# Deepgram Alternative: Better Accuracy, 56+ Languages, Lower Cost | Speechmatics

Source: https://www.speechmatics.com/how-we-compare/deepgram-alternative

Switch from Deepgram to Speechmatics — industry-leading accuracy, 56+ languages, speaker diarization at no extra cost, and pricing from $0.24/hr vs Deepgram's $0.46/hr. Try free.

## Speechmatics vs Deepgram: Which Speech-to-Text API Delivers?

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

- [Get $200 Free Credit](https://www.speechmatics.com#switch200)
- [Contact Sales](https://www.speechmatics.com/speak-to-sales)

Speechmatics named G2 Leader in 2026

- [G2 Easiest to Use – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Best Support – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Easiest to Use Small Business – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Transcription Leader EMEA – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Transcription Leader Europe – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Transcription Leader – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 Users Most Likely to Recommend – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 High Performer EMEA – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 High Performer – Summer 2026](https://www.g2.com/products/speechmatics/reviews)
- [G2 High Performer Europe – Summer 2026](https://www.g2.com/products/speechmatics/reviews)

## See how Speechmatics compares vs Deepgram on your audio

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

## Why Speechmatics — Why teams evaluate Speechmatics after trying Deepgram

### Accuracy — Fewer errors, across every accent

Speechmatics scores 90% for accuracy in noisy settings on G2 Spring 2026. Trained on real-world audio across diverse dialects and challenging environments.

- [Daily Pipecat benchmark](https://www.daily.co/blog/benchmarking-stt-for-voice-agents/)

### Languages — 56+ languages, one model

Deepgram supports 36+ languages with strong coverage primarily for English. Speechmatics covers [56+ languages](/languages) with a single model handling all accents and dialects, scoring 91% for multilingual voice recognition on G2 Spring 2026.

- [Languages](https://www.speechmatics.com/languages)

### Reliability — G2's top-rated support for voice recognition

Speechmatics holds G2's “Best Support” badge for Voice Recognition. No data logging by default, no surprise price hikes, transparent enterprise terms, and a customer success team that G2 reviewers rate at 91% satisfaction.

- [Enterprise](https://www.speechmatics.com/enterprise)

## Feature comparison — Speechmatics vs Deepgram: A detailed comparison

A comprehensive comparison of features, accuracy, and capabilities.

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Supported Languages | [56+ languages](https://docs.speechmatics.com/speech-to-text/languages) | 36+ (expanding) |
| Flagship Model | [Ursa 2](https://www.speechmatics.com/company/articles-and-news/ursa-2-elevating-speech-recognition-across-52-languages) (1M+ hours training data) | Nova-3 |
| WER (English-only) | 1.07% WER | 1.62% WER |
| Real-Time Transcription | Yes | Yes |
| Batch Transcription | Yes | Yes |
| Cloud Deployment | Yes | Yes |
| [On-Premises Deployment](https://docs.speechmatics.com/deployments) | Yes | Limited |
| On-Device Deployment | Yes | No |
| Air Gapped | Yes | No |
| [ISO 27001 Certified](https://www.speechmatics.com/security) | Yes | No |
| SOC2 Type II | Yes | Yes (Type I and II) |
| HIPAA Compliant | Yes | Yes |
| GDPR Compliant | Yes | Yes (EU endpoint available) |
| Accent Coverage | Industry-leading across 56+ languages | Strong for English only; expanding globally |
| Pricing | From $0.129/hr (Melia) | From $0.46hr (Nova-3) |
|  |  |  |

### Advanced Features

| **Feature** | **Speechmatics ⭐** | **Deepgram** |
| --- | --- | --- |
| Speaker Diarization | Yes No extra charge | Extra charge |
| Multi-speaker Accuracy | Market-leading | Standard |
| [Custom Dictionary](https://docs.speechmatics.com/speech-to-text/features/feature-discovery) | Yes No extra charge | Extra charge |
| Custom Dictionary Word Count | 1000 words | 100 words only |
|  |  |  |

