# Deepgram AI vs Speechmatics - Speech Technology Comparison

Source: https://speechmatics-website-git-preview-speechmatics.vercel.app/how-we-compare/deepgram-alternative

Explore how Deepgram stacks up against Speechmatics in accuracy, word error rate, and API performance. See why developers are choosing Speechmatics for speech-to-text.

## Speechmatics vs. Deepgram

See why developers are switching to Speechmatics for superior speech-to-text accuracy, industry-leading language support, and advanced speaker diarization.

**✔️ Better accuracy** 

**✔️ More languages**

**✔️ No gimmicks - trusted, transparent, reliable.**

- [Get $200 Free Credit](https://speechmatics-website-git-preview-speechmatics.vercel.app#switch200)
- [Contact Sales](https://speechmatics-website-git-preview-speechmatics.vercel.app/speak-to-sales)

- [AI Media](https://www.speechmatics.com/product/case-studies/transforming-live-captioning-how-ai-media-are-advancing-real-time) — Delivering 120X more with voice AI
- Pipecat
- mediQuo
- [LiveKit](https://www.speechmatics.com/company/articles-and-news/build-ai-agents-that-understand-who-said-what-livekit) — Enabling 100,000+ developers with leading speech recognition
- Adobe
- NVidia Inception Program
- Vapi
- Humetrix
- [NCI](https://www.speechmatics.com/product/case-studies/nci) — Redefining real-time captioning
- Veritone
- [Media Track](https://www.speechmatics.com/product/case-studies/media-track-enhances-global-media-monitoring-with-speechmatics) — Delivering a 20% leap in accuracy improvements
- Content Guru
- Docbuddy
- Cekura
- Jambonz
- Zylinc
- [Prosodica](https://www.speechmatics.com/product/case-studies/vail-systems-prosodica) — Driving better conversations at scale
- Ubisoft
- Edvak
- ACA Group
- Stenoly
- Nabla
- Speech Intelligence - 3playmedia
- Vodex

## Experience the difference in real-time

Choose from live radio, your own voice, or sample audio to see side-by-side comparisons of Speechmatics vs Deepgram.

## Why Speechmatics?

Trained on diverse, real-world data to deliver superior accuracy where it matters most.

### Unmatched accuracy

Built for the real world, Speechmatics **delivers unmatched accuracy** in noisy environments, across diverse dialects & accents. The most inclusive STT engine.

- [Real-Time, real benefits](https://speechmatics-website-git-preview-speechmatics.vercel.app/languages)

### Language coverage

**55+ languages. Consistently accurate.** Designed for global products & multilingual customer base to reach every voice with the same world-class quality.

- [Languages](https://speechmatics-website-git-preview-speechmatics.vercel.app/languages)

### Trust & transparency

No data logging by default. **No surprise price hikes**. With superior customer success, transparent terms, and production-grade reliability that scales.

- [Pricing](https://speechmatics-website-git-preview-speechmatics.vercel.app/pricing)

## Limited time offer — Start building with Speechmatics today

Join thousands of developers who've made the switch. Get started with **$200 in free credits** when you sign up with promo code **SWITCH200**

### Start building with Speechmatics today

1) 👤 Log in or signup to [the Speechmatics Portal](https://portal.speechmatics.com/settings/billing/overview)

2) 💳 Add a valid payment card (no charge until credit is used)

3) 🔑 Enter your code: **SWITCH200**

4) 🚀 Start building with $200 free credit

- [Activate my credit](https://portal.speechmatics.com/settings/billing/overview)

- G2 HighPerformer Summer 2024
- G2 HighPerformer Fall 2024
- [G2 Highest Adoption Fall 2024](https://www.g2.com/products/speechmatics/reviews)
- G2 Fall 2025 best users
- [G2 HighPerfomer Spring 2025](https://www.g2.com/products/speechmatics/reviews)
- [G2 HighPerformer Winter 2025](https://www.g2.com/products/speechmatics/reviews)
- [G2 Most likely to recommend Winter 2025](https://www.g2.com/products/speechmatics/reviews)
- G2 Users Love Us

## Feature comparison — Speechmatics vs Deepgram

A comprehensive comparison of features, accuracy, and capabilities.

