Gladia vs Deepgram

Deepgram transcribes. Gladia gets it right.

Real customer calls, accents, overlapping speakers, languages switching mid-sentence. That’s where Gladia beats Deepgram.

Trusted by over 300,000 users and 2,000+ enterprise teams
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Why teams switch

Built for the audio your product actually has to handle

Right on the calls that matter

Deepgram boasts numbers that come from clean, scripted audio. Solaria was built for what real customer calls actually sound like: accents, background noise, crosstalk.

  • Switchboard
  • 31.9% better WER
  • Real conversations

WER on real conversations

0%
0%

Knows who said what

Overlapping speakers are where transcriptions quietly fall apart. A wrong attribution corrupts everything downstream. Gladia's diarization is more reliable than Deepgram.

  • DIHARD III
  • 2.8× lower DER
  • Overlapping speech

Diarization error rate

0%
0%

Doesn’t break when the conversation does

Real conversations switch languages mid-sentence. Every one of Gladia's supported languages handles that live, with translation included. No separate pipeline, no dropped session.

  • 100+ languages
  • Code-switching
  • Translation included

Languages with live code-switching

0+
0+

From transcript to structured data, in one call

Summaries, sentiment, entities, translation, and LLM-ready output come back in the same API call with your choice of 700+ models. Deepgram has no single-API equivalent.

  • 400+ models
  • Audio-to-LLM
  • One call

Models via Audio-to-LLM

400+
None
Benchmarks

The numbers that matter

Every claim on this page comes from Gladia's open benchmark suite, tested on real conversational datasets, not just clean demo audio.

Conversational speech

Spontaneous telephone conversations. WER % – lower is better.

Diarization

Weighted avg. Diarization Error Rate across 10 domains – lower is better.

Real customer calls

Gladia’s internal production dataset, human-annotated. WER % – lower is better.

Financial calls

Corporate earnings calls, curated by Artificial Analysis. WER % – lower is better.

Language coverage

Real-time code-switching and translation, not just transcription.

Audio intelligence

Raw audio to structured, LLM-ready output in the same API call.

Infrastructure

Built as infrastructure, not an add-on

One API, full pipeline

Record, transcribe, and enrich in a single call. No separate capture provider, no enrichment layer to build and maintain — replaces 2–3 separate vendors in a typical stack.

Infrastructure that holds under pressure

99.9%+ uptime. Thousands of parallel calls spin up in seconds — no pre-provisioning, no capacity forecasting, no backup APIs. When your product scales, Gladia scales with it.

EU-first data sovereignty

Gladia is a French company, subject to GDPR and EU jurisdiction by default, not as a configured add-on. Deepgram is US-based; its EU endpoint provides regional routing, not full data sovereignty. At Gladia, audio is never used to retrain models.

SOC 2 Type II, HIPAA, GDPR, ISO 27001, ISO 27701, HDS

Support that feels personal

A named contact and fast technical response from engineers who know your setup – not a ticket queue.

What we’ve heard from teams
migrating off Deepgram

Dozens of teams have shared their Deepgram migration stories with us. Anonymized for privacy, their feedback surfaces consistent, real-world pain points worth considering.

Poor multilingual & code-switching support

“The issue with Deepgram is they don't really have solid multilingual or auto code-switching support.”

Language detection inconsistencies

“Sometimes Deepgram tagged English calls as Hindi (70% of the time).”

Accent & entity recognition issues

“Accents throw it off completely.”

Accent & entity recognition issues

“When users spell names or emails, for example firstname.lastname@gmail.com, it just can't handle it.”

Concurrency & flexibility limits

“We quickly hit a limit when spelling names or numbers. The model just started outputting random words.”

Support & onboarding friction

“They're not easy to work with. The process feels rigid, and they push big commitments upfront.”

Accent & entity recognition issues

“Their name and email recognition just wasn't great.”

Reliability challenges

“If you lock the language, it won't transcribe anything else. If you try multi-mode, it only does English and Spanish. Language detection only works on clips, not live audio. It's frustrating.”

Support & onboarding friction

“It took months to implement. We sent thousands of emails trying to fix issues. We were just done.”

Don’t just switch. Upgrade.

Teams that migrate from Deepgram see fewer misfires on accents and entities, transcripts that don't break mid-conversation, and support that answers before it becomes a ticket.

Library

Related Resources

Benchmarks

See STT performance against 8 leading providers

Open methodology across Switchboard, DIHARD III, and real customer calls — not just clean demo audio.

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Comparison

Deepgram vs Gladia: Best STT API compared

Accuracy, latency, multilingual coverage, and pricing — side by side.

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Pricing

Deepgram pricing: worth it?

What Nova-3 costs on the base rate — and what diarization, redaction, and Audio Intelligence add on top.

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FAQs