenLabs Conversational AI alternatives
Voice agent platforms that solve the same job as ElevenLabs Conversational AI, ranked by closeness of substitute from Vapi to LiveKit.
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ElevenLabs Conversational AI is a voice-quality-first agent layer where the buyer provides the LLM and inherits a strong default voice library. The seven alternatives below solve the same job at different points on the tradeoff between voice ownership, latency, transparency of the bill, and openness.
Why these 7 made the shortlist
Some readers want a lower per-minute price. Others need self-hosting or an Apache-2.0 license. A few want one vendor running STT, LLM and TTS together rather than billing each layer separately. The ordering puts developer-platform parallels first and speech-infrastructure vendors' own agent layers at the bottom.
How we chose these alternatives
Every entry here is a Published voice-agent platform that can be deployed as the only system on the call. It accepts an inbound voice conversation, talks back, and either resolves the call or hands it off. Excluded platforms where voice is one channel among many, tools where the agent layer is not separately licensable, and enterprise voice-AI products sold only under multi-year custom contracts.
Ranked by closeness of substitute to ElevenLabs Conversational AI. Developer-platform parallels come first, then specialist voice vendors with their own model stacks, then the speech-infrastructure and LLM vendors' own agent layers. Prices are the entry tier as published on each vendor's own page, re-verified weekly.
How ElevenLabs Conversational AI and its alternatives compare
| Feature | Vapi | Retell AI | Bland AI | Cartesia | Deepgram Voice Agent API | LiveKit Agents | OpenAI Realtime API |
|---|---|---|---|---|---|---|---|
| Description | The developer platform for voice AI agents, bring your own model, voice and telephony, and Vapi orchestrates the call. | Build phone-call voice agents on Retell's turn-taking layer, plug in your own LLM, voice, and telephony, ship over voice, chat, or SMS. | Enterprise voice AI that owns its own model stack, priced all-in per minute with no model pass-throughs. | The Stanford SSM-research spinout behind Sonic (TTS) and Ink (STT) — Line, its open-source voice-agent SDK, connects to 100+ LLMs and starts at a genuine $0/month, but the agent layer itself isn't self-hostable. | The speech-infrastructure vendor's own voice-agent API. Managed STT, LLM and TTS over a single WebSocket, $4.50/hr flat, with 6 LLM providers and self-hosted or VPC deployment on the same product. | The Apache 2.0 voice-agent framework. 13.1k GitHub stars, self-hostable, and the only open-source pick in this category with fully published pricing. | OpenAI's own speech-to-speech model API for voice agents: WebRTC, WebSocket or native SIP telephony, billed purely on audio tokens with no platform fee. |
| Category | Voice agents | Voice agents | Voice agents | Voice agents | Voice agents | Voice agents | Voice agents |
| From | $0.05 / min | $0.07–$0.31 / min | $0.14/min / minute | $0 / month | $4.50/hr Standard / Standard to Custom (BYO LLM and TTS) | $0 / month | $32 / $64 audio / per 1M tokens |
| Tier | Listed | Listed | Listed | Listed | Listed | Listed | Listed |
| API | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Tags |
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7 alternatives to ElevenLabs Conversational AI, in detail
Vapi
from $0.05 / minThe developer platform for voice AI agents, bring your own model, voice and telephony, and Vapi orchestrates the call.
Best for Engineering teams that want maximum control to build custom voice agents on their own choice of model, voice and telephony.
Vapi is the developer platform overlap. BYO model and voice, $0.05/min orchestration fee on top of whatever model, voice and telephony the team picks. ElevenLabs positions itself around its own voice library and instant cloning. Vapi fits when voice identity matters less than the wire-level call plumbing.
Retell AI
from $0.07–$0.31 / minBuild phone-call voice agents on Retell's turn-taking layer, plug in your own LLM, voice, and telephony, ship over voice, chat, or SMS.
Best for Product and engineering teams that want a low-latency, human-sounding phone agent with flexible model and telephony choice.
Also a BYO-model developer platform, with a turn-taking layer as the main differentiator. Pricing starts at $0.07/min for AI voice agents, then accumulates a Retell voice-infrastructure fee, a TTS fee, a telephony fee and the LLM cost on top. Anyone choosing Retell over ElevenLabs is usually optimizing for response cadence, not voice cloning.
Bland AI
from $0.14/min / minuteEnterprise voice AI that owns its own model stack, priced all-in per minute with no model pass-throughs.
Best for Security-conscious enterprises in regulated industries that want a compliant, infrastructure-owned voice platform with deterministic call flows.
Bland prices all-in at $0.14/min with no model pass-throughs, which makes the bill easier to forecast than ElevenLabs' credit-pool-plus-overage structure. The trade is voice catalog. Bland runs its own model stack and a smaller voice library, so the move makes sense for teams that care more about predictable unit economics than about ElevenLabs' 10,000-voice range.
