Speech-to-Text API Pricing Comparison

Compare ten providers on the bill for your recorded audio. Start with monthly minutes, then include word timestamps, speaker diarization and audio labels. See which plan fits your workload and how live transcription pricing differs from processing existing recordings.

Sketch of a man weighing two options with his open hands.

Recorded Audio

Compare the Monthly Bill

Four workloads, with each product and plan shown separately. Bold totals mark the lowest listed cost for that workload and feature set.

Base Transcription Totals
Provider and Product600 min 10 hours6000 min 100 hours21,600 min 360 hours60,000 min 1000 hours
Speech is Cheap PAYG$1.20$12.00$43.20$120.00
Speech is Cheap Subscription$20.00$20.00$20.00$55.56
AssemblyAI Universal-2$1.50$15.00$54.00$150.00
AssemblyAI Universal-3.5 Pro$2.10$21.00$75.60$210.00
Deepgram Nova-3 Monolingual PAYG$2.58$25.80$92.88$258.00
Deepgram Nova-3 Multilingual PAYG$3.12$31.20$112.32$312.00
OpenAI whisper-1 (Sunset)$3.60$36.00$129.60$360.00
OpenAI GPT-Transcribe$2.70$27.00$97.20$270.00
OpenAI 4o Mini (Estimate, Sunset)$1.80$18.00$64.80$180.00
OpenAI 4o Diarize (Estimate, Sunset)$3.60$36.00$129.60$360.00
Rev AI Reverb English$2.00$20.00$72.00$200.00
Rev AI Reverb Other Languages$3.00$30.00$108.00$300.00
Google Cloud Standard, Chirp 3$9.60$96.00$345.60$960.00
Google Cloud Dynamic Batch, Chirp 3$1.80$18.00$64.80$180.00
Amazon Transcribe Standard Batch, US East$3.60$36.00$129.60$360.00
Azure Speech Batch$1.80$18.00$64.80$180.00
Azure Speech Fast$3.60$36.00$129.60$360.00
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31$1.00$10.00$36.00$100.00
Gladia Recorded Starter$6.10$61.00$219.60$610.00
Speechmatics Melia 1, Early Access$1.29$12.90$46.44$116.10
Speechmatics Standard$2.40$24.00$86.40$216.00
Speechmatics Enhanced$4.00$40.00$144.00$360.00
Transcription and Word Timestamps
Transcription and Word Timestamps: Monthly Totals
Provider and Product600 min 10 hours6000 min 100 hours21,600 min 360 hours60,000 min 1000 hours
Speech is Cheap PAYG$1.80$18.00$64.80$180.00
Speech is Cheap Subscription$20.30$23.00$30.80$85.56
AssemblyAI Universal-2$1.50$15.00$54.00$150.00
AssemblyAI Universal-3.5 Pro$2.10$21.00$75.60$210.00
Deepgram Nova-3 Monolingual PAYG$2.58$25.80$92.88$258.00
Deepgram Nova-3 Multilingual PAYG$3.12$31.20$112.32$312.00
OpenAI whisper-1 (Sunset)$3.60$36.00$129.60$360.00
OpenAI GPT-Transcribe--------
OpenAI 4o Mini (Estimate, Sunset)--------
OpenAI 4o Diarize (Estimate, Sunset)--------
Rev AI Reverb English$2.00$20.00$72.00$200.00
Rev AI Reverb Other Languages$3.00$30.00$108.00$300.00
Google Cloud Standard, Chirp 3--------
Google Cloud Dynamic Batch, Chirp 3--------
Amazon Transcribe Standard Batch, US East$3.60$36.00$129.60$360.00
Azure Speech Batch$1.80$18.00$64.80$180.00
Azure Speech Fast$3.60$36.00$129.60$360.00
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31$1.00$10.00$36.00$100.00
Gladia Recorded Starter$6.10$61.00$219.60$610.00
Speechmatics Melia 1, Early Access$1.29$12.90$46.44$116.10
Speechmatics Standard$2.40$24.00$86.40$216.00
Speechmatics Enhanced$4.00$40.00$144.00$360.00
Transcription and Speaker Diarization
Transcription and Speaker Diarization: Monthly Totals
Provider and Product600 min 10 hours6000 min 100 hours21,600 min 360 hours60,000 min 1000 hours
Speech is Cheap PAYG$2.40$24.00$86.40$240.00
Speech is Cheap Subscription$20.60$26.00$41.60$115.56
AssemblyAI Universal-2$1.70$17.00$61.20$170.00
