audio model comparison
GPT-4o Transcribe vs Grok Voice Transcribe 2.0
GPT-4o Transcribe and Grok Voice Transcribe 2.0 are both current audio models, from OpenAI and xAI. Grok Voice Transcribe 2.0 is 72% cheaper per audio minute than GPT-4o Transcribe, $0.001667 vs $0.006. On Artificial Analysis AA-WER v2, GPT-4o Transcribe scores 3.96 % WER and Grok Voice Transcribe 2.0 2.29 % WER (Artificial Analysis, measured October 13, 2026).
Data verified October 13, 2026 · Dataset 2026-10-13
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | GPT-4o Transcribe | Grok Voice Transcribe 2.0 |
|---|---|---|
| Price per audio minute | $0.006 | $0.001667 (better) |
| Artificial Analysis AA-WER v2 | 3.96 % WER (#6 of 6) | 2.29 % WER (#3 of 6) (better) |
| Artificial Analysis AA-WER Streaming | Not measured | 2.73 % WER (#1 of 2) |
| Provider | OpenAI | xAI |
| Release date | March 20, 2025 | September 18, 2026 |
| Access | API only | API only |
| Context window | 16,000 tokens | Not reported |
| Max output | 2,000 tokens | Not reported |
| Input | text, audio | audio |
| Output | text | text |
Scores:Artificial Analysis · 2026-10-13Artificial Analysis · 2026-10-13
When to choose each
GPT-4o Transcribe
Best for
- Speech transcription
Watch out for
- OpenAI announced its deprecation on 2026-08-26 and recommends GPT Transcribe, which costs $0.0045 per minute against about $0.006 here
Grok Voice Transcribe 2.0
Best for
- Low-cost batch transcription
- Streaming transcription for voice apps
Watch out for
- xAI's per-model page leaves pricing blank; the rates come from its models table and launch post
GPT-4o Transcribe vs Grok Voice Transcribe 2.0 FAQ
Which is cheaper, GPT-4o Transcribe or Grok Voice Transcribe 2.0?
Grok Voice Transcribe 2.0 is 72% cheaper per audio minute than GPT-4o Transcribe, $0.001667 vs $0.006.
Which scores higher on independent benchmarks, GPT-4o Transcribe or Grok Voice Transcribe 2.0?
Grok Voice Transcribe 2.0 leads on Artificial Analysis AA-WER v2, 2.29 % WER to 3.96 % WER. Scores are independent evaluations, not either vendor's launch figures.
Related comparisons
- Gemini 3.1 Flash Live Preview vs GPT-4o Transcribe
- Gemini 3.5 Live Translate Preview vs GPT-4o Transcribe
- Gemini 3.5 Transcribe vs GPT-4o Transcribe
- Gemini 3.5 Transcribe vs Grok Voice Transcribe 2.0
- Gemini 3.8 Flash-Lite TTS vs GPT-4o Transcribe
- Gemini 3.8 Flash TTS vs GPT-4o Transcribe
- Gemini 3.8 Live vs GPT-4o Transcribe
- GPT-4o Transcribe vs GPT Transcribe
- GPT-4o Transcribe vs Scribe v2
- GPT-4o Transcribe vs Scribe v2 Realtime
Production evaluation
Choosing between GPT-4o Transcribe and Grok Voice Transcribe 2.0?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty