Soniox
Based on public pricing signals, xpay verified that Soniox publishes a token-denominated rate card with explicit hourly equivalents (~$0.10/hr async STT, ~$0.70/hr TTS) on a single transparent pricing page. Public docs are unauthenticated and the entire pricing surface looks built for programmatic discovery — token-per-million pricing is unusually agent-native for the speech category.
Fair, flexible pricing. Built to scale with you. Token-based pricing.
$1.50 / 1M input audio tokens (~$0.10/hr async, ~$0.12/hr real-time STT); ~$0.70/hr TTS
Self-serve
How Soniox scores on the 7 agent-ready dimensions
Public pricing
15 / 15
Usage-based / metered
25 / 25
Self-serve checkout
15 / 15
Public API
15 / 15
Low / no minimum
10 / 10
Unauth automated payment
6 / 10
Bonus (machine-readable pricing)On top of /100 base
0 / 5
Total
86 / 100
Six-step check: can an agent actually buy from Soniox?
Discover price
https://soniox.com/pricing/ — token rates and hourly equivalents visibleSelect a plan
Single PAYG plan; no enterprise tier table on this pagePay per task
$1.50 per 1M input audio tokens at https://soniox.com/pricing/Avoid a sales call
PAYG self-serve via signup, no sales requiredAPI docs without auth
https://soniox.com/docs/ — publicEstimate cost upfront
Token rate + 'usage reference' table with audio-to-token conversions at https://soniox.com/pricing/Pros and cons for AI agents
Observational summary written by xpay from the signals captured on 2026-05-03. Not a review of the product — only of its current pricing posture for agent buyers.- Pricing is publicly visible on an indexable page — agents can read tiers without scraping past auth.
- Per-unit billing is published, so an agent can budget for a single task before committing.
- Every advertised tier is self-serve; no tier requires scheduling a call.
- API documentation is reachable without a login — discovery and integration can happen in one session.
- Per-unit rate is concrete enough that an agent can model expected spend before issuing a request.
- PPU requires account creation and an issued API key; a fully unauthenticated agent purchase is not yet supported.
- No /.well-known/ai-pricing.json or equivalent machine-readable pricing manifest is published — agents must rely on HTML scraping.
How Soniox could lift its score
Soniox is already Verified. Two missing points: (1) publish /.well-known/ai-pricing.json mirroring the per-million-token rates; (2) enable an anonymous one-shot agent purchase via xpay widget. Both lift to 100/100.
| pricing_visible | true |
| headline_phrasing | Fair, flexible pricing. Built to scale with you. Token-based pricing. |
| tier_count | 1 |
| lowest_paid_entry_usd | 0 |
| free_tier | false |
| free_tier_terms | null |
| per_unit_price | $1.50 / 1M input audio tokens (~$0.10/hr async, ~$0.12/hr real-time STT); ~$0.70/hr TTS |
| annual_required | false |
| self_serve_paid_tiers | 1 |
| sales_only_tiers | 0 |
| public_api_docs_url | https://soniox.com/docs/ |
| api_docs_auth_walled | false |
| ai_pricing_json_present | false |
| agents_txt_present | false |
| anonymous_purchase_path | false |
Soniox
86
/ 100 (rubric v1.1)Speech & Transcription
Fair, flexible pricing. Built to scale with you. Token-based pricing.
1
No
Free
$1.50 / 1M input audio tokens (~$0.10/hr async, ~$0.12/hr real-time STT); ~$0.70/hr TTS
1 / 0
Public
No
Not published
2026-05-03