AssemblyAI Universal-3.5 Pro$2.30$23.00$82.80$230.00
Deepgram Nova-3 Monolingual PAYG$2.58$25.80$92.88$258.00
Deepgram Nova-3 Multilingual PAYG$3.12$31.20$112.32$312.00
OpenAI whisper-1 (Sunset)--------
OpenAI GPT-Transcribe--------
OpenAI 4o Mini (Estimate, Sunset)--------
OpenAI 4o Diarize (Estimate, Sunset)$3.60$36.00$129.60$360.00
Rev AI Reverb English$2.00$20.00$72.00$200.00
Rev AI Reverb Other Languages$3.00$30.00$108.00$300.00
Google Cloud Standard, Chirp 3$9.60$96.00$345.60$960.00
Google Cloud Dynamic Batch, Chirp 3$1.80$18.00$64.80$180.00
Amazon Transcribe Standard Batch, US East$3.60$36.00$129.60$360.00
Azure Speech Batch$1.80$18.00$64.80$180.00
Azure Speech Fast$3.60$36.00$129.60$360.00
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31$1.00$10.00$36.00$100.00
Gladia Recorded Starter$6.10$61.00$219.60$610.00
Speechmatics Melia 1, Early Access$1.29$12.90$46.44$116.10
Speechmatics Standard$2.40$24.00$86.40$216.00
Speechmatics Enhanced$4.00$40.00$144.00$360.00
Transcription, Words and Speakers
Transcription, Words and Speakers: Monthly Totals
Provider and Product600 min 10 hours6000 min 100 hours21,600 min 360 hours60,000 min 1000 hours
Speech is Cheap PAYG$3.00$30.00$108.00$300.00
Speech is Cheap Subscription$20.90$29.00$52.40$145.56
AssemblyAI Universal-2$1.70$17.00$61.20$170.00
AssemblyAI Universal-3.5 Pro$2.30$23.00$82.80$230.00
Deepgram Nova-3 Monolingual PAYG$2.58$25.80$92.88$258.00
Deepgram Nova-3 Multilingual PAYG$3.12$31.20$112.32$312.00
OpenAI whisper-1 (Sunset)--------
OpenAI GPT-Transcribe--------
OpenAI 4o Mini (Estimate, Sunset)--------
OpenAI 4o Diarize (Estimate, Sunset)--------
Rev AI Reverb English$2.00$20.00$72.00$200.00
Rev AI Reverb Other Languages$3.00$30.00$108.00$300.00
Google Cloud Standard, Chirp 3--------
Google Cloud Dynamic Batch, Chirp 3--------
Amazon Transcribe Standard Batch, US East$3.60$36.00$129.60$360.00
Azure Speech Batch$1.80$18.00$64.80$180.00
Azure Speech Fast$3.60$36.00$129.60$360.00
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31$1.00$10.00$36.00$100.00
Gladia Recorded Starter$6.10$61.00$219.60$610.00
Speechmatics Melia 1, Early Access$1.29$12.90$46.44$116.10
Speechmatics Standard$2.40$24.00$86.40$216.00
Speechmatics Enhanced$4.00$40.00$144.00$360.00
Transcription and Audio Labels
Transcription and Audio Labels: Monthly Totals
Provider and Product600 min 10 hours6000 min 100 hours21,600 min 360 hours60,000 min 1000 hours
Speech is Cheap PAYG$1.32$13.20$47.52$132.00
Speech is Cheap Subscription$20.06$20.60$22.16$61.56
AssemblyAI Universal-2--------
AssemblyAI Universal-3.5 Pro--------
Deepgram Nova-3 Monolingual PAYG--------
Deepgram Nova-3 Multilingual PAYG--------
OpenAI whisper-1 (Sunset)--------
OpenAI GPT-Transcribe--------
OpenAI 4o Mini (Estimate, Sunset)--------
OpenAI 4o Diarize (Estimate, Sunset)--------
Rev AI Reverb English--------
Rev AI Reverb Other Languages--------
Google Cloud Standard, Chirp 3--------
Google Cloud Dynamic Batch, Chirp 3--------
Amazon Transcribe Standard Batch, US East--------
Azure Speech Batch--------
Azure Speech Fast--------
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31--------
Gladia Recorded Starter--------
Speechmatics Melia 1, Early Access--------
Speechmatics Standard$2.40$24.00$86.40$216.00
Speechmatics Enhanced$4.00$40.00$144.00$360.00

-- means no verified price for the selected product or feature combination. It never means free. This applies to every table and the linked calculators.

