Gladia

Best for: Prototypes and side projects - free to start, no sales call; Regulated or enterprise workloads - compliance attestations and an enterprise plan; AI agents and automation - an agent-ready surface (MCP / llms.txt)

Pricing model

Usage-based [2]gladia.io/pricing“Starter: Async $0.61/hour, Real-time $0.75/hour. Pay-as-you-go model with no mandatory recurring base fee. Growth: Commit upfront to unlock savings — as low as $0.20/hr async.”gladia.io/pricing“No setup fees or hidden costs. No flat monthly fees mentioned for any tier; Growth plan is a committed-spend volume discount, not a flat subscription.”

Published pricing

✓ Yes [3]gladia.io/pricing“Async: $0.61/hour, Real-time: $0.75/hour ... Growth: as low as $0.20/hr async, $0.25/hr real-time”

Free tier

✓ Yes [4]gladia.io/pricing“10h free monthly”docs.gladia.io/chapters/limits-and-specifications/concurrency“Free tier usage: Limited to 10 Hours monthly”

Free tier details

10 hours free monthly on the Starter (Pay-as-you-go) plan; no credit card required; free plan limited to 3 concurrent async transcriptions and 1 live session

Self-serve signup

✓ Yes [5]gladia.io/pricing“Starter (Pay-as-you-go) ... Self-serve: Yes, get started immediately”

Requires sales call

✗ No

Enterprise plan

✓ Yes [6]gladia.io/pricing“Enterprise ... Unlimited concurrent requests, default model training opt-out, zero data retention, SLAs, premium support with dedicated Slack and Account Manager, custom hosting, limitless scaling”

• Real-time streaming
• Speaker diarization
• Speech translation
• PII redaction

Supported actions

transcribe_batch, transcribe_streaming, speaker_diarization, language_detection, code_switching, word_timestamps, translation, summarization, chapterization, sentiment_analysis, emotion_analysis, named_entity_recognition, pii_redaction, subtitle_generation_srt, subtitle_generation_vtt, custom_vocabulary, audio_to_llm_prompting, file_upload, url_input, webhook_callbacks, job_status_polling [7]docs.gladia.io/llms.txt“Summarization, chapterization, translation, Named Entity Recognition and sentiment/emotion analysis, Speaker diarization, PII redaction, Custom vocabulary, Subtitle generation (SRT/VTT formats), Audio-to-LLM prompting”

Regions

EU (France, default), US [8]gladia.io/compliance-hub“EU and US workloads hosted on separate, region-specific infrastructure”gladia.io/security“Default European provider (France) for GDPR compliance”

Languages

Afrikaans, Albanian, Amharic, Arabic, Armenian, Assamese, Azerbaijani, Bashkir, Basque, Belarusian, Bengali, Bosnian, Breton, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Estonian, Faroese, Finnish, French, Galician, Georgian, German, Greek, Gujarati, Haitian Creole, Hausa, Hawaiian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Javanese, Kannada, Kazakh, Khmer, Korean, Lao, Latin, Latvian, Lingala, Lithuanian, Luxembourgish, Macedonian, Malagasy, Malay, Malayalam, Maltese, Maori, Marathi, Mongolian, Myanmar, Nepali, Norwegian, Nynorsk, Occitan, Pashto, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Sanskrit, Serbian, Shona, Sindhi, Sinhala, Slovak, Slovenian, Somali, Spanish, Sundanese, Swahili, Swedish, Tagalog, Tajik, Tamil, Tatar, Telugu, Thai, Tibetan, Turkish, Turkmen, Ukrainian, Urdu, Uzbek, Vietnamese, Welsh, Wolof, Yiddish, Yoruba, 139 languages total per vendor docs (enumeration above shows the core 100; full list at docs.gladia.io/chapters/limits-and-specifications/languages) [9]docs.gladia.io/chapters/limits-and-specifications/languages“139 languages supported for transcription, all using ISO 639-1 codes (or ISO 639-3 for languages without 639-1 codes). Wolof is the only language without auto-discovery and code-switch support.”

