AssemblyAI vs Groq
Best-in-class speech-to-text API — Universal models, 99 languages, low-latency streaming
vs. Fastest LLM inference — LPU-powered (300-1000+ tokens/sec)
Pricing tiers
AssemblyAI
Free Credits
$50 in free credits on signup. Full API access.
Free
Pay-as-you-go
Per-hour billing by model. No minimum.
$0 base (usage-based)
Enterprise
Custom contracts. SLA, private deployments, BAA.
Custom
Groq
Free Tier
Generous free RPM / TPM by model. Great for dev + small apps.
Free
On-Demand (paid)
Pay-as-you-go per token. OpenAI-compatible API, no infrastructure to manage.
$0 base (usage-based)
Developer Tier
Higher rate limits for production apps.
$0 base (usage-based)
Enterprise
Custom. Dedicated capacity, SLA, on-prem option.
Custom
Free-tier quotas head-to-head
Comparing free-trial on AssemblyAI vs free-tier on Groq.
| Metric | AssemblyAI | Groq |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
AssemblyAI · 11 features
- Advanced Prompting — Streaming with disfluency + code-switching + realtime diarization.
- Audio Intelligence — Sentiment, topic detection, summarization, entity detection, content safety, IAB…
- Auto Punctuation — Smart capitalization + punctuation.
- Keyterm Prompting — Boost accuracy for domain vocabulary.
- LeMUR (LLM framework) — Run LLMs over transcripts: Q&A, summary, action items.
- Medical Mode — Specialized for clinical + medical vocabulary.
- PII Redaction — Auto-redact credit cards, SSNs, addresses, emails.
- Pre-recorded Transcription — Upload audio/video URL or file → transcript.
- Realtime Streaming — WebSocket-based low-latency STT.
- Speaker Diarization — Identify who spoke when.
- Webhooks — Auto-notify when transcription finishes.
Groq · 7 features
- Audio Transcription — Whisper endpoint.
- Batch API — 50% discount.
- Chat Completions (OpenAI-compat) — Standard /v1/chat/completions endpoint.
- Function Calling
- JSON Mode — Enforce JSON output format.
- Prompt Caching — 50% discount on cached input.
- Streaming — SSE streaming for chat.
Developer interfaces
| Kind | AssemblyAI | Groq |
|---|---|---|
| SDK | assemblyai-go, assemblyai (Node), assemblyai (Python), assemblyai (Ruby) | groq-python, groq-sdk (Node) |
| REST | AssemblyAI REST API | Groq API (OpenAI-compat) |
| OTHER | Streaming WebSocket, Webhooks | — |
Staxly is an independent catalog of developer platforms. Outbound links to AssemblyAI and Groq are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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