Alternatives to Vapi

9 alternatives to Vapi that we cover: Retell AI, Cartesia, Deepgram, AssemblyAI, Murf AI, Resemble AI, Speechify, Piper, faster-whisper. The table shows the evidence behind each entry and whether its pricing has been verified.

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Vapi
Retell AICartesiaDeepgramAssemblyAIMurf AIResemble AISpeechifyPiper
Vapi alternatives: Retell AI, Cartesia, Deepgram, AssemblyAI, Murf AI, Resemble AI, Speechify, Piper, faster-whisper

Vapi in brief

Developer platform for voice agents; $5 free credits, then pay for the minutes you run.

Vapi's pricing page offers $5 in free credits, pay-per-minute use (pre-paid with $0.05 a minute Vapi hosting), and lists plan amounts of $29 and $999 a month plus enterprise.

What it does well: Pay for minutes used; Developer focus.

Where it falls short: Total cost depends on chosen providers.

Latest version we cover: none recorded (Oct 25, 2026). Vendor: Vapi.

When to look beyond Vapi

Skip Vapi if:

Read the full Vapi write-up →

When Vapi is still the right pick

Stay with Vapi if:

Vapi: Partly verified. Read from vapi.ai/pricing on 2026-10-25. Provider costs (speech, model, telephony) add to the per-minute rate. Evidence: Reported (not run by us).

Before you switch, note what we could not verify about Vapi:

See also all alternatives pages and side-by-side comparisons.

Vapi and its alternatives at a glance

Vapi and alternatives: evidence, pricing status, latest version and last verified date
ToolEvidencePricingLatest version we coverLast verified
VapiReported (not run by us)Partly verifiedn/a
Retell AIReported (not run by us)Official page, datedn/a
CartesiaReported (not run by us)Official page, datedn/a
DeepgramReported (not run by us)Official page, datedn/a
AssemblyAIReported (not run by us)Partly verifiedn/a
Murf AIReported (not run by us)Official page, datedn/a
Resemble AIReported (not run by us)Official page, datedn/a
SpeechifyReported (not run by us)Official page, datedn/a
PiperTested (smoke test, 2026-10-25, no LLM involved)Partly verifiedv1.8.0
faster-whisperTested (smoke test, 2026-10-25, no language model involved)Partly verifiedv1.2.1

Evidence labels: Reported means written from official sources; Tested means a small smoke test with its scope stated. See methodology. Pricing status shows how well we could verify prices; open each tool page for the note.

9 alternatives

Retell AIReported

Retell AI

Verdict: Voice AI agents for phone calls with pay-per-minute pricing and 20 free concurrent calls.

Pick Retell AI if: Teams automating inbound and outbound phone calls.

  • For AI voice and speech: neither Retell AI nor Vapi has an editorial rank in this category.
  • Pricing model: Retell AI is Pay as you go; Vapi is Pay as you go.
  • Free tier: Retell AI: 20 free concurrent calls; sign up free. Vapi: $5 free credits.
  • Runs on: Retell AI: API and dashboard. Vapi: API and dashboard.
  • License: Retell AI: Proprietary. Vapi: Proprietary.

Vapi vs Retell AI →

CartesiaReported

Cartesia

Verdict: Realtime voice AI: text-to-speech, speech-to-text in 44 languages and voice agents, with a free plan and credit tiers.

Pick Cartesia if: Developers building low-latency voice agents.

  • For AI voice and speech: neither Cartesia nor Vapi has an editorial rank in this category.
  • Pricing model: Cartesia is Freemium; Vapi is Pay as you go.
  • Free tier: Cartesia: Free: $0 a month, 20K credits and $1 prepaid agents. Vapi: $5 free credits.
  • Runs on: Cartesia: API. Vapi: API and dashboard.
  • License: Cartesia: Proprietary. Vapi: Proprietary.
DeepgramReported

Deepgram

Verdict: Voice AI APIs for speech-to-text, text-to-speech and agents with $200 in free credit.

Pick Deepgram if: Developers adding transcription or voice agents.

  • For AI voice and speech: neither Deepgram nor Vapi has an editorial rank in this category.
  • Pricing model: Deepgram is Pay as you go; Vapi is Pay as you go.
  • Free tier: Deepgram: $200 free credit, no card. Vapi: $5 free credits.
  • Runs on: Deepgram: API. Vapi: API and dashboard.
  • License: Deepgram: Proprietary. Vapi: Proprietary.
AssemblyAIReported

AssemblyAI

Verdict: Speech AI APIs for transcription and understanding; start free, pay as you go.

