Voice agents that answer the phone.
Realtime voice agents on one all-in API, with no stitched stack and no spreadsheet bill.
- One line item
- The LLM, speech, and telephony are in the rate, never billed on top
- Scoped with you
- An engineer sizes the deployment before anything is signed
curl -X POST https://api.speechify.ai/v1/agents \
-H "Authorization: Bearer $SPEECHIFY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"name": "Front desk",
"prompt": "You book and reschedule appointments.",
"voice_id": "beatrice_32"
}'Six things that ship in the platform.
Not add-ons, and not a stack you assemble. Every agent gets the same set behind one configuration.
Tools & function calling
Let agents call your APIs mid-conversation to look things up, take actions, and complete tasks in real time.
ExploreKnowledge base
Ground every answer in your own content with built-in retrieval. Upload documents, files, and sitemaps.
ExploreMemory
Agents remember context within a conversation — and across calls — for interactions that feel continuous.
ExplorePhone numbers & telephony
Inbound and outbound calling over SIP. Provision numbers and connect agents straight to the phone network.
ExploreWebhooks & events
Stream conversation events to your backend as they happen, with signed, verifiable payloads.
ExploreTesting & simulation
Validate behavior before you ship with reply, tool, and full-conversation simulation tests.
ExploreSounds more natural and responds faster.
The voice behind every agent is Simba 3.2. It produces first audio in <100ms, so replies land fast enough that the conversation feels natural rather than transactional.
On end-to-end latency, the result depends on how the stack is deployed. Baseten's case study of our co-located ASR, LLM, and TTS pipeline measured lower latency per turn than a stitched multi-vendor setup.
One line item, quoted per contract.
Most platforms quote a platform fee, then bill the LLM, the speech models, and the telephony on top. Ours is one number, agreed with you against the volume and the concurrency you actually need.
The API is the same; the workflows differ.
Prebuilt patterns and real sample calls for the verticals where the compliance posture matters as much as the transcript.
Insurance
From claims intake and policy quotes to renewal reminders and Medicare enrollment, SpeechifyAI voice agents automate policyholder and prospect workflows while maintaining compliance.
Learn more3 workflowsReal Estate
From lead qualification and showing scheduling to tenant support and maintenance requests, SpeechifyAI voice agents automate every phone-driven workflow across brokerages, property management, and mortgage.
Learn more3 workflowsFinancial Services
From account inquiries and loan origination to claims processing, collections, and compliance verification, SpeechifyAI voice agents automate customer and advisor workflows without sacrificing financial trust.
Learn morePriced against the alternatives.
The landscape is fragmented: platform fees, LLM passthrough, per-minute telephony, and compliance sold as extras. These put the whole bill side by side.
vs ElevenLabs
ElevenLabs Conversational AI is a voice-first agent layer built on the company's well-known TTS. SpeechifyAI is all-in: the LLM, speech-to-text, and text-to-speech sit in one rate with no passthrough and no token math, plus deterministic workflows, tool calling, evals, and enterprise governance. It is an enterprise product, quoted per contract.
Comparevs Vapi
Vapi is a flexible, API-driven way to build voice agents, but its $0.05/min is an orchestration fee; you add STT, LLM, TTS, and telephony on top (~$0.10-0.20/min all-in). SpeechifyAI is one all-in rate with the LLM included, plus a workflow editor, tool calling, evals, and governance, quoted per contract.
Comparevs Retell
Retell gives developers low-latency voice infrastructure with itemized pricing: voice infra at $0.055/min plus TTS, LLM, and telephony add up to ~$0.11/min typical. SpeechifyAI rolls it into one all-in rate with the LLM included, plus deterministic workflows, tool calling + webhooks, and governance, quoted per contract.
CompareFrequently asked questions
What is SpeechifyAI Agents?
What can a voice agent do?
How much does it cost?
How do I start?
Talk to us about a deployment
Realtime voice agents on one all-in API, with no stitched stack and no spreadsheet bill.