Cartesia
from $0 / monthThe Stanford SSM-research spinout behind Sonic (TTS) and Ink (STT) — Line, its open-source voice-agent SDK, connects to 100+ LLMs and starts at a genuine $0/month, but the agent layer itself isn't self-hostable.
Best for Engineering teams that want an open-source voice-agent SDK with real LLM choice, built on speech models several rival platforms in this category already license as a component.
Cartesia ships Line, an open-source voice-agent SDK, on top of its Sonic TTS and Ink STT. Agent minutes meter at $0.06/min regardless of tier, with a model-credit pool bought separately. The Stanford SSM pedigree and the open-source SDK make Cartesia the choice for latency-sensitive buyers who do not need ElevenLabs' voice cloning.
Deepgram Voice Agent API
from $4.50/hr Standard / Standard to Custom (BYO LLM and TTS)The speech-infrastructure vendor's own voice-agent API. Managed STT, LLM and TTS over a single WebSocket, $4.50/hr flat, with 6 LLM providers and self-hosted or VPC deployment on the same product.
Best for Engineering teams that want a managed speech pipeline with real LLM-provider choice, and regulated enterprises that need a self-hosted or VPC deployment option a typical closed-source voice-agent vendor does not offer.
Deepgram bundles STT, a configurable LLM and Aura-2 TTS over one WebSocket at a flat $4.50/hr. ElevenLabs' 10,000-voice catalog is replaced here by a much smaller Aura-2 library and the option to fully replace every layer with a bring-your-own component. The right alternative for buyers who want one vendor running the whole turn pipeline.
LiveKit Agents
from $0 / monthThe Apache 2.0 voice-agent framework. 13.1k GitHub stars, self-hostable, and the only open-source pick in this category with fully published pricing.
Best for Engineering teams that want to own their voice-agent stack end to end, self-hosted or on LiveKit Cloud, without being locked into one vendor's API.
The only Apache-2.0 entry on this list. The Build tier is $0/month with 1,000 agent-session minutes included, and the framework runs self-hosted with no platform fee. LiveKit is the alternative for engineering teams that refuse a managed platform, and it is also the place where voice is one of many real-time media types the same SDK handles.
OpenAI Realtime API
from $32 / $64 audio / per 1M tokensOpenAI's own speech-to-speech model API for voice agents: WebRTC, WebSocket or native SIP telephony, billed purely on audio tokens with no platform fee.
Best for Engineering teams building a voice agent from scratch who want to go directly to OpenAI's own speech-to-speech model (no orchestration platform, no per-minute markup) and are comfortable being single-vendor on OpenAI.
OpenAI's own speech-to-speech model, billed purely on audio tokens and usable over WebRTC, WebSocket or SIP telephony. The flagship gpt-realtime model sits at roughly $0.06 to $0.11/min depending on cache hit rate, with the smaller mini model at roughly a third of that. The right pick for teams that want OpenAI as the LLM and would rather not layer a separate agent platform on top.
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- What is the cheapest ElevenLabs Conversational AI alternative?
- Two entry points sit at the lower end of the published pricing. LiveKit's Build tier is $0/month with 1,000 agent-session minutes included. Cartesia's agent-meter is $0.06/min, lower than ElevenLabs' $0.08/min overage and well below the $0.16/min burst rate on the same base product.
- Is there a free alternative to ElevenLabs Conversational AI?
- LiveKit Agents runs at $0/month Build with 1,000 minutes on the platform and is fully self-hostable, so the cost ceiling is set by the team's own infrastructure rather than a vendor cap. ElevenLabs itself publishes a $0/month free tier with 15 call minutes, which is the floor for its own product.
- Which ElevenLabs alternative has the best voice cloning?
- On the entries here, ElevenLabs' 10,000-voice catalog and instant cloning is the broadest voice-cloning offering. Cartesia ships instant voice cloning on its $5/month Pro tier, which is the only alternative on this page with an equivalent capability. If voice cloning is the load-bearing requirement, ElevenLabs itself is the right answer.
- Which alternative is open source?
- LiveKit Agents is Apache-2.0 and self-hostable. Cartesia's Line voice-agent SDK is open source, but the agent layer itself is not self-hostable, so it sits between a fully open option and a fully managed platform.
- Which alternative is the closest developer-platform parallel to ElevenLabs?
- Vapi is the developer platform overlap. Both are BYO model and voice, both ship the call plumbing as a managed service, both publish per-minute pricing rather than enterprise quotes, and both let the team bring their own telephony. ElevenLabs' main differentiator is its own 10,000-voice library and cloning. Vapi passes voice choice off to third-party providers.
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