Retell AI Review
API plus no-code, production telephony fast
Among the 13 voice ai tools we track, Retell AI has the 5th-highest included concurrency - a fit for high-traffic deployments.
From $0.07/min
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What we know about Retell AI
Retell AI is a voice ai platform: aPI plus no-code, production telephony fast. This profile tracks every Retell AI fact we have verified, each linked to a primary source and dated.
On pricing, Retell AI starts at $0.07 per minute for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes, and we model Retell AI closer to 0.085-0.415 USD/min all-in.
New Retell AI accounts get $10 free credits on signup to test with before a card is required, which is enough to run a handful of real calls and judge latency and voice quality for your own script rather than a demo.
On capabilities, Retell AI covers native sip trunking, bring-your-own llm, bring-your-own tts voice, native outbound campaigns, warm transfer to human, and built-in knowledge base, and does not offer llm/tts costs passed through at cost? and annual contract required for best pricing?. Each of those is verified against Retell AI's own docs or dashboard, not marketing copy.
On performance, Retell AI reports 20 calls concurrent calls on the base plan. Latency figures are vendor claims until we measure them ourselves, and they are labeled that way on the Retell AI fact sheet, so treat them as a starting point rather than a guarantee.
For compliance, with Retell AI: HIPAA is enterprise_only on the plans we checked and SOC 2 Type II is in place. If you are in a regulated space, confirm the current posture with Retell AI before you commit, since these change plan by plan.
Placed against the 13 voice ai tools we track, Retell AI's strongest showing is the 5th-highest included concurrency, while it trails at 14th on latency - a spread worth weighing against your own priorities.
Since we started tracking Retell AI, 1 verified fact change has landed in its record - the "What changed recently" section below has the specifics.
In total we track 28 verified facts for Retell AI today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Retell AI fact sheet below.
Reviewed by vsref Editorialfacts verified Jul 15, 2026Methodology →
Retell AI pricing
≈ $0.25 per minute all-in (est.), verified Jul 15, 2026 (source).
| Monthly volume | All-in monthly bill |
|---|---|
| 1K min/moSolo builder | $250 |
| 10K min/moAgency | $2,500 |
| 100K min/moCall center | $25,000 |
All-in monthly: platform fee + per-minute + telephony. Assumes GPT-4o class model, ElevenLabs voice. How we compute costs →
Fact sheet
Every row independently verifiedConsidering a switch? Best Retell AI alternatives →
TTS in this stack
Retell AI lets you bring your own text-to-speech voice, so the voice engine is a separate pricing and quality decision. Compare the engines builders plug in most: ElevenLabs, Cartesia, OpenAI TTS, or the full text-to-speech comparison →
STT in this stack
A voice agent hears through its speech-to-text engine, and transcription accuracy and streaming latency are priced per audio minute. Compare the engines builders pair with Retell AI: Deepgram, AssemblyAI, GPT-4o Transcribe, or the full speech-to-text comparison →
Avatar video in this stack
A voice agent's conversational interface can get a face too: AI avatar video platforms ship the same live, interactive avatar mode as a layer on top of a voice stack. Compare the avatar platforms builders pair with Retell AI: HeyGen, Synthesia, Hedra, or the full avatar-video comparison →