Lowest price
Choose Gemini 3.8 Flash TTS
Gemini 3.8 Flash TTS costs $9.00 / 1M audio tokens, against $12.00 / 1M audio tokens for GPT-4o Mini TTS.
Gemini 3.8 Flash TTS vs GPT-4o Mini TTS: price, context and capabilities
Choose Gemini 3.8 Flash TTS for the lowest price and the latest release; on the other points the two are level or the data is missing.
In short
- Gemini 3.8 Flash TTS is 25% cheaper than GPT-4o Mini TTS at the headline price ($9.00 / 1M audio tokens vs $12.00 / 1M audio tokens).
- Gemini 3.8 Flash TTS is the newer model (September 2026, against Mar 20, 2025).
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Latest release
Choose Gemini 3.8 Flash TTS
Gemini 3.8 Flash TTS is the newer release (September 2026, against Mar 20, 2025 for GPT-4o Mini TTS).
Specifications side by side
| Gemini 3.8 Flash TTS | GPT-4o Mini TTS | |
|---|---|---|
| Provider | OpenAI | |
| Category | Text to speech | Text to speech |
| Status | Generally available | Generally available |
| Headline price | $9.00 / 1M audio tokens | $12.00 / 1M audio tokens |
| Context window | 8k | No data |
| Max output | 16k | No data |
| Released | September 2026 | Mar 20, 2025 |
| Knowledge cutoff | No data | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | No data | No data |
| API model id | gemini-3.8-flash-tts | gpt-4o-mini-tts |
Frequently asked questions
Should I choose Gemini 3.8 Flash TTS or GPT-4o Mini TTS?
Choose Gemini 3.8 Flash TTS for the lowest price and the latest release; on the other points the two are level or the data is missing.
Which is cheaper, Gemini 3.8 Flash TTS or GPT-4o Mini TTS?
Gemini 3.8 Flash TTS is 25% cheaper than GPT-4o Mini TTS at the headline price ($9.00 / 1M audio tokens vs $12.00 / 1M audio tokens).
What is the difference between Gemini 3.8 Flash TTS and GPT-4o Mini TTS?
Gemini 3.8 Flash TTS is made by Google and GPT-4o Mini TTS by OpenAI. Gemini 3.8 Flash TTS is 25% cheaper than GPT-4o Mini TTS at the headline price ($9.00 / 1M audio tokens vs $12.00 / 1M audio tokens). Gemini 3.8 Flash TTS is the newer model (September 2026, against Mar 20, 2025).
Which is newer, Gemini 3.8 Flash TTS or GPT-4o Mini TTS?
Gemini 3.8 Flash TTS was released on September 2026 and GPT-4o Mini TTS on Mar 20, 2025.