### G2 Spring 2026: head-to-head scores

| **Metric** | Speechmatics ⭐ | Deepgram |
| --- | --- | --- |
| Overall G2 rating | 4.8 / 5 | 4.6 / 5 |
| Quality of support | 91% | 88% |
| Ease of use | 94% | 91% |
| Likelihood to recommend | 96% | 92% |
| Low-latency processing | 93% | 86% |
| Multilingual voice recognition | 91% | 79% |
| Accuracy in noisy settings | 90% | 83% |
| Regulatory compliance | 95% | 88% |

[Source: G2 Comparison Report Spring 2026 – Speechmatics vs Deepgram](https://www.g2.com/compare_reports/speechmatics-and-deepgram-spring-2026.embed?featured=speechmatics&secure%5Bgated_consumer%5D=8f1525f8-c7c0-44b7-8b8d-6837cd3cf45b&secure%5Btoken%5D=243b00364ae2a1fee60057467ad828afc7283a0a762b769dd7357d5d8d28db60&utm_campaign=gate-2238969)

### 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 |
|  |  |  |

## Where Speechmatics outperforms Deepgram

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

### Rated top for low-latency processing on G2

Speechmatics scores 93% for low-latency processing on G2 Spring 2026. In independent benchmarks from [Daily (Pipecat)](https://www.daily.co/blog/benchmarking-stt-for-voice-agents/) across real-time voice agent deployments, Speechmatics ranks among the top providers for accuracy at low latency.

### Production-ready in 56+ languages

One model handles [every language, accent, and dialect](/languages) Speechmatics supports. Deepgram's coverage is strongest for English; for global deployments, the gap shows up in production.

### Enterprise-grade security, no compromise

ISO 27001 certified, GDPR, HIPAA, and SOC2 Type II compliant, with cloud, [on-premises](/product/features-and-deployments), on-device, and [air-gapped](/enterprise) deployment options. Speechmatics scores 95% for regulatory compliance on G2. Deepgram is primarily cloud-first with limited on-premises options.

### Real-time speaker diarization, included

Speechmatics identifies who said what in real time, at no extra charge. Deepgram charges additionally for [speaker diarization](https://docs.speechmatics.com/speech-to-text/features/diarization). For [contact centers](/use-cases/contact-center-solutions), meeting tools, and voice agents, that cost adds up at scale.

### Custom dictionary, no retraining required

Terminology tuning with up to 1,000 words, at no extra charge, with no retraining required. Deepgram caps custom dictionaries at 100 words, charges additionally, and requires large amounts of training data to set up domain-specific models.

### $0.129/hr (Melia batch) vs Deepgram Nova-3 at $0.46/hr

Speaker diarization and custom vocabulary are included in that price. For batch workloads, [Melia](/company/articles-and-news/introducing-melia-multilingual-speech-to-text-model) starts from $0.129/hr. Deepgram Nova-3 may look cheaper upfront, but the features most production deployments need are add-ons.

## Limited time offer

### 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)

## Frequently Asked Questions: Speechmatics vs Deepgram

### Is Speechmatics more accurate than Deepgram?

Yes. Speechmatics achieves a 1.07% [word error rate](/company/articles-and-news/the-problem-with-word-error-rate-wer) for English vs Deepgram's 1.62%, and scores 90% for accuracy in noisy settings on G2 Spring 2026. In independent benchmarks from [Daily (Pipecat)](https://www.daily.co/blog/benchmarking-stt-for-voice-agents/) covering real-time voice agent deployments, Speechmatics ranks among the top providers for accuracy and latency combined.

### How many languages does Speechmatics support vs Deepgram?

Speechmatics supports [56+ languages](https://www.speechmatics.com/languages) with a single model covering all languages, accents, and dialects. Deepgram supports 36+ languages, with strong coverage primarily for English.

### Can Speechmatics be deployed on-premises?

Yes — Speechmatics supports cloud, [on-premises](https://docs.speechmatics.com/deployments), [on-device](https://www.speechmatics.com/speech-to-text/on-device), and air-gapped deployments. Deepgram is primarily cloud-first with limited on-premises options.