Separate the Base Rate from Add-ons

Words are word-level timestamps. Speakers are voice-based diarization. Included features add no charge to the selected product's base rate.

Recorded Rates and Add-ons
Provider and ProductBase / MinuteWords / MinuteSpeakers / MinuteAudio Labels / Minute
Speech is Cheap PAYG Speech is Cheap Pricing$0.002 $0.12 / hour$0.001$0.002$0.0002
Speech is Cheap Subscription Speech is Cheap Pricing$20.00 / month Includes 21,600 minutes. Overage $0.000926 / min$0.0005$0.001$0.0001
AssemblyAI Universal-2 AssemblyAI Pricing$0.0025 $0.15 / hourIncluded$0.000333--
AssemblyAI Universal-3.5 Pro AssemblyAI Pricing$0.0035 $0.21 / hourIncluded$0.000333--
Deepgram Nova-3 Monolingual PAYG Deepgram Pricing ; Deepgram Recorded Audio API$0.0043 $0.258 / hourIncludedIncluded--
Deepgram Nova-3 Multilingual PAYG Deepgram Pricing ; Deepgram Recorded Audio API$0.0052 $0.312 / hourIncludedIncluded--
OpenAI whisper-1 (Sunset) OpenAI Whisper Model and Price ; OpenAI API Pricing ; OpenAI Diarization Model ; OpenAI File Transcription Guide$0.006 $0.36 / hourIncluded----
OpenAI GPT-Transcribe OpenAI Whisper Model and Price ; OpenAI API Pricing ; OpenAI Diarization Model ; OpenAI File Transcription Guide$0.0045 $0.27 / hour------
OpenAI 4o Mini (Estimate, Sunset) OpenAI Whisper Model and Price ; OpenAI API Pricing ; OpenAI Diarization Model ; OpenAI File Transcription Guide$0.003 $0.18 / hour------
OpenAI 4o Diarize (Estimate, Sunset) OpenAI Whisper Model and Price ; OpenAI API Pricing ; OpenAI Diarization Model ; OpenAI File Transcription Guide$0.006 $0.36 / hour--Included--
Rev AI Reverb English Rev AI Pricing ; Rev AI Transcript Features ; Rev AI Changelog$0.003333 $0.2 / hourIncludedIncluded--
Rev AI Reverb Other Languages Rev AI Pricing ; Rev AI Transcript Features ; Rev AI Changelog$0.005 $0.3 / hourIncludedIncluded--
Google Cloud Standard, Chirp 3 Google Cloud Speech-to-Text Pricing ; Google Cloud Chirp 3 Features and Limits ; Google Cloud Recognition Configuration$0.016 $0.96 / hour--Included--
Google Cloud Dynamic Batch, Chirp 3 Google Cloud Speech-to-Text Pricing ; Google Cloud Chirp 3 Features and Limits ; Google Cloud Recognition Configuration$0.003 $0.18 / hour--Included--
Amazon Transcribe Standard Batch, US East Amazon Transcribe Pricing ; Amazon Transcribe US East Price List$0.006 $0.36 / hourIncludedIncluded--
Azure Speech Batch Azure Speech Pricing ; Azure Speech East US Retail Prices ; Microsoft MAI-Transcribe-2 Launch and Promotional Price ; Azure MAI-Transcribe Features and Preview Limits$0.003 $0.18 / hourIncludedIncluded--
Azure Speech Fast Azure Speech Pricing ; Azure Speech East US Retail Prices ; Microsoft MAI-Transcribe-2 Launch and Promotional Price ; Azure MAI-Transcribe Features and Preview Limits$0.006 $0.36 / hourIncludedIncluded--
Azure Speech MAI-2 Preview Promo Promo Ends 2026-12-31 Azure Speech Pricing ; Azure Speech East US Retail Prices ; Microsoft MAI-Transcribe-2 Launch and Promotional Price ; Azure MAI-Transcribe Features and Preview Limits$0.001667 $0.1 / hourIncludedIncluded--
Gladia Recorded Starter Gladia Pricing ; Gladia Transcription Pricing Explained$0.010167 $0.61 / hourIncludedIncluded--
Speechmatics Melia 1, Early Access Speechmatics Pricing and Volume Discounts ; Speechmatics Model Comparison$0.00215 $0.129 / hourIncludedIncluded--
Speechmatics Standard Speechmatics Pricing and Volume Discounts ; Speechmatics Model Comparison$0.004 $0.24 / hourIncludedIncludedIncluded
Speechmatics Enhanced Speechmatics Pricing and Volume Discounts ; Speechmatics Model Comparison$0.006667 $0.4 / hourIncludedIncludedIncluded

