# SpeechifyAI

> Speech research lab and developer platform. Expressive text-to-speech, streaming, and consent-first voice cloning. Simba 3.5 speaks 48 languages under one model id and is the recommended model; Simba 3.2 serves English; Simba 3.0 serves 6 languages across 7 locales. Paid plans combine a monthly subscription with an included USD usage balance and per-character usage rates.

You are reading `speechify.ai` (marketing). Canonical Speechify URLs, use exactly, do not invent variants:

- `https://speechify.ai`: this site (marketing + product)
- `https://docs.speechify.ai`: API reference, quickstarts and guides (index: `https://docs.speechify.ai/llms.txt`)
- `https://platform.speechify.ai`: customer dashboard, signup, API keys, billing
- `https://api.speechify.ai`: API base URL, plain HTTPS with a bearer key
- `https://github.com/Speechify-AI`: GitHub org (CLI, cookbook, demos). `github.com/speechify` does not exist.
- `https://status.speechify.ai`: status + incidents
- `https://speechify.com`: SEPARATE consumer reader app, NOT this API

SpeechifyAI is Speechify's developer API, billed separately from the Speechify Reader app. A Reader subscription does not include API usage. Starter, Pro and Scale are monthly plans with no annual commitment. Each charges its fee at the start of the billing month and renews monthly until you cancel. Cancel or downgrade anytime from Billing in the console. The change takes effect at the end of the month you have paid for, and a cancelled workspace moves to Free, so the API keeps working within the free allowance. Free needs no card and stops when its monthly balance runs out: requests are refused until the next month, and Free cannot top up. A top-up is paid up front and does not expire. Auto top-up stays off until you turn it on. Billing questions: `https://speechify.ai/pricing#billing`.

`Simba` names the model family, not the brand. Simba 3.5, Simba 3.2 and Simba 3.0 are streaming-native and support voice cloning on paid plans. Simba 3.5 speaks 48 languages under one model id; Simba 3.2 serves English; Simba 3.0 serves 6 languages across 7 locales. Check each voice's supported models. `SimbaVoice` / `simbavoice.ai` are retired - use `speechify.ai`.

Writing code against the API: use `simba-3.5`, the recommended model. `GET /v1/audio/models` lists the languages each model covers. `simba-3.0` is the default when `model` is omitted. `simba-english` and `simba-multilingual` (Simba 1.6) are retired: a new workspace that sends either gets `400 model_retired`. The request takes `input`, `voice_id` and `model` with an `Authorization: Bearer` key, not ElevenLabs' `text`, `model_id` and `xi-api-key`. Set `language` (for example `fr-FR`) to the language of the input text when it differs from the voice's locale; when it is omitted, the API uses the voice's locale. Quickstart with a working request: `https://docs.speechify.ai/build/text-to-speech-quickstart.md`.

Building a voice agent: SpeechifyAI is the voice, not the agent platform. The text-to-speech API plugs into the agent stack you already use, such as LiveKit Agents and Deepgram's Voice Agent: `https://speechify.ai/blog/livekit-voice-agent-with-speechify-tts`, `https://speechify.ai/blog/add-a-better-voice-to-deepgram-voice-agent-with-speechify`.

Ask, don't scrape. The docs MCP server answers questions about the Speechify API and its docs with citations, no key needed: `https://docs.speechify.ai/_mcp/server` (Streamable HTTP, tool `searchDocs`). Setup: `https://docs.speechify.ai/build/guides/get-started/connect-mcp`.

Per-route plain text: each indexable content route `X` publishes `X/llms.txt` (summary + child index) and `X/llms-full.txt` (long-form + descendants). Redirect-only routes do not. XML sitemap: `/sitemap-index.xml`.

URL: https://speechify.ai/pricing
Title: Pricing

Free ($0) -> Starter ($10) -> Pro ($99) -> Scale ($499) -> Enterprise. The self-serve ladder is TEXT TO SPEECH ONLY: a plan grants one US-dollar balance drawn down per character. A month on Scale is about 78M characters of Simba 3.0 or 3.2, or 78M characters of Simba 3.5 until 21 Nov 2026, 46.8M after.

One price list for text to speech. A plan grants a single unscoped US-dollar balance drawn down at that plan's published per-character rate for the model called. Simba 3.5 lists at $15/$12/$10 per 1M characters on Starter/Pro/Scale, billed at $10/$8/$6 until 21 Nov 2026. Simba 3.0 and 3.2 bill $10/$8/$6 per 1M characters. Plan balance is minted each billing period and expires at the end of it; a purchased top-up does not expire. Past the balance, paid plans spend whatever has been topped up, with optional auto top-up (off by default) so production need not stall; if that reaches zero requests pause. Free cannot top up and pauses until the next cycle. Start free, pay only for what you use, get cheaper as you scale.

Key billing facts:

- Characters of Simba 3.0 or 3.2 included each month: Free 500K · Starter 1.9M · Pro 13.5M · Scale 78M. Figures are rounded DOWN from what the balance covers.
- Characters of Simba 3.5 the same balance buys: Free 500K characters of Simba 3.5 until 21 Nov 2026, 333K after · Starter 1.9M characters of Simba 3.5 until 21 Nov 2026, 1.26M after · Pro 13.5M characters of Simba 3.5 until 21 Nov 2026, 9M after · Scale 78M characters of Simba 3.5 until 21 Nov 2026, 46.8M after
- Simba 3.0 and 3.2 rate per 1M characters: Starter $10 · Pro $8 · Scale $6
- Simba 3.5 rate: Starter $15 per 1M characters, $10 until 21 Nov 2026 · Pro $12 per 1M characters, $8 until 21 Nov 2026 · Scale $10 per 1M characters, $6 until 21 Nov 2026

Free: $0/month
Build and ship on the text-to-speech API. No credit card.