### Does Speechmatics offer real-time speaker diarization?

Yes, and it's included at no extra charge. Speechmatics identifies individual speakers in real time across cloud, on-premises, and on-device deployments. Deepgram charges additionally for [speaker diarization](https://docs.speechmatics.com/speech-to-text/features/diarization). For [contact centers](/use-cases/contact-center-solutions), [meeting platforms](/use-cases/meeting-platforms), and [voice agents](/use-cases/ai-voice-agents), where knowing who said what is part of the product, this difference has a direct effect on cost at scale.

### Which is cheaper — Speechmatics or Deepgram?

Speechmatics Standard starts from [$0.24/hr](/pricing), with Melia (batch) from $0.129/hr. Deepgram Nova-3 starts from $0.46/hr, and that excludes speaker diarization and custom vocabulary, which Speechmatics includes at no extra cost. The gap widens at production volume.

### How does custom vocabulary work in Speechmatics vs Deepgram?

Speechmatics allows instant terminology tuning via a [custom dictionary](https://docs.speechmatics.com/speech-to-text/features/feature-discovery) of up to 1,000 words at no extra charge. Deepgram limits custom dictionaries to 100 words and charges additionally, with domain-specific models that are complex to set up and require large amounts of training data.

### How does Speechmatics compare to Deepgram on G2?

Speechmatics holds a higher overall G2 rating (4.8 vs 4.6) and outscores Deepgram on support quality, ease of use, multilingual voice recognition, low-latency processing, and regulatory compliance in the [Spring 2026 report](https://www.g2.com/compare_reports/speechmatics-and-deepgram-spring-2026.embed?featured=speechmatics&secure%5Bgated_consumer%5D=8f1525f8-c7c0-44b7-8b8d-6837cd3cf45b&secure%5Btoken%5D=243b00364ae2a1fee60057467ad828afc7283a0a762b769dd7357d5d8d28db60&utm_campaign=gate-2238969). Speechmatics also holds G2’s “Best Support” and “Easiest to Use” badges for Voice Recognition, which Deepgram does not hold in either category.

### Is Speechmatics HIPAA compliant?

Yes, Speechmatics is HIPAA compliant, and also boasts [ISO 27001](https://www.speechmatics.com/security) certification, SOC2 Type I and II, and GDPR compliance (with an EU endpoint available).

### Can I switch from Deepgram to Speechmatics easily?

Yes — the [Speechmatics Academy migration guide](https://github.com/speechmatics/speechmatics-academy/tree/main/guides/migration-guides/deepgram) covers feature mapping, code examples, and a migration checklist for both real-time and batch. You are also entitled to $200 in free credits with the code SWITCH200, as well as superior customer success support.

### Does Speechmatics have a specialist medical model?

Yes. Speechmatics includes a dedicated [Medical Model](https://www.speechmatics.com/use-cases/medical-transcription) purpose-built for clinical documentation — trained on SNOMED CT terminology, FDA/MHRA drug names, and real clinical audio. It delivers up to 50% fewer critical errors compared to general models, with 96% medical term recall, available for real-time transcription across English, French, German, Spanish, Danish, and Norwegian. Deepgram has no equivalent dedicated medical speech model. See the [Medical Model launch announcement](https://www.speechmatics.com/company/articles-and-news/speechmatics-launches-medical-model-for-real-time-clinical-transcription) and the [Humetrix case study](https://www.speechmatics.com/product/case-studies/humetrix-multilingual-medical-transcription) — where Speechmatics replaced Whisper for multilingual clinical transcription across 27 languages at the Paris 2024 Olympics.

### What is Melia — Speechmatics’ multilingual model?

[Melia](https://www.speechmatics.com/company/articles-and-news/introducing-melia-multilingual-speech-to-text-model) is Speechmatics’ new multilingual speech-to-text model with native code-switching across all 56+ supported languages in a single pass — no per-language model selection needed. It outperforms Deepgram, Microsoft, and AssemblyAI on most FLEURS language benchmarks, making it the strongest option for multilingual content, accented speakers, and global deployments. Priced from $0.129/hr for batch (10 hrs/month free), it’s also the most affordable model in the Speechmatics range. Deepgram’s Nova-3 doesn’t support native cross-language code-switching.

## **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://www.speechmatics.com/speak-to-sales)

## 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