Velma Transcribe by Modulate

Lowest cost.
Lowest error rate. Transcription that just works.

Stop overpaying for transcription that breaks on messy audio. Modulate delivers up to 10x better cost performance and understands real conversations — not just studio recordings.

Velma Transcribe is Modulate’s speech-to-text API for batch and real-time streaming transcription.

Proven #1 Most Accurate for Real Conversations

Save over 90% on transcription costs

Compare Velma Transcribe
to the competition

Transcription Benchmark (Accuracy vs. Price)
Average Word Error Rate (WER) across Earnings-22 and VoxPopuli datasets
Lowest WER lowest cost
Cost per 1000 minutes of audio
Avg. Word Error Rate
modulate-velma-2
elevenlabs-scribe-v2
google-gemini-2.5-pro
assemblyai-universal
speechmatics-enhanced
gladia-solaria-1
openai-gpt-4o-transcribe
google-chirp-2
speechmatics-standard
openai-whisper-large-v3
deepgram-nova-3
8
9
10
11
12 %
$0
1
2
3
4
5
6
7
8
$9
Transcription API Cost Comparison among STT Leaders
Cost per audio hour transcribed
Modulate
$0.03
modulate-velma-2
AssemblyAI
$0.15
universal
Deepgram
$0.26
nova-2
ElevenLabs
$0.40
scribe-v2
See the comparison for yourself

A Side-by-Side Comparison for Teams
Evaluating Transcription Providers

Feature
Modulate
Competitors
Real-World Accuracy
Lowest Word Error Rate
Strong on clean audio; weak on messy speech
Cost
3c per hour
15c to 50c per hour
Overlapping speakers
Handles naturally
Underperforms in complex multi-speaker audio
Training Data
500M+ hours of conversations
Primarily curated / structured datasets
Streaming Support
Real-time streaming
Real-time streaming
Emotion Detection
20+ emotions
None
Accent detection
20+ accents
None
PII / PHI redaction
Yes
Yes
Diarization
Yes
Yes
Language Support
57 distinct plus dialects
50+ distinct plus dialects

Starting at 3 cents per hour

Speech-to-text that stays clean when conversations get messy.

Many speech-to-text APIs depend on clean audio, but degrade when real conversation begins—people interrupt each other, speakers overlap, and audio quality shifts.

Velma Transcribe is designed for support calls, business meetings, social chats, and other dynamic environments where accuracy is key.

Velma Transcribe is best for:

Call center transcription and QA workflows

Real-time voice agents and assistants

Social and gaming chats

Meeting transcription and meeting intelligence

Large-scale transcription pipelines where cost matters

Why teams choose Velma.

Velma Transcribe is built to solve the practical problems that matter in production transcription systems: accuracy, stability, latency, and unit economics.

Quality and cost don’t have to compete

Half a billion hours of audio to train on and a world-class team focused purely on audio AI means we can offer the world’s most accurate solution while also being the most cost-effective

Conversation-first transcription accuracy

Velma is optimized for conversational speech, offering robust accuracy in the face of overlaps, interruptions, and informal dialogue.

Sub-second real-time streaming transcription

Velma supports low-latency streaming transcription suitable for live UI, agent pipelines, and real-time systems.

Better transcripts improve everything downstream

Higher transcription accuracy improves meeting summaries, analytics, compliance, search, and LLM workflows.

Built for developers shipping production systems

Velma Transcribe is designed to integrate cleanly into modern infrastructure.

REST endpoints for batch transcription

Streaming endpoints for real-time transcription

Predictable structured output for downstream pipelines

Built for scalable high-throughput workloads

Velma API is designed to work well with analytics stacks, search systems, and LLM-based workflows.

Read the docs

Velma Transcribe sets a new standard for speech-to-text

Most speech-to-text providers optimize for general transcription. Velma Transcribe is specifically optimized for conversational speech and favorable economics at scale. And we’re not afraid to prove it. We’ve published a tool to directly compare the unaltered results from four top speech-to-text APIs - see for yourself how we compare on cost, latency, and accuracy over alternatives like Deepgram and AssemblyAI.

Benchmark against your provider

Get started with Velma Transcribe now.

Get immediate access to the API with up to 400 hours in free credits