| Field | Speechify API | Pollinations.ai |
|---|---|---|
| Type | Ongoing free tier · renewing-quota | Ongoing free tier · perpetual |
| What's free | 50,000 characters/month TTS (hard cap) + 60 min/month voice agents | Free hosted image models (Flux, Turbo, Stable Diffusion) via a simple GET URL; also text and audio. No signup required to start |
| Rate limits | 3 concurrent calls; hard cap pauses at the limit (no overages) | Anonymous ~1 request / 15s; free registration (Seed tier) ~1 request / 5s |
| Expires | no expiry | no expiry |
| The catch | Commercial use is allowed on the free tier. No credit card required. Hard monthly cap that pauses at the limit. | Anonymous free images may carry a watermark (since 2025); free registration removes it via the nologo parameter. No card, no phone. Commercial use is not explicitly guaranteed in the docs. |
| Credit card | not required | not required |
| Phone verification | not required | not required |
| Commercial use | allowed | not confirmed |
| OpenAI-compatible | no | no |
| Modalities | audio | image, text, audio |
| Free models (sample) | no sample | openai-fast |
| Official docs | speechify.ai/pricing | github.com/pollinations/pollinations/blob/master/APIDOCS.md |
| Last verified | 2026-08-14 | 2026-08-14 |