Deepgram Flux (speech recognition) on Cloudflare
Cloudflare Workers AI Free API tier
The catch: 10,000 Neurons a day is small (about 0.37M output tokens on gpt-oss-20b, about 49K on Llama 3.3 70B), and on Workers Free calls fail until 00:00 UTC once it is spent. The newest large models (Kimi, GLM-5.x, DeepSeek V4) need Workers Paid ($5 a month minimum) or prepaid credits.
| Access | Free API tier |
|---|---|
| Free limits | Uses the account's shared 10,000 free Neurons a day (reset 00:00 UTC) and costs 700 neurons per audio minute (WebSocket); speech recognition is limited to 720 requests/min. |
| Modality | audio |
| Credit card | Not required |
| Commercial use | Allowed |
| Trains on your data | No |
| Licence or terms | Cloudflare Self-Serve Subscription Agreement (plus each model's own licence) |
| Context window | – |
| Model id | @cf/deepgram/flux |
| Base URL | – |
| Last checked | 8 Oct 2026 |
How to use Deepgram Flux (speech recognition)
Use it in the browser; there is no API.
Quickstart
export default { async fetch(request, env) { return env.AI.run("@cf/deepgram/flux", { encoding: "linear16", sample_rate: "16000" }, { websocket: true }); } }; // Worker with an AI binding; clients connect over wss:// to the WorkerPaste into Claude Code
I want to use the free AI model "Deepgram Flux (speech recognition)" from Cloudflare (model id: @cf/deepgram/flux) in my project. Please: 1. Check the provider docs and give me the exact steps to get a free API key. 2. Give me a minimal working example that reads the key from an environment variable. 3. Tell me the real free limits and any catch (commercial use, card, data use). Listed limits: 10K neurons/day · 700 per audio minute. 4. If the same provider has a more generous free option, mention it.
Before you ship on it
- 10,000 Neurons a day is small (about 0.37M output tokens on gpt-oss-20b, about 49K on Llama 3.3 70B), and on Workers Free calls fail until 00:00 UTC once it is spent. The newest large models (Kimi, GLM-5.x, DeepSeek V4) need Workers Paid ($5 a month minimum) or prepaid credits.
- The Self-Serve Subscription Agreement (last updated 12 Sep 2025) has no non-commercial clause; free services run until Cloudflare ends them 'in our sole discretion'. The data-usage page says each model may carry its own…
- Free tiers are shared capacity: treat the limits as a ceiling, not a promise, and keep a paid fallback.
Questions
Is Deepgram Flux (speech recognition) on Cloudflare free?
Yes. Cloudflare offers it as free api tier, with these limits: 10K neurons/day · 700 per audio minute. No credit card is needed.
Can I use Deepgram Flux (speech recognition) on Cloudflare commercially?
Yes, under Cloudflare Self-Serve Subscription Agreement (plus each model's own licence). Check the current terms before you ship.
How do I start with Deepgram Flux (speech recognition) on Cloudflare?
Use it in the browser; there is no API.
Source: developers.cloudflare.com/workers-ai/models/flux/, checked 8 Oct 2026.