Input types

audio/aac, audio/ac3, audio/eac3, audio/flac, audio/m4a, audio/mp2, audio/mp3, audio/ogg, audio/opus, audio/wav, video/3g2, video/3gp, video/avi, video/flv, video/m4v, video/mkv, video/mov, video/mp4, video/wmv, file upload, file URL, live WebSocket stream, online video service URL (TikTok, Instagram, Facebook, Vimeo, Dailymotion, LinkedIn) [10]docs.gladia.io/chapters/limits-and-specifications/pages/supported-formats“AAC, AC3, EAC3, FLAC, M4A, MP2, MP3, OGG, Opus, and WAV are supported audio formats ... 3G2, 3GP, AVI, FLV, M4V, Matroska, MOV, MP4, and WMV video formats are supported”

Output types

JSON, SRT subtitles, VTT subtitles, word timestamps, speaker-labeled transcripts, summaries, chapters, named entities, sentiment scores, translated text

Webhooks

✓ Yes [11]docs.gladia.io/llms.txt“Webhook callbacks for creation, success, and error states ... Live Transcription (Real-time): Webhook support for async notifications”

Sandbox / test mode

✗ No [12]gladia.io/pricing“Starter (Pay-as-you-go) with free tier operates in the live production environment; no separate sandbox or test-mode keys are offered.”

SDK languages

TypeScript/JavaScript, Python [13]docs.gladia.io/chapters/integrations/sdk“TypeScript/JavaScript - Available via npm package @gladiaio/sdk ... Python - Available via PyPI package gladiaio-sdk”

MCP server

✓ Yes [14]github.com/gladiaio/mcp-gladia“MCP server for Gladia audio transcription and intelligence ... published under the gladiaio GitHub organization”

SOC 2

SOC 2 Type II [15]gladia.io/compliance-hub“AICPA SOC Type 2”gladia.io/security“Gladia has achieved SOC 2 Type 1 and Type 2 compliance”

HIPAA

✓ Yes [16]gladia.io/security“HIPAA Compliant (listed in footer badge)”gladia.io/compliance-hub“HIPAA Compliant ... Business Associate Agreements (BAA) for healthcare applications”

GDPR

✓ Yes [17]gladia.io/compliance-hub“GDPR Compliant”gladia.io/security“Gladia is compliant with the General Data Protection Regulation (GDPR)”

ISO 27001

✗ No [18]gladia.io/security“Gladia has achieved SOC 2 Type 1 and Type 2 compliance and is working towards ISO 27001 compliance.”

PCI DSS

✗ No [19]gladia.io/security“Payment processing outsourced to Stripe (PCI Level 1 certified). Gladia handles no payment data directly. We don't collect any payment information and are therefore not subject to PCI obligations.”

Published SLA

✗ No [20]gladia.io/compliance-hub“No specific uptime commitments or service level agreements are documented on this compliance page.”gladia.io/pricing“Enterprise ... SLAs (listed as enterprise-only feature, not a public document)”

Rate limits

Free plan: 10 hours/month, 3 concurrent async transcriptions, 1 concurrent live session. Paid plan: 25 concurrent async transcriptions, 30 concurrent live sessions, queue of up to 300 async requests. Enterprise: on-demand/customizable. Single live session max duration: 3 hours. Pre-recorded max file duration: 135 minutes (Enterprise: 4h15m). Max file size: 1000 MB. [21]docs.gladia.io/chapters/limits-and-specifications/concurrency“Free Tier: Monthly usage 10 Hours, Pre-recorded concurrency: 3, Live concurrency: 1. Paid Tier: Pre-recorded concurrency: 25, Live concurrency: 30, Queue capacity: Up to 300. Live session duration: A single realtime (live) transcription session cannot exceed 3 hours”docs.gladia.io/chapters/limits-and-specifications/pages/supported-formats“The maximum length of audio that can be transcribed in a single request is currently 135 minutes ... Enterprise plans support up to 4 hours 15 minutes. File size limit: 1000 MB”

