Grok TTS（文字转语音）
xAI 的语音合成模型，经 Cloudflare 平台直接计费、免额外 Key，落在每日免费额度内即可免费合成语音。模型 id：xai/grok-tts。
Free Grok TTS API
Updated 6/5/2026
xAI text-to-speech on Cloudflare — natural voices within the daily free allowance, no extra key.
About the Model
How to call Grok TTS
javascript
const res = await env.AI.run('xai/grok-tts', {
text: 'Hello from Grok on Cloudflare.',
});curl
curl https://api.cloudflare.com/client/v4/accounts/$CF_ACCOUNT_ID/ai/run/xai/grok-tts \
-H "Authorization: Bearer $CF_API_TOKEN" \
-H "Content-Type: application/json" \
-d '{"text":"Hello from Grok on Cloudflare."}' --output speech.mp3Provider Details
The following platforms provide free access to Grok TTS through free tiers, trial credits, or daily quotas.
| Provider | Context Window | Free Quota | Requires CC | Trust / Verified | Action |
|---|---|---|---|---|---|
| Cloudflare Workers AI | N/A | 100 requests per day | No | Trust 99 | Details |
Frequently Asked Questions
Is Grok TTS free to use?
Yes. Grok TTS is available for free through 1 provider(s) listed below, with no purchase required.
What are the rate limits and quotas?
Free access varies by provider — Cloudflare Workers AI: Rate Limit.
How do I get a free Grok TTS API key?
Sign up with Cloudflare Workers AI, then create an API key from your dashboard. See the provider details above for the exact steps.
Which providers offer Grok TTS for free?
Grok TTS is currently available for free via: Cloudflare Workers AI.
Know another free provider for Grok TTS?
Help the community by sharing other ways to access this model for free.