Top 9 of 17 alternatives

Telnyx Voice AI Agents alternatives: 8 of 9 beat it on GPT

The closest alternatives to Telnyx Voice AI Agents in October 2026 are ElevenLabs Agents, Retell AI and Bland.

Updated 28 October 2026

9 agents compared · 4 with a free plan · prices checked 2 September–28 October 2026

Reviewed by The Agents Index editorial team.

Featured agents appear first in this shortlist and on their category page.Get featured

Telnyx Voice AI Agents and its alternatives at a glance

Agent	Best for	Starts at	Better than Telnyx Voice AI Agents at	Checked
Telnyx Voice AI Agents		From $0.05 per minute source		9 September 2026
ElevenLabs Agents	Developers and product teams who want ElevenLabs' voice quality and cloning as the foundation of their agent, and are comfortable assembling the rest of the stack themselves.	Free, then $6 a month source	Done-for-you service, Agent permissions	18 October 2026
Retell AI	Product and engineering teams that want a low-latency, human-sounding phone agent with flexible model and telephony choice.	From $0.07 per minute source	Done-for-you service, GPT	23 September 2026
Bland	Security-conscious enterprises in regulated industries that want a compliant, infrastructure-owned voice platform with deterministic call flows.	Free, then $0.14 per minute source	Done-for-you service, In your editor	18 October 2026
LiveKit Agents	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.	Free, then $50 a month source	GPT, Self-hosted	2 September 2026
Vapi	Engineering teams that want maximum control to build custom voice agents on their own choice of model, voice and telephony.	From $0.05 per minute source	Done-for-you service, GPT	3 September 2026
OpenAI Realtime API	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.	From $10 per 1m input tokens source	GPT, Open source	25 October 2026
Cartesia	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.	Free, then $5 a month source	GPT, Self-hosted	2 September 2026
Deepgram Voice Agent API	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.	From $0.05 per minute source	GPT, Self-hosted	2 September 2026
PolyAI	Teams that want a proven, enterprise-scale, compliance-certified voice AI vendor with a research-led model roadmap, and are prepared to start with a sales conversation: there is no self-serve or free way to trial it today.	From $0.02 per minute source	Done-for-you service, GPT	2 September 2026

Closest alternatives to Telnyx Voice AI Agents

The ones people open most here come first, then the closest matches. How we check

1
ElevenLabs Agents
From Free
Hosted platform for building voice and chat agents, with telephony, SDKs and a choice of LLM.
Why it's on this list
Done-for-you service: PartlySelf-serve software you run, but enterprises can buy ElevenLabs Forward Deployed Engineers who scope, build and stabilise the deployment; no price is published.
Source ↗
Better than Telnyx Voice AI Agents at
- Agent permissions: Yes ↗
- GPT: Yes ↗
Trade-offs
- In your editor: No ↗
- Audit log: Partly ↗
Watch for
Covers the voice + LLM-orchestration layer, not a turnkey ops product, CRM/helpdesk workflows, observability and compliance UI are yours to build.
2
Retell AI
From $0.07 per minute
Pay-as-you-go platform for building, testing and running AI phone, chat and SMS agents.
Why it's on this list
Done-for-you service: PartlyYou run the software yourself in Retell's no-code studio; hands-on implementation by Retell's people is sold only as an Enterprise add-on, not as a managed service.
Source ↗
Better than Telnyx Voice AI Agents at
- GPT: Yes ↗
- Getting out: Yes ↗
Trade-offs
- Open models: Partly ↗
- On the command line: No ↗
Watch for
True per-minute cost is the sum of stacked components, so budgeting requires modelling model, voice, and telephony together.
3
Bland
From Free
Enterprise voice AI platform for inbound and outbound phone agents, running on Bland's own self-hosted models.
Why it's on this list
Done-for-you service: PartlyYou run the software yourself on the self-serve plans, but Enterprise buyers get Bland engineers building the first deployment.
Source ↗
Better than Telnyx Voice AI Agents at
- In your editor: Yes ↗
- Self-hosted: Partly ↗
Trade-offs
- Multi-agent: Partly ↗
- Claude: No ↗
Watch for
Voice cloning across the full 40+ language set and the lowest per-minute rates are effectively Enterprise-tier features.

The rest of the shortlist

LiveKit Agents
Open-source Python and Node.js framework for voice AI agents, with LiveKit Cloud hosting, telephony and observability.
Watch for: A framework, not a no-code or dashboard-first builder. Expect to write and deploy real code, unlike this category's more configured rivals.
From Free
Vapi
Developer platform for building, testing and deploying voice AI agents that make and receive phone calls.
Watch for: True per-minute cost is the sum of several passed-through services, so the headline platform fee understates spend.
From $0.05 per minute
OpenAI Realtime API
Speech-to-speech voice agent API with tools, interruptions and WebRTC, WebSocket or SIP transports.
Watch for: 60-minute maximum session duration.
From $10 per 1m input tokens
Cartesia
Real-time speech models and a managed runtime for production phone and web voice agents.
Watch for: Line's voice-agent runtime cannot be self-hosted — only the underlying Sonic/Ink models can, on an Enterprise contract.
From Free
Deepgram Voice Agent API
One WebSocket API that runs speech-to-text, LLM orchestration and text-to-speech for real-time voice agents.
Watch for: No dedicated free tier. A one-time $200 credit only, then usage billing from the first paid session.
From $0.05 per minute
PolyAI
Enterprise platform for building voice and chat agents that resolve customer calls, priced per minute.
Watch for: No self-serve or free path exists today. Both build tools (Poly Agent Studio and the ADK) are reachable only after a sales conversation, following a self-serve tier that ran free for two months from May 2026 and was gone from PolyAI's own site by an August 2026 re-check.
From $0.02 per minute