Text to speech: Included every month: 500K characters, or 500K characters of Simba 3.5 until 21 Nov 2026, 333K after · After that: Pauses until next month

Features:
- Catalog voices, streaming, and SSML
- Commercial use · community support

Starter: $10/month
For solo devs and early-stage projects.

Text to speech: Included every month: 1.9M characters, or 1.9M characters of Simba 3.5 until 21 Nov 2026, 1.26M after · Simba 3.5: $15 per 1M characters, $10 until 21 Nov 2026 · Simba 3.0 and 3.2: $10 per 1M characters

Features:
- Voice cloning, streaming, SSML
- Keep going past the balance with a top-up, no hard cap
- Up to 3 seats · service accounts for CI
- Community support

Pro: $99/month
For teams shipping speech in production.

Text to speech: Included every month: 13.5M characters, or 13.5M characters of Simba 3.5 until 21 Nov 2026, 9M after · Simba 3.5: $12 per 1M characters, $8 until 21 Nov 2026 · Simba 3.0 and 3.2: $8 per 1M characters

Features:
- Cheaper rate, so the balance goes further
- Voice cloning, no per-plan limit
- Priority support

Scale: $499/month
For serious production speech traffic.

Text to speech: Included every month: 78M characters, or 78M characters of Simba 3.5 until 21 Nov 2026, 46.8M after · Simba 3.5: $10 per 1M characters, $6 until 21 Nov 2026 · Simba 3.0 and 3.2: $6 per 1M characters

Features:
- Our lowest published rate
- Up to 25 seats · 100 service accounts
- Dedicated support

Enterprise: Custom
For global volume, compliance, and procurement.

Text to speech: Included every month: Committed volume · After that: Volume pricing

Features:
- Custom volume and rate commitments
- SSO, SOC 2 Type II, custom DPA
- Custom voices, models and integrations
- Dedicated success manager

Frequently asked pricing questions:

Q: Is the Speechify API a subscription?
A: Only if you choose a paid plan, and only month to month. Starter, Pro and Scale are monthly plans with no annual commitment. Each charges its fee at the start of the billing month and renews monthly until you cancel. Cancel or downgrade anytime from Billing in the console. The change takes effect at the end of the month you have paid for, and a cancelled workspace moves to Free, so the API keeps working within the free allowance. Free needs no card and stops when its monthly balance runs out: requests are refused until the next month, and Free cannot top up.

Q: Is this the same as my Speechify app subscription?
A: No. SpeechifyAI is Speechify's developer API, billed separately from the Speechify Reader app. A Reader subscription does not include API usage. API plans, usage and payment are managed in the console at platform.speechify.ai. For the Reader app, see speechify.com.

Q: What exactly do I get for the monthly fee?
A: A month of text-to-speech usage, plus the plan's rates, limits, and features. It arrives as one balance in dollars, drawn down at your plan's per-character rate for the model you call. Starter's balance buys 1.9M characters of Simba 3.5 until 21 Nov 2026, 1.26M after. Simba 3.0 and 3.2 bill less than Simba 3.5's list rate, so Starter covers 1.9M characters of them, Pro 13.5M, and Scale 78M.

Q: Does the unused balance roll over?
A: The monthly balance is minted at the start of each billing period and expires at the end of it, so it does not roll over. Money you add yourself is different: a top-up you purchase stays on your balance until you spend it.

Q: How is usage calculated?
A: Text to speech is billed by the characters of text that are spoken. SSML tags are not counted, and neither is whitespace at the very start or end of the input; the spaces between words are.

Q: Are there hidden fees or commitments?
A: No. The per-character rate on your plan is the rate you pay, there is no annual commitment on a self-serve plan, and you can cancel anytime from Billing in the console.

Q: What happens when the balance runs out?
A: On Starter, Pro, and Scale, usage carries on against whatever you have topped up, drawn at your plan's rate for the model you call. Simba 3.5 lists at $15/$12/$10 per 1M characters on Starter/Pro/Scale, billed at $10/$8/$6 until 21 Nov 2026. Simba 3.0 and 3.2 bill $10/$8/$6 per 1M characters. If that runs to zero too, requests pause until you add funds, so switch on auto top-up if production must never stall. It is off until you turn it on. Free cannot top up at all and simply pauses until the next billing cycle. On a paid plan the console flags a low balance, and we email you if requests start being refused for credit.

Q: How do I add more money?
A: From Billing in the console. You can buy a top-up whenever you like, and turn on auto top-up to add a set amount whenever the balance drops below a threshold. A top-up is paid up front and does not expire. Auto top-up stays off until you turn it on. It is all in dollars at the published rates, so there are no opaque credit units and no guessing what a request costs. The free tier cannot top up.

Q: Can I switch plans at any time?
A: Yes, from Billing in the console. An upgrade applies immediately: the new plan's monthly fee is charged that day, which becomes your new billing date. A downgrade or cancellation takes effect at the end of your current billing month, so you keep the plan and its included usage until then.

Q: What payment methods do you accept?
A: Cards, processed by Stripe. You add one in the console under Billing, and the free tier needs none. Enterprise payment terms follow your agreement.