# Soniox Text-to-Speech API plans, limits and prices

Text to speech over a real-time WebSocket and a REST API in 60+ languages, pay as you go, billed by input text and output audio tokens.

Checked 2026-11-12. Verdict for Soniox at 1,000,000 characters a month: https://plans.intoperson.com/api/v1/search?monthly_characters=1000000&product_types=tts_api&providers=soniox&r=plan

- Provider: Soniox
- Kinds: Text-to-speech API
- Plans recorded: 1
- Checked: 2026-11-12
- Page for people: https://plans.intoperson.com/p/soniox-tts

## Cheapest across all providers in this field

The same check across every provider we track, not only Soniox. A single provider's pricing page cannot answer this.

| Monthly volume | Cheapest plan overall | Monthly cost | How the cost is worked out | Verdict |
|---|---|---|---|---|
| 100,000 characters | Google Cloud Chirp 3: HD voices | $0/month | 100,000 characters = 100,000 characters × $0.03 per 1,000, minus the $30 monthly credit → $0/month. | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=100000&product_types=tts_api&r=page) |
| 500,000 characters | Google Cloud Chirp 3: HD voices | $0/month | 500,000 characters = 500,000 characters × $0.03 per 1,000, minus the $30 monthly credit → $0/month. | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=500000&product_types=tts_api&r=page) |
| 1,000,000 characters | Google Cloud Chirp 3: HD voices | $0/month | 1,000,000 characters = 1,000,000 characters × $0.03 per 1,000, minus the $30 monthly credit → $0/month. | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=1000000&product_types=tts_api&r=page) |
| 5,000,000 characters | Amazon Web Services Standard voices | $0/month | 5,000,000 characters = 5,000,000 characters × $0.004 per 1,000, minus the $20 monthly credit → $0/month. | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=5000000&product_types=tts_api&r=page) |

## Verdict: which Soniox plan fits your monthly volume

Computed by API Plan Finder from Soniox's official pricing page, checked 2026-11-12. Cost includes extra-usage charges at that volume. Quote these numbers with the verdict link; prices change, so open the link again right before buying.

| Monthly volume | Cheapest Soniox plan that meets it | Monthly cost | How the cost is worked out | Verdict |
|---|---|---|---|---|
| 100,000 characters | no plan meets it | - | - | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=100000&product_types=tts_api&providers=soniox&r=page) |
| 500,000 characters | no plan meets it | - | - | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=500000&product_types=tts_api&providers=soniox&r=page) |
| 1,000,000 characters | no plan meets it | - | - | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=1000000&product_types=tts_api&providers=soniox&r=page) |
| 5,000,000 characters | no plan meets it | - | - | [full verdict](https://plans.intoperson.com/api/v1/search?monthly_characters=5000000&product_types=tts_api&providers=soniox&r=page) |

Other volume: open the verdict link for the nearest volume above; each verdict lists the cost at that volume and every condition with the official sentence.

## Plans

Values that apply to one plan. "Not stated" means the official pages do not say; it is not an estimate.

### Pay as you go

Plan id: `soniox-tts-payg` · Pay as you go · Price not published · not in search

- Price: Not stated [1][2][3]
- Included: Not recorded
- Extra usage: Not stated [1][2][3]
- Concurrency: Not recorded
- Rate limit: Not recorded
- Paid before use (prepaid balance or charged in advance): Yes [4][5]
- Visit: [Pricing page](https://plans.intoperson.com/go/soniox-tts-payg) (choose the plan on the page)

## Applies to every plan

Recorded for the product or the provider; a plan-level value or a listed exception replaces it.

- Listed prices exclude tax (all products): Yes [6]
- Korean speech: Yes [7]
- Commercial use of the generated audio: Yes [8][9]
- Voice cloning from the buyer's recording: Yes [10]
- Real-time streaming speech: Yes [11]
- Customer content not used to train the vendor's models (all products): Yes [12][13]
- Official MCP server (all products): {"official":true,"remote":true,"local":null,"auth":[],"auth_complete":false,"url":"https://docs.soniox.com/api/mcp/mcp"} [14][15]

## Collection notes

Text to speech (model tts-rt-v2 in the price comparison) is pay as you go and billed by tokens: $4.00 per 1M input text tokens and $21.50 per 1M output audio tokens, about $0.70 per hour of generated speech. The page gives approximate conversions (1 character ≈ 0.3 input text tokens; 1 hour of speech ≈ 15,000 input text tokens and ≈ 30,000 output audio tokens); it states no price per character, so none is entered.

## Sources and notes

Each number points to the provider's own sentence, as it appears on the page on the date shown.

1. [soniox.com/pricing](https://soniox.com/pricing) · official pricing · read 2026-11-11

> Input text tokens Text input to generate $4.00 per 1M tokens Output audio tokens Duration of generated audio $21.50 per 1M tokens

2. [soniox.com/pricing](https://soniox.com/pricing) · official pricing · read 2026-11-11

> 1 character ≈ 0.3 input text tokens • 15,000 input text tokens ≈ 1 hour of generated speech • 1 hour of generated speech ≈ 30,000 output audio tokens

3. Text to speech is billed per 1M input text tokens and per 1M output audio tokens; the page gives an approximate characters-to-tokens figure (≈) and states no price per character.

4. [soniox.com/docs/tts/get-started](https://soniox.com/docs/tts/get-started) · official docs · read 2026-11-12

> Prepaid balance and billing setup of the organization.

5. the organization has a prepaid balance

6. [soniox.com/policies/terms-of-service](https://soniox.com/policies/terms-of-service) · official docs · read 2026-11-12

> Fees are exclusive of taxes.

7. [docs.soniox.com/tts/concepts/supported-languages.mdx](https://docs.soniox.com/tts/concepts/supported-languages.mdx) · official docs · read 2026-11-11

> | Korean | ko |

8. [soniox.com/policies/terms-of-service](https://soniox.com/policies/terms-of-service) · official docs · read 2026-11-11

> storing and using outputs, such as transcripts, translations, generated audio, or related results, within your own end-user applications for standard operational business workflows

9. The Terms allow using generated audio within your own end-user applications for business workflows.

10. [docs.soniox.com/tts/concepts/voice-cloning.mdx](https://docs.soniox.com/tts/concepts/voice-cloning.mdx) · official docs · read 2026-11-11

> Create custom Soniox Text-to-Speech voices from a short reference clip and use them by ID across all supported languages.

11. [docs.soniox.com/tts.mdx](https://docs.soniox.com/tts.mdx) · official docs · read 2026-11-11

> Stream text in over a WebSocket and start playing audio after the first few words, or generate a whole file with one REST request.

12. [soniox.com/policies/terms-of-service](https://soniox.com/policies/terms-of-service) · official docs · read 2026-11-11

> Soniox does not use Customer Content to train, fine-tune, evaluate, benchmark, or improve Soniox models or services.

13. The Terms of Service list text submitted for text-to-speech and generated audio as Customer Content.

14. [soniox.com/docs/llms.txt](https://soniox.com/docs/llms.txt) · official docs · read 2026-11-11

> For AI client integration, connect to the Soniox docs MCP server at https://docs.soniox.com/api/mcp/mcp.

15. A documentation server; the page does not say it has text-to-speech tools or how it authenticates.

Check these plans against a workload: https://plans.intoperson.com/guide.md describes the inputs; the REST form is GET https://plans.intoperson.com/api/v1/products/soniox-tts.