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  5. Speech & Transcription

Category · Speech & Transcription

Speech & Transcription — agent-ready pricing benchmark

Per-minute pricing common. STT vendors are quietly some of the most agent-ready APIs in the index.

10 companies
Avg score 55.9 / 100
1 Agent-Ready Verified
6 Approaching Agent-Ready
3 Not Agent-Ready Yet
#1
Soniox
soniox.com · Speech & Transcription
86
/ 100
Agent-Ready Verified
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.
#2
ElevenLabs
elevenlabs.io · Speech & Transcription
79
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that ElevenLabs exposes seven self-serve tiers from $0 Free to $990/mo Business with a credit-based metering system, plus a per-minute calculator. Public docs and Stripe checkout are both unauthenticated. The credit denomination (versus a clean $/character or $/minute rate) docks one usage-based dimension point because per-unit cost is implied rather than directly published, but the system is transparent and PAYG-like in practice.
#3
Deepgram
deepgram.com · Speech & Transcription
77
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that Deepgram exposes a complete per-minute STT, per-character TTS, and per-minute Voice Agent rate card on a fully indexable HTML page, alongside a $200 no-credit-card starting credit. Self-serve PAYG and a public developer documentation site at developers.deepgram.com complete a strongly agent-friendly profile.
#4
AssemblyAI
assemblyai.com · Speech & Transcription
74
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that AssemblyAI publishes per-hour rates across STT, streaming, voice agent, and per-hour speech-understanding add-ons, with a $50 no-credit-card starting balance and a fully public docs site. The pricing page itself behaves like an API rate card, which is unusually well-suited to autonomous agent procurement.
#5
Speechmatics
speechmatics.com · Speech & Transcription
74
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that Speechmatics publishes per-hour STT and per-1k-character TTS rates across Free, Pro, and Enterprise tiers, with a generous 8-hour-per-month free allowance and no card required to start. Self-serve signup at portal.speechmatics.com completes the agent-ready loop for the Pro tier.
#6
Symbl.ai
symbl.ai · Speech & Transcription
74
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that Symbl.ai publishes a tiered per-minute and per-word PAYG rate card with a generous 1,000-min/month free tier and self-serve signup. Public docs are open and the pricing structure is fully usage-based with declining per-minute rates as volume grows.
#7
Gladia
gladia.io · Speech & Transcription
71
/ 100
Approaching Agent-Ready
Based on public pricing signals, xpay verified that Gladia publishes per-hour Starter rates ($0.61 async, $0.75 real-time) with a 10 hr/month no-card free tier, plus public developer documentation at docs.gladia.io. Growth and Enterprise tier rates require a sales conversation, but the Starter tier is fully self-serve via Stripe-backed checkout (per FAQ).
#8
Rev.ai
rev.ai · Speech & Transcription
8
/ 100
Not Agent-Ready Yet
xpay observed that the Rev.ai pricing URL currently routes prospects to a sales scheduling form rather than a public rate card; no per-minute number, tier table, or self-serve checkout flow is exposed on the page. Public developer documentation at docs.rev.ai is open, which is a strong starting position from which an agent-ready PPU surface could be reintroduced. Sub-50 score reflects opportunity, not deficit: a single rate-card relaunch would move Rev.ai materially up the index.
#9
SpeechFlow
speechflow.io · Speech & Transcription
8
/ 100
Not Agent-Ready Yet
xpay observed that the SpeechFlow pricing page returned no machine-readable pricing content during the live Firecrawl pull on 2026-05-03 — the page appears to require JavaScript execution that the scraper could not fully resolve. Public docs at docs.speechflow.io are accessible. The opportunity here is to ship a server-rendered or static rate card so agents (and search engines) can read prices without a headless browser.
#10
PlayHT
play.ht · Speech & Transcription
8
/ 100
Not Agent-Ready Yet
xpay attempted to score PlayHT on 2026-05-03 and found that DNS resolution failed for play.ht, www.play.ht, and play.ai during the live pull, so no pricing content could be observed. The opportunity is to publish a stable, indexable pricing URL (and equally important, ensure DNS reachability for crawlers) so agents can discover and transact against PlayHT's TTS rates. This score reflects observability at scrape time and should be revisited if the pricing surface returns.
#CompanyScoreBadgeDiagnostic
1
Sonioxsoniox.com
86 / 100
Agent-Ready Verified

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…

2
ElevenLabselevenlabs.io
79 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that ElevenLabs exposes seven self-serve tiers from $0 Free to $990/mo Business with a credit-based metering system, plus a per-minute calculator. Public…

3
Deepgramdeepgram.com
77 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that Deepgram exposes a complete per-minute STT, per-character TTS, and per-minute Voice Agent rate card on a fully indexable HTML page, alongside a $200…

4
AssemblyAIassemblyai.com
74 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that AssemblyAI publishes per-hour rates across STT, streaming, voice agent, and per-hour speech-understanding add-ons, with a $50 no-credit-card startin…

5
Speechmaticsspeechmatics.com
74 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that Speechmatics publishes per-hour STT and per-1k-character TTS rates across Free, Pro, and Enterprise tiers, with a generous 8-hour-per-month free all…

6
Symbl.aisymbl.ai
74 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that Symbl.ai publishes a tiered per-minute and per-word PAYG rate card with a generous 1,000-min/month free tier and self-serve signup. Public docs are …

7
Gladiagladia.io
71 / 100
Approaching Agent-Ready

Based on public pricing signals, xpay verified that Gladia publishes per-hour Starter rates ($0.61 async, $0.75 real-time) with a 10 hr/month no-card free tier, plus public developer documentation at …

8
Rev.airev.ai
8 / 100
Not Agent-Ready Yet

xpay observed that the Rev.ai pricing URL currently routes prospects to a sales scheduling form rather than a public rate card; no per-minute number, tier table, or self-serve checkout flow is exposed…

9
SpeechFlowspeechflow.io
8 / 100
Not Agent-Ready Yet

xpay observed that the SpeechFlow pricing page returned no machine-readable pricing content during the live Firecrawl pull on 2026-05-03 — the page appears to require JavaScript execution that the scr…

10
PlayHTplay.ht
8 / 100
Not Agent-Ready Yet

xpay attempted to score PlayHT on 2026-05-03 and found that DNS resolution failed for play.ht, www.play.ht, and play.ai during the live pull, so no pricing content could be observed. The opportunity i…

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