# Skysay Blog

Product news and engineering notes from the Skysay team.

- [Comparing text-to-speech engines for AI agents across eight checks](https://skysay.ai/blog/text-to-speech-engines-compared.md): We measured ten streaming voice configurations from Northern Europe across eight checks, with HeyGen’s finished-file route reported separately for language coverage.
- [We ran GPT-Live-1 through 107 calls in seven languages. Here is what we found.](https://skysay.ai/blog/gpt-live-seven-languages.md): A synthetic-caller test of our GPT-Live-1 voice agent across seven languages, and what a Sinhala-specific breakdown taught us about language following.
- [Skysay: agent-native telephony is live](https://skysay.ai/blog/launch.md): Real phone numbers, calls, and SMS an AI agent can run on its own — over MCP, described in llms.txt. Here is what shipped and how it deploys.
- [Your agent already knows how to use Skysay](https://skysay.ai/blog/works-with-any-ai.md): The MCP + llms-full.txt thesis — why an agent-native telephony API needs no bespoke integration.