AssemblyAI vs f4transkript
AssemblyAI
assemblyai.comf4transkript
audiotranskription.deSide by side
| Figure | AssemblyAI | f4transkript |
|---|---|---|
| Price from | $0.15/mo | €25/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 13 | 25 |
| Spec score · Transcription Software | 8.8 (#8) | 8.6 (#14) |
| Spec score · AI transcription tools | 8.7 (#13) | 8.3 (#23) |
| Spec score · Transcription tools | 8.8 (#11) | 8.2 (#17) |
| Export formats | SRT,VTT | DOCX,RTF,SRT |
| Free plan | No | No |
| Languages supported | 99 | 46 |
| Security | AssemblyAI offers TLS 1.2+ encryption in transit, AES-256 encryption at rest, zero data retention, and an opt-out from model training. | The maker says automatic transcription runs on its own servers in Germany, uses encrypted transfer and storage, and is GDPR-compliant; manual transcription and analysis run locally without data transfer. |
| Speaker identification | Yes | Yes |
| Timestamp support | Yes | Yes |
Plans
AssemblyAI
- Free creditsFree
- Pay as you go — Universal-2$0.15 a month
- Pay as you go — Universal-3.5 Pro$0.21 a month
- Pay as you go — Universal-Streaming$0.15 a month
- Pay as you go — Universal-3.5 Pro Realtime$0.45 a month
- Free tierFree
- Universal-2$0.15 a month
- Universal-Streaming$0.15 a month
- Universal-Streaming Multilingual$0.15 a month
- Universal-3.5 Pro$0.21 a month
f4transkript
- Student license (3 months)€25, paid once
- Student license (3 months)€25 a month
- Student license (6 months)€33, paid once
- Student license (6 months)€33 a month
- f4 (6 months)€149, paid once
- f4 (6 months)€149 a month
- f4 (2 years)€299, paid once
- f4 (2 years)€299 a month
- f4 (5 years)€449 a month
- f4 (5 years)€449, paid once
In their own words
AssemblyAI
AssemblyAI provides Voice AI models and APIs for speech-to-text, speech understanding, and voice applications. Its Speech Understanding API can identify and diarize speakers, summarize speech, extract action items and key phrases, detect sentiment, entities, and topics, and handle formatting, language detection, translation, PII redaction, and content moderation. The platform lists support for 99 languages and translation into 86. It offers streaming and voice-agent latency below 300ms and states that it processes more than 800 million API calls per month. Use its managed cloud or self-host models in your own environment; the service also lists API access and integrations including Twilio, Zoom RTMS, Zapier, and LangChain. Security options include TLS 1.2+ in transit, AES-256 at rest, zero data retention, and opting out of model training. A free tier is available. Pay-as-you-go billing is based on usage, with monthly invoices and no minimum commitments. Universal-2 is listed at $0.15 per hour of audio; Universal-3.6 Pro Realtime is $0.45 per hour.
f4transkript
f4 combines f4transkript, f4x, and f4analyse in one interface for automatic and manual transcription, correction, and qualitative text analysis. Automatic transcription supports speaker differentiation, pause marking, timestamps, custom word lists, and DOCX, RTF, or SRT downloads. Manual work includes variable playback speed, rewind intervals, timestamps, text blocks, and USB foot-pedal support. Analysis tools provide codes, memos, comments, quote filtering, case and group comparisons, and Word or Excel exports. The service supports 46 languages and runs on Linux, macOS, web, and Windows. Without a license, the demo allows 10 texts, 10 codes, and five minutes of playback; new accounts receive 15 minutes of automatic transcription free. The maker says automatic transcription runs on servers in Germany with encrypted transfer and storage, while manual transcription and analysis run locally without data transfer. Mixed-language recordings use only the language selected at upload, so other passages may be blank or inaccurate. Plans start at €25 a month.