AssemblyAI vs OpenAI Whisper

AssemblyAI is freemium — a usable free tier with paid plans above it. OpenAI Whisper is free, with no paid plan attached. Both are listed under Speech & Transcription Engines, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.

AssemblyAI vs OpenAI Whisper — straight answers

AssemblyAI vs OpenAI Whisper: what is the difference?

AssemblyAI is freemium — a usable free tier with paid plans above it and is listed for speech-to-text with audio intelligence. OpenAI Whisper is free, with no paid plan attached and is listed for open-source speech-to-text, run locally free. Both sit in Speech & Transcription Engines.

Is AssemblyAI or OpenAI Whisper cheaper to start with?

OpenAI Whisper is the cheaper starting point: it is free, with no paid plan attached, while AssemblyAI is freemium — a usable free tier with paid plans above it. Pricing tiers here come from the catalog, not from a promotional page.

Which should I choose, AssemblyAI or OpenAI Whisper?

Choose AssemblyAI if you need speech-to-text with audio intelligence; choose OpenAI Whisper if you need open-source speech-to-text, run locally free. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.

AssemblyAI compared with OpenAI Whisper: pricing tier, category, listed capabilities and links.
 AssemblyAIOpenAI Whisper
Pricing tierFree tier + paid plansFree
Free to startYesYes
CategoryAI Models & Local ExecutionAI Models & Local Execution
TypeSpeech & Transcription EnginesSpeech & Transcription Engines
Listed capabilities
  • Speech-to-text with audio intelligence
  • Summaries, topics and sentiment
  • Speaker diarization
  • Free tier for developers
  • Open-source speech-to-text, run locally free
  • 99+ languages and translation
  • Robust to accents and noise
  • Powers countless apps
Tagsspeech, assemblyai, transcription, understanding, api, freespeech, whisper, transcription, open-source, local, free
Websiteassemblyai.comgithub.com
Full pageAssemblyAI details →OpenAI Whisper details →
AlternativesAssemblyAI alternatives →OpenAI Whisper alternatives →

NVIDIA Canary-Qwen 2.5B

Speech & Transcription Engines
freeNew
  • Speech-recognition plus LLM hybrid model that transcribes and can summarize or answer questions about audio
  • Topped the Hugging Face Open ASR leaderboard at release (English)
  • CC-BY-4.0 weights

NVIDIA Parakeet

Speech & Transcription Engines
free
  • Tops the Hugging Face Open ASR Leaderboard with 6.05% average WER at 0.6B params
  • CC-BY-4.0 license, free for commercial and non-commercial use
  • RTFx ~3,386 — extremely fast inference relative to accuracy

sherpa-onnx

Speech & Transcription Engines
freeNew
  • Offline speech-to-text, text-to-speech, VAD and speaker diarization without internet
  • Runs on Android, iOS, Raspberry Pi, WebAssembly and desktop with many language bindings
  • Apache-2.0

faster-whisper

Speech & Transcription Engines
freeNew
  • Whisper reimplementation on CTranslate2, up to 4x faster with less memory
  • int8 quantization for GPU and CPU
  • MIT licensed Python library

FunASR

Speech & Transcription Engines
freeNew
  • Open-source speech recognition toolkit with Paraformer and SenseVoice models
  • Streaming ASR, VAD, punctuation and speaker diarization
  • Strong Mandarin and multilingual accuracy
  • Runs on CPU or GPU, MIT-style license

Moonshine

Speech & Transcription Engines
freeNew
  • Small streaming speech-recognition models for phones, browsers and low-power devices
  • Low latency for live voice interfaces
  • Free open-source weights and runtime