### Language Support

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Supported Languages | 55+ languages | 30+ languages |
| Multilingual Accuracy | Industry-leading across all languages | Varies by language |
|  |  |  |

### Accuracy & Quality

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Average WER (lower is better) | 6.8% | 16.5% |
| Noisy Environment Performance | Excellent | Standard |
| Accent Recognition | Market-leading | Standard |
|  |  |  |

### Advanced Features

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Speaker Diarization | Yes No extra charge | Extra charge |
| Multi-speaker Accuracy | Market-leading | Standard |
| Custom Dictionary | Yes No extra charge | Extra charge |
| Custom Dictionary Word Count | 1000 words | 100 words only |
|  |  |  |

### Integration & Deployment

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Real-time Streaming | Yes | Yes |
| Batch Processing | Yes | Yes |
| SaaS Deployment | Yes | Yes |
| On-Premise Deployment | Yes | Yes |
| On-Device Deployment | Yes | No |
| Air Gapped | Yes | No |
|  |  |  |

### Public Reviews

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| G2 Rating | 4.8 out of 5 | 4.6 out of 5 |
| Capterra | 4.5 out of 5 | Not applicable |
| Tech Radar | 4.8 out of 5 | Not applicable |
|  |  |  |

## Resources for AI Voice Agents

### Voice Agents — Vapi and Speechmatics: Build agents that understand every voice

- [Vapi and Speechmatics build better agents](https://www.speechmatics.com/company/articles-and-news/vapi-and-speechmatics-build-agents-that-understand-every-voice)

Ship Voice AI agents that stay readable in real time, even in noisy, multi-speaker calls.

- Speechmatics — Editorial Team

### Voice Agents — Introducing real-time, speaker-aware Voice Agents with LiveKit + Speechmatics

- [Introducing real-time, speaker-aware Voice Agents with LiveKit + Speechmatics](https://www.speechmatics.com/company/articles-and-news/build-ai-agents-that-understand-who-said-what-livekit)

Speechmatics brings speaker diarization to LiveKit agents - enabling them to understand not just _what_ was said, but _who_ said it.

- Anthony Perera — Product Marketing Manager

### Voice Agents — Pipecat and Speechmatics: Building Voice Agents that know exactly ‘Who’ said ‘What’

- [Pipecat and Speechmatics: Building Voice Agents that know exactly 'Who' said 'What'](https://www.speechmatics.com/company/articles-and-news/pipecat-and-speechmatics-building-voice-agents-that-know-exactly-who-said-what)

Build smarter voice agents on Pipecat with Speechmatics speech-to-text, now with powerful speaker diarization for real-world, multi-speaker conversations.

- Speechmatics — Editorial Team

### AI Agent Builder — How to build a conversational agent in less time than Cupid’s arrow takes to strike

- [Eros blog](https://www.speechmatics.com/company/articles-and-news/how-to-build-a-conversational-agent-in-less-time-than-cupids-arrow-takes-to-strike)

What happens when you set out to build a fully functioning AI love guru with very little turnaround time?  Let's find out...

- Farah Gouda — Data Engineer

## Why switch from Deepgram?

**Real-Time ASR | Enterprise Differentiation | Competitive Positioning**

### Superior real-time accuracy

Consistently outperforms Deepgram in **low-latency** transcription, especially for **non-English languages** and **challenging accents**.

### Broader language support

**55+ languages** vs. Deepgram’s 34; single model for all languages accents and dialects - covering over half the world's population.

### Enterprise-grade security

**ISO 27001, GDPR, HIPAA-compliant**, **SaaS, on-prem, private cloud** options (vs. Deepgram’s cloud-first approach).

### Custom Dictionary

Instant terminology tuning **without retraining**, unlike Deepgram’s domain-specific models which is complex and requires huge amounts of data.

### Flexible pricing

**Negotiable enterprise pricing** and volume discounts; Deepgram appears cheaper but has hidden costs for premium features.

### More than just speech-to-text

Use Speechmatic’s Voice AI stack to **build powerful, fast, open-source AI Voice Agents** with incredible low latency and seamless interactions.

## **Ready to switch to superior speech-to-text?**

Join thousands of developers building the future of voice with Speechmatics. 
Get $200 in free credits when you sign up today.

- [Get Started](https://portal.speechmatics.com/signup/)
- [Contact Sales](https://speechmatics-website-git-preview-speechmatics.vercel.app/speak-to-sales)