# AssemblyAI vs Gladia

AssemblyAI records 453,591 monthly visits with -6.9% month-over-month growth and Freemium, Contact for Pricing pricing. Gladia records 232,451 monthly visits with +6.4% growth and Freemium, Contact for Pricing pricing.

| Metric | [AssemblyAI](https://openaitools.app/tool/assemblyai) | [Gladia](https://openaitools.app/tool/gladia) |
| :--- | :--- | :--- |
| Website URL | https://www.assemblyai.com | https://www.gladia.io |
| Categories | AI Speech-to-Text, AI Transcription, AI Speech Recognition, AI Developer Tools | AI Speech-to-Text, AI API, AI Transcription, Audio To Text AI |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 453,591 | 232,451 |
| MoM Growth Rate | -6.9% | +6.4% |
| Primary Market | Brazil | Brazil |
| Direct Visits | 281,472 | 128,515 |
| Review Score | 4.6 | 4.4 |
| Saved Count | 9 | 6 |
| Supported Platforms | Website | Website |

## AssemblyAI

AssemblyAI builds speech AI models and the infrastructure to run them, aimed at developers and product teams adding voice to an application. Its core offering is speech-to-text: an asynchronous API for pre-recorded audio, a realtime API for streaming and voice agents, and a synchronous API for short clips and dictation. The company's flagship accuracy model is marketed as top of independent benchmarks, with strong speaker diarization and native code-switching across dozens of languages.

On top of transcription, AssemblyAI offers a Speech Understanding API that layers tasks such as summarization, sentiment, topic detection, PII redaction, content moderation and guardrails onto transcripts. It has also released its first text-to-speech model, AssemblyAI-TTS-1, built for voice agents on live calls, plus an LLM Gateway for routing model calls and a Dictation API. Models can run on AssemblyAI's managed inference cloud, or self-hosted in a customer's own VPC or on-premises environment.

Pricing is pay-as-you-go after a free trial: for example, pre-recorded transcription is billed per audio hour, with optional add-ons such as speaker diarization, keyterms prompting and medical or veterinary modes priced separately. Enterprise plans offer custom rate limits, higher concurrency and compliance features including SOC 2 Type 2, HIPAA and GDPR.

**Pricing & Plans:** Free trial to start, then pay-as-you-go per audio hour and per add-on feature — for example around $0.15/hr for the Universal-2 model and around $0.21/hr for the more accurate Universal-3.5 Pro model, with extras like diarization billed individually. Enterprise and custom-rate-limit plans are available via sales.

- **Async, realtime and sync speech-to-text:** Choose pre-recorded transcription for files, a realtime API for live streams and voice agents, or a synchronous endpoint for short clips and dictation.
- **Audio intelligence and Speech Understanding:** Layer summarization, sentiment, topic detection, PII redaction, content moderation and guardrails onto transcripts without building your own models.
- **Text-to-speech for voice agents:** AssemblyAI-TTS-1 is trained on real phone calls for natural, low-latency speech, targeted at IVR and voice-agent use cases.
- **High accuracy with diarization:** Flagship models emphasise exact transcription, speaker labels and native code-switching across many languages, supported by published benchmarks.
- **Flexible deployment:** Run models on AssemblyAI's managed cloud with unlimited concurrency, or self-host in your own VPC or on-prem for full data control.

**Strengths:** One API family covering transcription, understanding and text-to-speech; Transparent per-hour pay-as-you-go pricing with a free trial; Self-hosting option for teams with strict data-residency requirements; Strong accuracy and diarization performance backed by published benchmarks

**Limitations:** Costs scale with volume and add-ons can raise the effective per-hour rate; Some advanced features are model-specific and not available on every model; Heavier product surface than a simple transcription API may be overkill for basic needs

[Profile (Markdown)](https://openaitools.app/tool/assemblyai.md)

## Gladia

Gladia provides the speech-to-text layer underneath voice products rather than a consumer transcription app. Teams capture audio from live streams, uploads, or real-time microphone input via WebSocket streaming or REST, then receive a clean transcript with timestamped segments. The platform reports hundreds of thousands of users and enterprise teams, and claims top accuracy on conversational audio benchmarks along with leading speaker detection powered by pyannoteAI.

On top of transcription, Gladia bundles native audio intelligence features that are billed only when enabled: speaker diarization, automatic language detection across 100+ languages, code-switching for conversations that mix languages, named entity recognition, PII redaction, sentiment analysis, and summarization. An audio-to-LLM pipeline lets you push transcripts into a large language model, either Gladia-hosted or your own (BYOM).

Integration options include Python and Node.js SDKs, webhooks, Zapier, and 50+ native integrations, plus native meeting-bot support for Zoom, Google Meet, and Microsoft Teams. The company emphasizes enterprise readiness with SOC 2 Type II, GDPR, HIPAA, and ISO 27001 compliance, 99.9% uptime SLA, EU and US hosting, and data-training opt-out by default. A playground, changelog, status page, and benchmark tools are available for evaluation.

**Pricing & Plans:** Gladia uses a freemium model: new developers can start with around €50 in transcription credits that do not expire, and add-on features are billed only when switched on. Enterprise and high-volume plans require contacting sales for custom pricing and SLA terms.

