Audio modelDeprecated
GPT-4o Mini TTS
OpenAI
- Released
- -
- Data date
- October 2, 2026
- Model class
- Access
GPT-4o Mini TTS is a speech-synthesis model built on GPT-4o Mini. It converts text into natural-sounding speech, accepts up to 2,000 input tokens, and produces audio only. Voice and delivery are controllable TTS outputs; a voice dialogue that understands and answers audio needs a separate conversation model.
On October 1, 2026, OpenAI announced that both listed TTS snapshots would shut down on January 6, 2027. The provider recommends GPT-Realtime 2.1 Mini as the replacement and points to the Realtime API for migration.
Specifications and access
| Specification | Value and source |
|---|---|
| Model class | Text-to-speechSource |
| Access | APISource |
| API model ID | gpt-4o-mini-ttsSource |
| Input | TextSource |
| Output | AudioSource |
| Task | Speech generationSource |
| Supported details | Steerable voice and deliverySource |
| Input limit | 2,000 tokensSource |
| Shutdown | Both listed snapshots shut down on January 6, 2027; OpenAI recommends GPT-Realtime 2.1 MiniSource |
Popularity
35.9 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Additional source | OpenAI model documentation (retrieved October 2, 2026) · OpenAI GPT-4o Mini TTS model documentation · Editorial description reviewed October 2, 2026 |
| Additional source | Model lifecycle (retrieved October 2, 2026) · OpenAI text-to-speech model deprecations · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |