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Developer API
Gradium
Low-latency text-to-speech, speech-to-text and speech translation APIs from the Kyutai research team.
Developer API
Orkas Speech API
Hosted text-to-speech API with 12 Chinese and English voices, billed from the same credits as Orkas's other AI APIs.
Highlighted rows differ between these picks
| Attribute | Gradium | Orkas Speech API |
|---|---|---|
| Platform type | Developer API | Developer API |
| Pricing | Subscription pricing Free; $13-$1,615/mo credit plans; Enterprise custom | Usage Based pricing 500 free credits; plans from $5.99/month |
| Test it | Free trial | Free trial |
| Calls | — | — |
| Human handoff | No | No |
| Setup difficulty | Technical | Technical |
| Use cases | Custom Voice Apps Real Time Assistants Content Localization | Custom Voice Apps Content Localization |
| Useful for |
|
|
| Integrations | ||
| LiveKit | — | |
| Pipecat | — | |
| Vapi | — | |
| Python SDK | — | |
| WebSocket API | — | |
| Baseten | — | |
| REST API | — | |
| OpenAI-compatible endpoint | — | |
Platform type
- Gradium
- Developer API
- Orkas Speech API
- Developer API
Pricing
- Gradium
Subscription pricing
Free; $13-$1,615/mo credit plans; Enterprise custom
- Orkas Speech API
Usage Based pricing
500 free credits; plans from $5.99/month
Test it
- Gradium
- Free trial
- Orkas Speech API
- Free trial
Calls
- Gradium
- —
- Orkas Speech API
- —
Human handoff
- Gradium
- No
- Orkas Speech API
- No
Setup difficulty
- Gradium
- Technical
- Orkas Speech API
- Technical
Use cases
- Gradium
- Custom Voice AppsReal Time AssistantsContent Localization
- Orkas Speech API
- Custom Voice AppsContent Localization
Useful for
- Gradium
- • European-language voice agents
- • EU data residency
- • Streaming TTS and STT from one vendor
- • Live speech translation
- Orkas Speech API
- • Chinese narration and app audio
- • Developers already using Orkas credits
- • Simple text-to-audio file generation
Integrations
| Gradium | Orkas Speech API | |
|---|---|---|
| LiveKit | — | |
| Pipecat | — | |
| Vapi | — | |
| Python SDK | — | |
| WebSocket API | — | |
| Baseten | — | |
| REST API | — | |
| OpenAI-compatible endpoint | — |
What would these cost to run?
Enter your call volume once and see Gradium and Orkas Speech API priced at the same usage, ranked alongside every other platform.