GPT-4o Mini TTS vs Gemini 2.5 Flash TTS
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| Comparison | GPT-4o Mini TTSgpt-4o-mini-tts | Gemini 2.5 Flash TTSgemini-2.5-flash-tts |
|---|---|---|
| Type | TTS | TTS |
| Best for | Turning text into natural-sounding speech | Turning text into natural-sounding speech |
| TokenRex price | $0.015 per 1k chars | $0.0171 per 1k chars |
| Cached input / 1M tokens | No separate cached rate listed | No separate cached rate listed |
| Cache write / 1M tokens | Not applicable | Not applicable |
| Cached output | Not offered · standard output rate applies | Not offered · standard output rate applies |
| Web search | Not applicable | Not applicable |
| Market price | $0.015 per 1k chars | $0.0171 per 1k chars |
| Context window (provider) | — | Not applicable |
| Input token limit (provider) | Within the context window | 8,192 tokens |
| Maximum output | — | 16,384 tokens |
| Vendor input modalities | Text | Text |
| Vendor output modalities | Audio | Audio |
| TokenRex endpoints | POST /v1/audio/speech | POST /v1/audio/speech |
| Benchmarks | ||
No overall score, winner or cost-versus-score frontier is calculated without comparable, attributable benchmark evidence. Different test configurations appear separately. Vendor capabilities are distinct from TokenRex API support.
— means no published value or no matching capability. Provider token limits are not tested gateway guarantees; TokenRex media controls and response formats are listed separately.
GPT-4o Mini TTS
Sources and verification
Provider specifications describe the upstream model, not a guarantee of every feature through TokenRex. Prices come from the enabled catalog; benchmark results belong to the exact tested model.
- Vendor model documentation
Vendor-reported
Last checked
Gemini 2.5 Flash TTS
Sources and verification
Provider specifications describe the upstream model, not a guarantee of every feature through TokenRex. Prices come from the enabled catalog; benchmark results belong to the exact tested model.
- Provider model specifications
Vendor-reported
Last checked
Research notes (1)
- TokenRex uses a gateway model ID; the vendor documentation uses a preview-TTS ID. Audio compatibility must be checked for the gateway route.
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