Head to head
Deepgram vs Gladia
As a speech-to-text API, Deepgram rates higher on the APIbenchmarks Index, 87.5 to 74, a 13.5-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Deepgram | Gladia |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 87.5 | 74.0 |
Specifications
| Deepgram | Gladia | |
|---|---|---|
| Best for | Real-time streaming STT for voice agents | All-inclusive STT for voice products |
| Free tier | $200 credit, no card | 10 hrs/mo |
| Pricing | Per minute (usage-based) | Per hour (usage-based) |
| Official SDKs | 9 languages | 6 languages |
Is Deepgram better than Gladia?
On the APIbenchmarks Index, Deepgram rates higher (87.5 vs 74). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
Deepgram leads by 13.5 points (87.5 vs 74) and wins 4 of 4 criteria.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 90 | 78 | |
| Reliability | 84 | 70 | |
| Ecosystem & SDKs | 82 | 62 | |
| Accessibility | 95 | 88 |
Choose Deepgram if… / choose Gladia if…
- →documentation & dx matters most to you (90 vs 78)
- →reliability matters most to you (84 vs 70)
- →ecosystem & sdks matters most to you (82 vs 62)
- →accessibility matters most to you (95 vs 88)
- →you need broad SDK coverage (9 official SDKs vs 6)
- →your use case matches its focus: real-time streaming stt for voice agents
- →your use case matches its focus: all-inclusive stt for voice products
Pricing side by side
- Model
- Per minute (usage-based)
- Free tier
- $200 credit, no card
- Pay As You Go$0.0077/hr pre-recorded; $0.0048/min streaming (Nova-3 monolingual)
- Growth$0.0065/hr pre-recorded; $0.0042/min streaming (Nova-3 monolingual)
- EnterpriseCustom
- Aura-2 Text-to-Speech$0.030 / 1,000 chars (PAYG); $0.027 (Growth)
- Voice Agent APIFrom $0.075/min (PAYG); $0.068/min (Growth)
- Model
- Per hour (usage-based)
- Free tier
- 10 hrs/mo
- Free$0 (10 hrs/month)
- Starter (Pay-as-you-go)$0.61/hr async, $0.75/hr real-time
- Growth (Commitment)from $0.20/hr async, $0.25/hr real-time
- EnterpriseCustom (annual)
Vendor-published pricing, verified 2026-06-27 (Deepgram) and 2026-06-27 (Gladia).
SDK and language coverage
Both · 2
Python (pip install deepgram-sdk)REST API
Only Deepgram · 7
JavaScript / TypeScript (@deepgram/sdk)Go (deepgram-go-sdk).NET / C# (Deepgram NuGet)Java (com.deepgram:deepgram-java-sdk)Rust (community SDK)CLI toolWebSocket streaming API
Only Gladia · 4
Node.js / JavaScript (official SDK)WebSocket streaming reference clientsGladiaPy (community Python client)AWS Marketplace listing
Strengths and weaknesses
- +Very low streaming latency (sub-300ms), making it well-suited to real-time voice agents and live captioning
- +Among the cheapest per-hour STT pricing at scale ($0.0065-$0.0077/hr for Nova-3), with per-second billing (no minute rounding)
- +Clean, developer-friendly API with official SDKs and consistently praised documentation
- –Real-world accuracy on third-party benchmarks (Artificial Analysis ~18% WER) is far worse than vendor-claimed 5.26%, so headline numbers overstate hard-audio performance
- –Struggles relative to competitors on strong accents, overlapping speech, and noisy multi-speaker audio
- –Language support is narrower/less accurate for less-common and non-English languages
- +Audio-intelligence features (diarization, translation, sentiment, PII redaction, language detection) are bundled into the base per-hour price rather than billed as separate add-ons
- +Strong, third-party-dataset accuracy on Solaria-3: 6.4% WER on Earnings22 business audio, beating AssemblyAI, ElevenLabs, Speechmatics, and Deepgram
- +Very competitive pricing with a real 10-hour/month free tier and committed rates as low as ~$0.20/hr async
- –Most published accuracy/latency benchmarks are vendor-run by Gladia itself, with limited fully independent third-party validation
- –Smaller ecosystem and community than US incumbents (fewer official SDKs, less third-party tooling and review volume)
- –No public status-page uptime figures; reliability rests on contractual SLAs rather than transparent metrics
Deepgram vs Gladia: questions
- Which has better documentation, Deepgram or Gladia?
- Deepgram scores higher on documentation and developer experience: 90 vs 78 out of 100.
- Which is more reliable, Deepgram or Gladia?
- Deepgram scores higher on reliability: 84 vs 70 out of 100.
- Do Deepgram and Gladia have a free tier?
- Deepgram: yes ($200 credit, no card). Gladia: yes (10 hrs/mo).
- How are Deepgram and Gladia priced?
- Deepgram: Per minute (usage-based). Gladia: Per hour (usage-based).
- Which has more official SDKs?
- Deepgram lists 9 official SDKs, Gladia lists 6.