google / TTS
Gemini 2.5 Flash TTS
google/gemini-2.5-flash-ttsFast Gemini TTS
Best for: Turning text into natural-sounding speech
Catalog status
Enabled
Research checked
2026-10-06
Benchmark results
Results are source-attributed, not TokenRex measurements. Different tests and thinking variants are not interchangeable.
Published benchmark coverage
Reviewed sources do not include results for this exact version. Provider specifications and API capabilities remain listed separately.
Model specifications
Input token limit
8.19K
Published provider limit
Maximum output
16.38K
Published provider limit
Input and output modalities
Provider-reported formats; API compatibility is detailed below.
Input
Output
- Exact model ID
- google/gemini-2.5-flash-tts
- Model type
- TTS
- Input token limit
- 8,192 tokens
- Maximum output
- 16,384 tokens
Input token limits describe provider input capacity. Published provider limits are not independently tested TokenRex request limits.
Versions and thinking levels
One enabled version is currently listed for this model.
Features and tool support
TokenRex’s exposed interface, not every feature advertised by the provider. “Available” describes the implemented interface, not a successful test of every input or tool.
Input through TokenRex
AvailableText up to 8,000 characters per call on POST /v1/audio/speech, with a voice name.
Output through TokenRex
AvailableMP3 audio file, or live audio chunks with "stream_format": "sse" on OpenAI models (tested).
Function tools
Not exposedSpeech endpoint only — it reads text aloud and does not run tools.
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.