kitio.aiModulate vs SpeechFlow
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Modulate starts at See pricing page and SpeechFlow starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- ToxMod voice moderation
- Speech-to-text API
- Deepfake voice detection
- Emotion and accent detection
- PII/PHI redaction
- Batch and streaming modes
- Speech-to-text API
- Online transcription
- 14 languages
- Time-aligned transcripts
- VPC and on-prem deployment
| Feature | Modulate | SpeechFlow |
|---|---|---|
| Best for | Voice AI for moderation, transcription and deepfake detection | Speech-to-text API transcribing 14 languages |
| Category | Audio & voice | Audio & voice |
| Pricing model | Paid | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | No | Yes |
| Made by | Modulate | SpeechFlow |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Both offer: Speech-to-text API.
Pricing compared
Modulate starts at See pricing page and SpeechFlow starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
English Fast Speech-to-Text
$0.025 / audio hour
- English only
- Batch rate; streaming costs more
Multilingual Speech-to-Text
$0.03 / audio hour
- 70+ languages
- Speaker diarization
Deepfake Voice Detection
$0.25 / audio hour
- Flags cloned and bot voices
- Minimum $0.05 per call
Velma Triage
$0.75 / audio hour
- Up to 10 behaviors
- $1.25/hour for up to 25
3 plans
Free
Free
- 10 min online transcription
- 30 min API transcription
- 1 file at a time
On Demand
$0.0002 / second
- 10 files at a time
- Online support
Enterprise
Contact sales
- VPC or on-prem deployment
- Dedicated support
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Modulate
- Low per-hour transcription prices
- Detects synthetic and cloned voices
- Built for live voice moderation at scale
- Usage-based billing only
- Add-ons like emotion tagging cost extra
- Main platform aimed at enterprises
SpeechFlow
- Per-second billing
- Strong coverage of Asian languages
- On-prem option for enterprises
- Only 14 languages
- Free tier is very small
- Concurrency limits on lower tiers
Which one should you choose?
Choose Modulate if you want:
- Low per-hour transcription prices
- Detects synthetic and cloned voices
- Built for live voice moderation at scale
Watch out: usage-based billing only.
Choose SpeechFlow if you want:
- Per-second billing
- Strong coverage of Asian languages
- On-prem option for enterprises
Watch out: only 14 languages.
Modulate vs SpeechFlow FAQ
What is the difference between Modulate and SpeechFlow?
Modulate: Voice AI for moderation, transcription and deepfake detection. SpeechFlow: Speech-to-text API transcribing 14 languages. Both are audio & voice tools.
Is Modulate or SpeechFlow cheaper?
Modulate starts at See pricing page and SpeechFlow starts at See pricing page. Check both pricing pages for current plans.
Do Modulate and SpeechFlow have free plans?
Modulate: No. SpeechFlow: Yes.
Who makes Modulate?
Modulate is made by Modulate, based in United States.
Who makes SpeechFlow?
SpeechFlow is made by SpeechFlow.
Which should I choose, Modulate or SpeechFlow?
Choose Modulate if you value low per-hour transcription prices and detects synthetic and cloned voices. Choose SpeechFlow if you value per-second billing and strong coverage of asian languages.