Known restrictions

Maximum pre-recorded audio duration: 135 minutes per request (up to 4h15m on Enterprise), Maximum file size: 1,000 MB, Real-time WebSocket session limited to 3 hours, Free plan capped at 10 hours/month total usage, Free plan data may be used for model training; paid plans opt out by default, Wolof language does not support automatic language detection/code-switching [22]docs.gladia.io/chapters/limits-and-specifications/pages/supported-formats“The maximum length of audio that can be transcribed in a single request is currently 135 minutes ... Enterprise plans support up to 4 hours 15 minutes for pre-recorded audio”gladia.io/security“Only users in the Free Plan are subject to data used for model training.”

• Docs
• llms.txt
• Changelog
• Status page

Docs rendering: static · llms.txt present

API style

rest

Base URL

https://api.gladia.io

Version

v2

Versioning

url

Stability

ga

Auth methods

api_key

Idempotency keys

✗ No

Error format

vendor-specific

Webhook signing

hmac_sha256

Rate limit

25 / concurrent

SDKs

• TypeScript/JavaScript @gladiaio/sdk · repo
• Python gladiaio-sdk · repo

• Auth docs
• Quickstart
• MCP server
• Webhook events
• Deprecation policy

Launched

2022-01-01

GA

2023-06-01

Notable customers

Aircall, Attention, Recall, VEED, Mojo, Livestorm, Daily, Carv, Citibank, Samsung, Oracle, Microsoft, SoftBank

• ElevenLabs Scribe (Speech to Text)

  "Scribe v2 is the most accurate Speech to Text model" offering "real-time Speech to Text in under 150 ms" across "90+ languages."

  Hybrid · free tier · public pricing · self-serve

• Azure AI Speech to Text

  "Azure Speech in Foundry Tools provides speech to text, text to speech, and other capabilities through a Microsoft Foundry resource. You can transcribe speech to text with high accuracy, produce natural-sounding text-to-speech voices, translate spoken audio, and conduct live AI voice conversations."

  Usage · free tier · public pricing · self-serve

• Amazon Transcribe

  "Amazon Transcribe is an automatic speech recognition service that uses machine learning models to convert audio to text. You can use Amazon Transcribe as a standalone transcription service or to add speech-to-text capabilities to any application."

  Usage · free tier · public pricing · self-serve

• Google Cloud Speech-to-Text

  "Accurate voice typing and transcription powered by Gemini."

  Usage · free tier · public pricing · self-serve

• IBM watsonx Speech to Text

  "IBM Watson® Speech to Text technology enables fast and accurate speech transcription in multiple languages for a variety of use cases, including but not limited to customer self-service, agent assistance and speech analytics."

  Usage · free tier · public pricing · self-serve

• AssemblyAI

  "Voice AI infrastructure for developers building products that transcribe, understand, and act on speech."

  Usage · public pricing · self-serve

Gladia alternatives · Gladia vs ElevenLabs Scribe (Speech to Text) · All Speech-to-Text & Transcription APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: gladia.io
2. ↑Pricing model: gladia.io · gladia.io
3. ↑Published pricing: gladia.io
4. ↑Free tier: gladia.io · docs.gladia.io
5. ↑Self-serve signup: gladia.io
6. ↑Enterprise plan: gladia.io
7. ↑Supported actions: docs.gladia.io
8. ↑Regions: gladia.io · gladia.io
9. ↑Languages: docs.gladia.io
10. ↑Input types: docs.gladia.io
11. ↑Webhooks: docs.gladia.io
12. ↑Sandbox: gladia.io
13. ↑SDK languages: docs.gladia.io
14. ↑MCP server: github.com
15. ↑SOC 2: gladia.io · gladia.io
16. ↑HIPAA: gladia.io · gladia.io
17. ↑GDPR: gladia.io · gladia.io
18. ↑ISO 27001: gladia.io
19. ↑PCI DSS: gladia.io
20. ↑Published SLA: gladia.io · gladia.io
21. ↑Rate limits: docs.gladia.io · docs.gladia.io
22. ↑Known restrictions: docs.gladia.io · gladia.io

