OpenAI Text-to-Speech Models by OpenAI
4 models2023–2025Up to 2k ctxFrom $0.6/1M input
Last refreshed 2026-06-07. Next refresh: weekly.
Details
ResearcherOpenAI
LicenseProprietary
Commercial useCommercial use: conditional
Models4
Released2023–2025
Max context2k
Capabilities
Multimodal1 of 4 models
Links
WebsiteAbout
OpenAI's text-to-speech family includes the legacy TTS endpoints and the newer GPT-4o mini TTS model for controllable, low-latency speech generation.
Decision facts
- Best fit
- audiotext to speechvision and multimodal work
- Capability starting point
- GPT-4o Mini TTS with 2k context and multimodal inputs
- Lowest tracked input
- GPT-4o Mini TTS · $0.6/1M · OpenAI API
- Closest related family
- GPT Realtime 2
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
4 in view
GPT-4o Mini TTSCurrent
Use when the workload needs audio, 2k context, and multimodal inputs.
2025-03audio2k contextmultimodal inputs
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| GPT-4o Mini TTS | Use when the workload needs audio, 2k context, and multimodal inputs. | 2025-03 | audio2k contextmultimodal inputs | Current |
| TTS-1 | Use when the workload needs audio. | 2023-11 | audio | Current |
| TTS-1 HD | Use when the workload needs audio. | 2023-11 | audio | Current |
| OpenAI TTS | Use when the workload needs text to speech and audio. | 2023-11 | text to speechaudio | Current |
Release Timeline
2 release groups2025-03
1 current
GPT-4o Mini TTS
Currentaudio2k contextmultimodal inputs
2023-11
3 current
Specifications(4 models)
| Model | Released | Context | Multimodal |
|---|---|---|---|
| GPT-4o Mini TTS | 2025-03 | 2k | Yes |
| TTS-1 | 2023-11 | — | No |
| TTS-1 HD | 2023-11 | — | No |
| OpenAI TTS | 2023-11 | — | No |
Available From(1 provider)
Pricing
| Model | Provider | Input / 1M | Output / 1M | Type |
|---|---|---|---|---|
| GPT-4o Mini TTS | OpenAI API | $0.6 | — | Serverless |
| TTS-1 | OpenAI API | $15 | — | Serverless |
| TTS-1 HD | OpenAI API | $30 | — | Serverless |