Rates are displayed to six decimal places. Totals use the unrounded source rates and applicable volume tiers. Billing rules and output differences are explained below.

What Changes the Lowest Bill?

Named workloads make the price differences reproducible. Each example points back to the product rows above.

A Recurring Recording Library

At 21,600 base minutes, Speech is Cheap Subscription costs $20.00. AssemblyAI Universal-2 costs $54.00, or 2.7× our bill. Deepgram Nova-3 Monolingual PAYG costs $92.88, or 4.64× our bill.

See the Base Totals

Conversations with Words and Speakers

At 6000 minutes with both features, Speech is Cheap Subscription costs $29.00 and PAYG costs $30.00. AssemblyAI Universal-2 costs $17.00; Speechmatics Melia 1 costs $12.90. Included features change the result.

See the Add-on Tables

A Small Base-Only Workload

At 600 base minutes, Speech is Cheap PAYG costs $1.20. Azure MAI-2 Preview Promo costs $1.00. That promotional price ends 2026-12-31 and has preview restrictions. A $20.00 subscription is unnecessary at this volume.

Review Azure's Preview Limits

File duration matters too. For 100 six-second clips, Speech is Cheap PAYG bills 100 minutes and costs $0.20. AssemblyAI Universal-2 prorates the ten minutes of audio and costs $0.03. A whole-minute workload cannot predict that short-clip bill.

Choose a live service for microphone input. Compare deployment location, required contracts, language support and the results on your own recordings before selecting a provider. Speech is Cheap's recorded API does not replace live input or a self-hosted deployment.

Live Audio

Price Streaming as a Separate Service

These reference rates apply to live input. They do not enter the recorded-workload totals or the cost multiples above.

Live Transcription Reference Rates
Provider and ProductBase / MinuteBilling and Product Boundary
Speech is Cheap Recorded Audio Only--No live-input product. Recorded-job progress SSE does not accept a live microphone. Speech is Cheap Job Requests
AssemblyAI Universal-Streaming$0.0025 $0.15 / hourEnglish or multilingual. Billed on WebSocket-open time, including silence. Diarization adds $0.002 per minute. AssemblyAI Live Pricing ; AssemblyAI Session Billing
AssemblyAI Universal-3.5 Pro Realtime$0.0075 $0.45 / hourBilled on WebSocket-open time. Diarization adds $0.002 per minute. AssemblyAI Live Pricing ; AssemblyAI Session Billing
Deepgram Nova-3 Monolingual PAYG$0.0048 $0.288 / hourPromotional rate; no end date published. Regular rate $0.0077 per minute. Live add-ons are separate. Deepgram Streaming Pricing
Deepgram Nova-3 Multilingual PAYG$0.0058 $0.348 / hourPromotional rate; no end date published. Regular rate $0.0092 per minute. Live add-ons are separate. Deepgram Streaming Pricing
OpenAI GPT-Live-Transcribe$0.017 $1.02 / hourLive transcription billed by audio duration. Voice-agent generation and live translation are different products. OpenAI GPT-Live-Transcribe Pricing
Rev AI Streaming API--Streaming is documented, but a distinct current streaming rate was not established from the public pricing page. Confirm it with Rev AI. Rev AI Pricing ; Rev AI Frequently Asked Questions
Google Cloud V2 Standard Recognition$0.016 $0.96 / hourFirst 500,000 minutes; marginal volume tiers apply. Check the streaming model and language before selecting features. Google Cloud V2 Pricing ; Google Cloud Streaming Recognition
Amazon Transcribe Standard Streaming, US East$0.010002 $0.60012 / hourNorthern Virginia. Exact retail rate is $0.0001667 per second, with no minimum. Call Analytics is separate. Amazon Transcribe Streaming Price List
Azure Speech S1 Standard Realtime, East US$0.016667 $1 / hourPer-second billing. Diarization adds $0.005 per minute. Custom models and commitment tiers are separate. Azure East US Live Retail Prices ; Azure Speech Billing and Features
Gladia Live Starter$0.0125 $0.75 / hourPublic Starter rate. Growth requires an upfront commitment; enterprise terms are quoted separately. Gladia Live Starter Pricing
Speechmatics Realtime Standard$0.004 $0.24 / hour20% marginal discount above 30,000 minutes per model and processing type. Melia 1 is batch-only. Speechmatics Realtime Pricing ; Speechmatics Model Comparison
Speechmatics Realtime Enhanced$0.007167 $0.43 / hour20% marginal discount above 30,000 minutes per model and processing type. The batch Enhanced rate differs. Speechmatics Realtime Pricing