- **Real-time and async speech-to-text:** Stream audio over WebSocket for live captioning or submit files via REST for batch transcription, supporting MP3, WAV, FLAC, Opus, and most other formats.
- **Multilingual with code-switching:** Automatic, accent-sensitive language detection across 100+ languages, including code-switching for conversations that move between languages mid-sentence.
- **Native audio intelligence:** Speaker diarization, named entity recognition, PII redaction, sentiment analysis, and summarization, each billed only when you enable it.
- **Audio-to-LLM pipeline:** Feed transcripts directly into a large language model, either Gladia-hosted or a model you bring yourself (BYOM), to generate summaries and structured outputs.
- **Developer tooling and integrations:** Python and Node.js SDKs, webhooks, Zapier, 50+ integrations, plus meeting-bot support for Zoom, Google Meet, and Microsoft Teams.

**Strengths:** Broad language coverage with real-time code-switching, which many STT vendors lack; Audio intelligence features like diarization, sentiment, and PII redaction are built in rather than chained from multiple providers; Strong compliance posture with SOC 2 Type II, GDPR, HIPAA, and ISO 27001 plus EU hosting; Free starting credits and a public playground make evaluation straightforward

**Limitations:** Developer-focused API product: no simple consumer app for one-off transcription; Enterprise features such as on-premise deployment and some hosting controls are gated behind sales conversations

[Profile (Markdown)](https://openaitools.app/tool/gladia.md)

## Frequently Asked Questions

### How do AssemblyAI and Gladia compare in monthly traffic?

AssemblyAI has 453,591 monthly visits, while Gladia has 232,451. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

AssemblyAI has a month-over-month growth rate of -6.9%; Gladia has +6.4%.

### How does pricing compare?

AssemblyAI: Freemium, Contact for Pricing. Free trial to start, then pay-as-you-go per audio hour and per add-on feature — for example around $0.15/hr for the Universal-2 model and around $0.21/hr for the more accurate Universal-3.5 Pro model, with extras like diarization billed individually. Enterprise and custom-rate-limit plans are available via sales. Gladia: Freemium, Contact for Pricing. Gladia uses a freemium model: new developers can start with around €50 in transcription credits that do not expire, and add-on features are billed only when switched on. Enterprise and high-volume plans require contacting sales for custom pricing and SLA terms.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Provides Whisper via API for robust speech-to-text, but lacks specialized real-time streaming audio intelligence pipelines. | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [Cartesia](https://openaitools.app/tool/cartesia-ai) | 1,782,707 | +49.7% | Contact for Pricing | Specializes in ultra-low latency streaming voice infrastructure, though heavily optimized for voice synthesis. | [.md](https://openaitools.app/tool/cartesia-ai.md) |
| 3 | [Deepgram Voice AI](https://openaitools.app/tool/deepgram-voice-ai) | 863,852 | +31.8% | Free Trial | Provides ultra-fast, enterprise-grade real-time speech-to-text and voice AI APIs, but with different pricing tiers. | [.md](https://openaitools.app/tool/deepgram-voice-ai.md) |
| 4 | [Salad Transcription API](https://openaitools.app/tool/salad-transcription-api) | 713,519 | +10.4% | Free Trial, Paid | Offers cost-effective batch transcription APIs powered by distributed cloud hardware rather than dedicated streaming infrastructure. | [.md](https://openaitools.app/tool/salad-transcription-api.md) |
| 5 | [Vapi](https://openaitools.app/tool/vapi) | 662,301 | -11.4% | Freemium | Specializes in orchestrating complete conversational voice agent pipelines rather than raw standalone transcription APIs. | [.md](https://openaitools.app/tool/vapi.md) |
| 6 | [Soniox](https://openaitools.app/tool/soniox) | 335,647 | +2.2% | Paid | Offers highly accurate real-time speech recognition and translation APIs, but features distinct developer tooling. | [.md](https://openaitools.app/tool/soniox.md) |
| 7 | [Gradium](https://openaitools.app/tool/gradium) | 126,416 | +128.7% | Freemium, Contact for Pricing | Focuses on ultra-low latency real-time voice APIs, though with a smaller ecosystem than Gladia. | [.md](https://openaitools.app/tool/gradium.md) |
| 8 | [Pulse — Speech-to-Text by Smallest AI](https://openaitools.app/tool/pulse-speech-to-text-by-smallest-ai) | 121,245 | +3.5% | Pay as you go (per-minute) with free starter credits and an enterprise plan | Delivers real-time speech-to-text with emotional intelligence detection, though on a newer platform. | [.md](https://openaitools.app/tool/pulse-speech-to-text-by-smallest-ai.md) |
| 9 | [Music.AI](https://openaitools.app/tool/music-ai) | 79,323 | -18.1% | Contact for Pricing | B2B AI audio models for stem separation, transcription, mastering, and voice processing | [.md](https://openaitools.app/tool/music-ai.md) |
| 10 | [Rev AI](https://openaitools.app/tool/rev-ai) | 50,708 | -18.4% | Free Trial, Paid | Provides reliable enterprise speech-to-text and transcription APIs, but lacks some of Gladia's newer real-time audio intelligence models. | [.md](https://openaitools.app/tool/rev-ai.md) |

---
Source: https://openaitools.app/compare/assemblyai-vs-gladia

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)