Grok voice
Needs audio url. Served by fal.ai.
Inputs
- Audio URL
- URL of the audio containing the user's speechRequired · audio_url
- Prompt
- Optional system instructions describing the agent's persona and conversation contextOptional · prompt
- Tools
- Typed xAI tools supported by this app's convenience configurationOptional · tools
- Voice
- Built-in xAI voice for the agent's replyOptional · voice
Pricing
- Price
- Usage based, at the cost the provider reports for the call
- Billing
- Billed at the exact provider cost, without a per-call cap. The initial reservation is an estimate; additional usage is debited and unused funds are refunded.
- Price checked
- 7 October 2026
Call
Your agent reads the schema and the price with inspect_tool before it runs the tool.
- MCP call
- cURL command
- TypeScript
- Tool ID
Alternatives
- ElevenLabs forced alignmentfal.ai$0.22/unit
- Gemini 3.8 Flash Lite TTS speech and two-speaker dialoguefal.ai$0.03/1,000 characters
- Gemini 3.8 Flash TTS speech and two-speaker dialoguefal.ai$0.045/1,000 characters
- VEED clean audiofal.ai$0.0125/unit
- xAI text to speechfal.ai$0.015/1,000 characters
- Compare all 21
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