Codex (OpenAI) vs Microsoft MAI-Transcribe-1
Which one should you pick? Here's the full breakdown.
Codex (OpenAI)
OpenAI's cloud-based coding agent -- runs parallel tasks, proposes PRs, and lives inside ChatGPT
Powered by GPT-5.3-Codex / GPT-5.4
Microsoft MAI-Transcribe-1
Microsoft's first in-house speech-recognition model -- launched 2026-04-02. #1 on FLEURS WER overall, #1 by FLEURS WER in 11 of the top 25 global languages. Beats Whisper-large-v3, Scribe v2, GPT-Transcribe, Gemini 3.1 Flash-Lite. $0.36/hour of audio on Azure Foundry
| Category | Codex (OpenAI) | Microsoft MAI-Transcribe-1 |
|---|---|---|
| Ease of Use | 8.0 | 6.0 |
| Output Quality | 8.0 | 9.5 |
| Value | 8.0 | 9.0 |
| Features | 9.0 | 7.0 |
| Overall | 8.3 | 7.9 |
Pricing Comparison
| Feature | Codex (OpenAI) | Microsoft MAI-Transcribe-1 |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0.36 |
Benchmark Head-to-Head
GPT-5.3-Codex benchmarks — Microsoft MAI-Transcribe-1 has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| SWE-bench | Real GitHub issue fixing | 72% |
| HumanEval | Python code generation | 95% |
Which Should You Pick?
Pick Codex (OpenAI) if...
- ✓Easier to use (8 vs 6)
- ✓More features (9 vs 7)
Developers already paying for ChatGPT Plus who want a coding agent at no extra cost. Especially good for parallel task execution -- assign multiple bug fixes or feature branches and let Codex work them simultaneously.
Visit Codex (OpenAI)Pick Microsoft MAI-Transcribe-1 if...
- ✓Higher output quality (9.5 vs 8)
- ✓Better value for money (9/10)
Developers and enterprises who need best-in-class multilingual speech-to-text for high-volume use cases (meeting recording pipelines, call-center transcription, accessibility captioning at scale, multilingual audio indexing). Especially relevant for Azure shops already on Microsoft infrastructure.
Visit Microsoft MAI-Transcribe-1Our Verdict
Codex (OpenAI) edges out Microsoft MAI-Transcribe-1 with a 8.3 vs 7.9 overall score. Both are solid picks, but Codex (OpenAI) has the advantage in features.