Calculate Your Provider Comparison

Use each provider's calculator for other volumes and supported add-on combinations. Its alternative page also covers capabilities and integration work.

See the 360-Hour Audio Bill Infographic for a shareable example of selected base-transcription prices.

Sources and Verification

Speech is Cheap publishes this comparison and sells one of the products shown. Recorded prices retain their 2026-09-14 and 2026-09-15 checks; new live-price and credit sources were checked on . Review rates monthly and before publication or a material update. A check date records the evidence review, not a guarantee that the offer remains available. Price comparisons do not establish equivalent accuracy, latency, hosting or compliance.

  1. Amazon Transcribe Free Tier Terms

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  2. Amazon Transcribe Input and Output

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  3. Amazon Transcribe Pricing

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  4. Amazon Transcribe Streaming Price List

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  5. Amazon Transcribe US East Price List

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  6. AssemblyAI Billing and Pricing

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  7. AssemblyAI Live Pricing

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  8. AssemblyAI Pricing

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  9. AssemblyAI Session Billing

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  10. Azure Batch Transcription Overview

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  11. Azure East US Live Retail Prices

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  12. Azure Fast Transcription

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  13. Azure MAI-Transcribe Features and Preview Limits

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  14. Azure Speech Billing and Features

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  15. Azure Speech East US Retail Prices

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  16. Azure Speech Pricing

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  17. Deepgram Pricing

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  1. Deepgram Recorded Audio API

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  2. Deepgram Streaming Pricing

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  3. Gladia Live Starter Pricing

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  4. Gladia Pricing

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  5. Gladia Transcription Pricing Explained

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  6. Google Cloud Batch Transcription

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  7. Google Cloud BatchRecognize API

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  8. Google Cloud Chirp 3 Features and Limits

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  9. Google Cloud Recognition Configuration

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  10. Google Cloud Speech Languages and Models

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  11. Google Cloud Speech-to-Text Pricing

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  12. Google Cloud Streaming Recognition

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  13. Google Cloud V2 Pricing

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  14. Microsoft MAI-Transcribe-2 Launch and Promotional Price

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  15. OpenAI API Pricing

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  16. OpenAI Diarization Model

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  17. OpenAI File Transcription Guide

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  1. OpenAI GPT-Live-Transcribe Pricing

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  2. OpenAI GPT-Transcribe Model

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  3. OpenAI Model Deprecations

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  4. OpenAI Open-Source Whisper

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  5. OpenAI Whisper Model and Price

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  6. Rev AI Changelog

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  7. Rev AI Frequently Asked Questions

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  8. Rev AI Pricing

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  9. Rev AI Pricing

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  10. Rev AI Transcript Features

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  11. Speech is Cheap Job Requests

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  12. Speech is Cheap Pricing

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  13. Speechmatics Model Comparison

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  14. Speechmatics Pricing and Volume Discounts

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  15. Speechmatics Realtime Pricing

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Choose a Plan for Your Recorded Audio

Review Speech is Cheap's included minutes, overage and add-ons, then sign up for Subscription or PAYG.

Billing Units and Assumptions

All prices are in USD; promotional credits retain their original currencies below. Recorded examples use single-channel, ten-minute files in one billing month: 60, 600, 2160 or 6000 files, totaling 600, 6000, 21,600 or 60,000 minutes. Selected add-ons apply to every file. Use a supported language and model; the Google examples use supported English audio. These totals exclude taxes, storage, transfer, trial credits, negotiated contracts and optional features that are not selected.