Pick AssemblyAI if: Developers adding transcription and speech understanding.

  • For AI voice and speech: neither AssemblyAI nor Vapi has an editorial rank in this category.
  • Pricing model: AssemblyAI is Pay as you go; Vapi is Pay as you go.
  • Free tier: AssemblyAI: Free to start. Vapi: $5 free credits.
  • Runs on: AssemblyAI: API. Vapi: API and dashboard.
  • License: AssemblyAI: Proprietary. Vapi: Proprietary.
Murf AIReported

Murf AI

Verdict: Text-to-speech platform with a $10 free API trial, pay-as-you-go credits and per-character API pricing.

Pick Murf AI if: Developers who want low per-character TTS pricing; Teams building voice agents that need fast first audio.

  • For AI voice and speech: neither Murf AI nor Vapi has an editorial rank in this category.
  • Pricing model: Murf AI is Free API trial, pay as you go and enterprise; Vapi is Pay as you go.
  • Free tier: Murf AI: $10 of free API credit. Vapi: $5 free credits.
  • Runs on: Murf AI: API and web studio. Vapi: API and dashboard.
  • License: Murf AI: Proprietary. Vapi: Proprietary.
Resemble AIReported

Resemble AI

Verdict: Resemble AI now leads with real-time deepfake detection and watermarking for audio, video and images; plans from free to $1,000 a month.

Pick Resemble AI if: Enterprises verifying media authenticity.

  • For AI voice and speech: neither Resemble AI nor Vapi has an editorial rank in this category.
  • Pricing model: Resemble AI is Freemium; Vapi is Pay as you go.
  • Free tier: Resemble AI: Free: $0, buy credits as you go. Vapi: $5 free credits.
  • Runs on: Resemble AI: Cloud and on-prem (per site). Vapi: API and dashboard.
  • License: Resemble AI: Proprietary. Vapi: Proprietary.
SpeechifyReported

Speechify

Verdict: Text-to-speech app that reads PDFs, books and web pages aloud, with a Free plan and a $29 monthly premium price.

Pick Speechify if: People who want documents read aloud.

  • For AI voice and speech: neither Speechify nor Vapi has an editorial rank in this category.
  • Pricing model: Speechify is Freemium; Vapi is Pay as you go.
  • Free tier: Speechify: Free plan. Vapi: $5 free credits.
  • Runs on: Speechify: Web and apps. Vapi: API and dashboard.
  • License: Speechify: Proprietary. Vapi: Proprietary.
Open Home FoundationTested (smoke test)

Piper

Verdict: Fast, private speech synthesis on a CPU; mind the GPL-3.0 license if you embed it.

Pick Piper if: Local voice output without a GPU; Home and offline projects.

  • For AI voice and speech: neither Piper nor Vapi has an editorial rank in this category.
  • Pricing model: Piper is Open source; Vapi is Pay as you go.
  • Free tier: Piper: Open source, free to use. Vapi: $5 free credits.
  • Runs on: Piper: Python; Linux, macOS, Windows. Vapi: API and dashboard.
  • License: Piper: GPL-3.0 (per GitHub). Vapi: Proprietary.
SYSTRANTested (smoke test)

faster-whisper

Verdict: Fast local transcription; on CPU use float32 and check int8 against a reference before trusting it.

Pick faster-whisper if: Local, private transcription; Developers building voice pipelines on CPU.

  • For AI voice and speech: neither faster-whisper nor Vapi has an editorial rank in this category.
  • Pricing model: faster-whisper is Open source; Vapi is Pay as you go.
  • Free tier: faster-whisper: Open source, free to use. Vapi: $5 free credits.
  • Runs on: faster-whisper: Python; CPU and NVIDIA GPU. Vapi: API and dashboard.
  • License: faster-whisper: MIT (per GitHub). Vapi: Proprietary.

FAQ

What are the best alternatives to Vapi?

Retell AI, Cartesia, Deepgram, AssemblyAI, Murf AI, Resemble AI, Speechify, Piper, faster-whisper. Each is covered with a verdict on this site.

When should I use something other than Vapi?

Skip Vapi if: You want a flat per-seat price.