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-21 Capabilities: {} → {"translation":true,"pii_redaction":true,"real_time_streaming":true,"speaker_di…
2. 2026-06-21 Summary Md: (none) → Gladia is an audio infrastructure API covering batch and real-time speech-to-te…
3. 2026-06-21 Score Pricing Transparency: (none) → 100
4. 2026-06-21 Score Setup Speed: (none) → 80
5. 2026-06-21 Score Docs Quality: (none) → 35
6. 2026-06-21 Score Procurement Friction: (none) → 100
7. 2026-06-21 Score Trust Readiness: (none) → 55
8. 2026-06-21 Best For: (none) → Prototypes and side projects - free to start, no sales call, Regulated or enter…
9. 2026-06-21 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
10. 2026-06-21 Score Agent Friendliness: (none) → 55
11. 2026-06-21 Llms Txt Present: (none) → Yes
12. 2026-06-21 Rendering: (none) → static
13. 2026-06-21 Has Structured Data: (none) → Yes
14. 2026-06-21 Robots Allows Agents: (none) → No
15. 2026-06-21 Status Page URL: (none) → https://status.gladia.io
16. 2026-06-21 Changelog URL: (none) → https://www.gladia.io/changelog
17. 2026-06-21 Docs URL: (none) → https://docs.gladia.io/chapters/introduction
18. 2026-06-21 Llms Txt URL: (none) → https://www.gladia.io/llms.txt
19. 2026-06-21 MCP Server Available: set to Yes
20. 2026-06-21 Pricing Model: set to usage_based
21. 2026-06-21 Has Published Pricing: set to Yes
22. 2026-06-21 Free Tier Available: set to Yes
23. 2026-06-21 Free Tier Details: set to 10 hours free monthly on the Starter (Pay-as-you-go) plan; no credit card requi…
24. 2026-06-21 Self Serve Signup: set to Yes
25. 2026-06-21 Requires Sales Call: set to No
26. 2026-06-21 Enterprise Plan Available: set to Yes
27. 2026-06-21 SOC 2: set to type_2
28. 2026-06-21 HIPAA: set to Yes
29. 2026-06-21 GDPR: set to Yes
30. 2026-06-21 Data Retention Policy URL: set to https://www.gladia.io/security
31. 2026-06-21 Documented Rate Limits: set to Free plan: 10 hours/month, 3 concurrent async transcriptions, 1 concurrent live…
32. 2026-06-21 Rate Limit Requests: set to 25
33. 2026-06-21 Rate Limit Window: set to concurrent
34. 2026-06-21 Known Restrictions: set to Maximum pre-recorded audio duration: 135 minutes per request (up to 4h15m on En…
35. 2026-06-21 Auth Methods: set to api_key
36. 2026-06-21 Auth Docs URL: set to https://docs.gladia.io/api-reference/authentication
37. 2026-06-21 API Style: set to rest
38. 2026-06-21 Base URL: set to https://api.gladia.io
39. 2026-06-21 API Version: set to v2
40. 2026-06-21 Versioning Scheme: set to url
41. 2026-06-21 Stability: set to ga
42. 2026-06-21 Deprecation Policy URL: set to https://docs.gladia.io/chapters/get-started/pages/migration-from-v1
43. 2026-06-21 MCP URL: set to https://github.com/gladiaio/mcp-gladia
44. 2026-06-21 Quickstart URL: set to https://docs.gladia.io/chapters/pre-recorded-stt/quickstart
45. 2026-06-21 Idempotency Supported: set to No
46. 2026-06-21 Error Format: set to vendor-specific
47. 2026-06-21 Webhook Signing: set to hmac_sha256
48. 2026-06-21 Webhook Events URL: set to https://support.gladia.io/article/how-to-set-up-webhooks-for-real-time-notifica…
49. 2026-06-21 SLA Published: set to No
50. 2026-06-21 Starting Price Usd: set to 0.61

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/gladia \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/gladia/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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