Divide a vendor's hourly price by 60 to get its minute rate. Multiply a per-second price by 60. For each file, apply that provider's duration rounding and minimum first, then sum the billable minutes. Charge each marginal volume band at its own rate and add any fixed plan fee and selected add-ons. The displayed unit rates are rounded; the totals are calculated with full precision and rounded to cents at the end.

Speech is Cheap rounds each file up to a whole minute for base transcription and all enabled add-ons. PAYG total = billed minutes × (base rate + selected add-on rates). Subscription total = $20.00 + max(0, billed minutes − 21,600) × $0.000926 + billed minutes × selected subscription add-on rates. Unused included minutes expire at the end of the billing period. Add-ons are charged even within the base allowance. Speech is Cheap Pricing

A cost multiple = the named competitor's total ÷ the named Speech is Cheap plan's total for the same workload and features. For the library example, $54.00 ÷ $20.00 = 2.7×. Percent saved = 100 × (competitor total − Speech is Cheap total) ÷ competitor total. These calculations describe the named scenarios, not a universal savings range or equal accuracy.

Trial credits can reduce a first bill, and commitments can change recurring rates. They are separate from these standard paid-usage totals. Speech is Cheap's $0 upfront PAYG signup is not a recurring free API allowance. Check each provider's eligibility, expiration, data-use terms and minimum spend before applying a credit or discount to your budget.

Credits and Commitments

AssemblyAI
The pricing page advertises up to 11,100 recorded minutes or 19,980 streaming minutes for evaluation. Check the selected product and account terms; these are not assumed to reset monthly. AssemblyAI Live Pricing
Deepgram
A $200 introductory credit is separate from paid usage. Growth starts at $4000 per year in prepaid credits. Deepgram Streaming Pricing
Rev AI
Trial credits equal 300 minutes of Reverb ASR and can be used across products. Enterprise rates depend on a volume agreement. Rev AI Pricing
Google Cloud
The 60 free monthly minutes listed for V1 are not a V2 allowance. New-customer cloud credits and commitment discounts are separate offers. Google Cloud V2 Pricing
Amazon Transcribe
The pricing page lists 60 free minutes per month for the first 12 months, subject to eligibility. Unused minutes do not roll over. Amazon Transcribe Free Tier Terms
Azure Speech
F0 lists 300 free live-transcription minutes per month. This is not a free batch or fast-transcription allowance. Paid commitment tiers have separate minimum spends. Azure Speech Billing and Features
Gladia
Starter advertises a one-time €50 credit with no monthly reset. It is not converted to dollars or deducted from these totals. Growth requires a separate upfront commitment. Gladia Live Starter Pricing
Speechmatics
New accounts start with $100 in credit. Data-use opt-in discounts and enterprise agreements are separate from the automatic marginal volume discount included here. Speechmatics Realtime Pricing

AssemblyAI

Recorded audio is prorated to the second. Standard paid usage draws from a prepaid balance. Hourly recorded rates are divided by 60. Word timestamps are included; speaker diarization is a separate charge. Live sessions use connection time instead of the recorded-file duration. AssemblyAI Pricing ; AssemblyAI Billing and Pricing

Deepgram

Deepgram Nova-3 PAYG costs $0.0043 per minute for monolingual audio and $0.0052 for multilingual audio, with word timing and speaker diarization included. Billing is per second. Growth pricing requires an upfront commitment and is excluded. Deepgram Pricing ; Deepgram Recorded Audio API

OpenAI

Hosted Whisper costs $0.006 per minute and GPT-Transcribe costs $0.0045. GPT-4o Mini and GPT-4o Diarize columns use minute-based estimates of $0.003 and $0.006 for token-priced models; actual bills can vary. These GPT-4o models and whisper-1 are scheduled to sunset on February 26, 2027. OpenAI Whisper Model and Price ; OpenAI API Pricing ; OpenAI GPT-Transcribe Model ; OpenAI Diarization Model ; OpenAI Model Deprecations

The listed OpenAI models do not have a verified single-call configuration that returns both word timestamps and speaker annotations. Separate inference passes, external diarization, translation and self-hosting are outside these estimates. OpenAI File Transcription Guide ; OpenAI Open-Source Whisper

Rev AI

Rev AI lists Reverb English at $0.20 per audio hour and other supported languages at $0.30, equivalent to approximately $0.003333 and $0.005 per minute. Calculations divide the exact hourly rates by 60. Each job is rounded up to the next second with a 15-second minimum. Standard word timing and diarization are included; premium diarization and human transcription are excluded. Rev AI Pricing ; Rev AI Transcript Features ; Rev AI Changelog

