Side-by-Side Comparison
DeepScript vs OpenAI Whisper API — production stack vs. raw engine
Whisper is a brilliant ASR engine — but as a production stack it lacks almost everything: no diarization, no EU data, no retention guarantees, no DACH dialects. DeepScript builds that layer on top.
OpenAI Whisper has been the most important open-source speech-to-text model since 2022. The hosted API costs $0.006 per minute (~$0.36/h) — almost too cheap to compare. Using Whisper API directly, you get only the raw model: no diarization, no confidence scores, no retention guarantees, US hosting. Production workflows lack critical layers. DeepScript builds those layers — diarization, DACH dialect model, EU hosting, custom vocabulary, webhooks, MCP, editor — as a complete stack on top.
OpenAI Whisper API · founded 2022 · HQ USplatform.openai.com
| Dimension | DeepScript | OpenAI Whisper API |
|---|---|---|
| Price per hour | €0.18 | ~$0.36 (≈ €0.33) |
| Speaker diarization | Included | Not offered |
| Data residency | Nuremberg, DE | OpenAI US infrastructure |
| Retention policy for business | 30 days (Pro: permanent) | 30-day logs, otherwise undefined |
| DACH dialects | Optimised (CH/AT/DE) | Standard German |
| Custom vocabulary | Per transcription or saved | Prompt hint (limited) |
| Live transcription | WebSocket streaming | Realtime API (separate product) |
| Webhooks | Yes, HMAC-signed | No (polling) |
| Web editor | Yes, with audio sync | Not offered |
| GDPR DPA (EU-to-EU) | Yes, online signable | SCCs / DPA with OpenAI Inc. |
Pick DeepScript when ...
- You need speaker diarization (meetings, interviews, podcasts).
- EU data residency + GDPR DPA are mandatory.
- DACH dialects come up frequently.
- You want webhook delivery instead of polling.
- You need a UI editor on top of the API.
- You're building an AI agent integration via MCP.
Pick OpenAI Whisper API when ...
- You need absolute minimum pricing and only the raw transcript.
- Your use-case is single-speaker audio with no compliance requirements.
- You're already deep in the OpenAI stack and don't want another vendor.
Frequently asked questions
Does DeepScript use Whisper internally?
Parts of our engine build on Whisper-derived models, with our own fine-tunes for DACH dialects and an in-house diarization pipeline. Whisper is a good building block, but we ship the full production stack around it.
Why not self-host Whisper and get EU compliance?
It works — at a cost: GPU infrastructure (at least an A10 or L40S), inference serving layer (vLLM, Triton, Faster-Whisper), diarization pipeline (pyannote or similar), vocabulary handling, storage, audio format conversion, job queue, monitoring, compliance audits. Effective per-hour cost lands at €1-3 — before capex. DeepScript delivers all of it ready-made for €0.18.
Is Whisper more accurate than DeepScript Premium?
On English audio: comparable (Whisper Large-v3 and our Premium models both land >95% WER). On DACH dialects: no, Whisper is significantly worse there because its training set is dominated by US English. DeepScript Premium is specifically trained on Swiss German, Austrian and Low German.
What happens with a 3-speaker audio on Whisper API?
Whisper API returns a single text stream with no speaker labels. You'd have to diarize yourself (pyannote, NeMo etc.) and merge outputs — a non-trivial build. DeepScript handles that in one call and returns utterances with speaker IDs + timestamps.
Try it yourself instead?
Three transcriptions free, no credit card. Data stays in Germany. Three minutes from sign-up to finished transcript.