Google Cloud

Google V2 standard tiers are $0.016 per minute for the first 500,000 minutes, $0.01 for the next 500,000, $0.008 for the next 1,000,000, and $0.004 thereafter. Each rate applies only to usage in its tier. Dynamic batch costs $0.003 per minute and can defer processing for up to 24 hours. Billing rounds each request to one-second increments. Google Cloud Speech-to-Text Pricing ; Google Cloud BatchRecognize API

These Chirp 3 estimates use a supported English locale with speaker diarization included. Word-timing combinations remain unpriced because the model page describes optional timestamps under an unsupported-features heading. The generic API configuration field does not resolve that conflict. Google Cloud Chirp 3 Features and Limits ; Google Cloud Recognition Configuration ; Google Cloud Speech Languages and Models

Chirp 3 batch guidance recommends recordings of 1–60 minutes, or up to 20 minutes with word timing. These model-specific limits take precedence over the generic 480-minute batch ceiling. Cloud Storage request charges are additional. Google Cloud Batch Transcription ; Google Cloud Chirp 3 Features and Limits

Amazon Transcribe

AWS standard batch in US East, Northern Virginia, costs $0.0001 per second, equivalent to $0.006 per minute, with one-second billing and no job minimum. The public price list published 2026-09-11 has a single base tier. Standard word timing and speaker diarization are included. Amazon Transcribe Pricing ; Amazon Transcribe US East Price List ; Amazon Transcribe Input and Output

Channel separation has no extra charge in either service. Speech is Cheap assigns one speaker per channel with is_split_channel; AWS standard pricing covers up to two channels. This is separate from identifying voices with Parse Speakers. S3 requests and additional AWS services are outside these totals. Amazon Transcribe Pricing ; Amazon Transcribe Input and Output ; Speech is Cheap Job Requests ; Speech is Cheap Pricing

Azure Speech

Azure East US lists batch at $0.18 per hour and fast transcription at $0.36, equivalent to $0.003 and $0.006 per minute. MAI-2 preview pricing is $0.10 per hour through 2026-12-31. Its listed standard rate is $0.006 per minute, 3.6× the promotion. At 100,000 minutes that is $600 instead of $166.67. Use the listed standard rate to budget for 2027, subject to future Microsoft pricing changes. Azure Speech East US Retail Prices ; Azure Speech Pricing ; Microsoft MAI-Transcribe-2 Launch and Promotional Price

Word timing and speaker diarization are included in the selected paths. MAI-2 enhanced mode documents diarization failures at about 15 minutes and longer, so its combined-feature estimates apply only to shorter recordings. Batch is deferred processing; Fast and MAI-2 use the fast transcription path. Check API-version and preview availability requirements before deployment. Azure MAI-Transcribe Features and Preview Limits ; Azure Batch Transcription Overview ; Azure Fast Transcription ; Azure Speech Pricing

Gladia

Gladia recorded Starter lists $0.61 per hour, approximately $0.010167 per minute, with word timing and speaker diarization included. Calculations divide the exact hourly rate by 60. Growth advertises prices as low as $0.20 per hour with an upfront commitment; the required commitment is unpublished, so Growth is excluded. Gladia Pricing ; Gladia Transcription Pricing Explained

Speechmatics

Speechmatics lists batch rates of $0.129, $0.24 and $0.40 per hour for Melia 1, Standard and Enhanced. Calculations divide those exact rates by 60. The automatic 20% discount applies only to usage above 500 hours, or 30,000 minutes, per model and processing type each month. The separate 33% model-training discount requires data-use opt-in and is excluded. Speechmatics Pricing and Volume Discounts

All three models include word timing and speaker diarization. Melia 1 is early access and has a reduced feature set. The table shows words, speakers and audio labels separately; combine them in the calculator. Speechmatics Model Comparison ; Speechmatics Pricing and Volume Discounts

Audio-label totals compare Speech is Cheap segment labels with Speechmatics Standard and Enhanced Audio Events. Their event taxonomies and output structures differ; Melia 1 is unpriced for this selection. Channel separation is different from voice-based diarization. OpenAI's selected products cannot be combined into one verified words-and-speakers price, and Google's conflicting word-timing documentation leaves those combinations unpriced.