How do I use zyphra models through the OpenRouter API?

OpenRouter serves 2 zyphra models behind one OpenAI-compatible API. Create an OpenRouter API key, point your client at https://openrouter.ai/api/v1, and set the model to an ID such as zyphra/zonos-v0.1-transformer. The quickstart has request examples for every supported SDK.

Which zyphra model has the largest context window?

Zonos v0.1 Transformer has the largest context window of any zyphra model on OpenRouter, accepting up to 4,096 tokens per request.

What is the newest zyphra model on OpenRouter?

Zonos v0.1 Transformer is the most recently added zyphra model on OpenRouter, listed on April 23, 2026.

zyphra

Access 2 zyphra models through the OpenRouter unified API including Zonos v0.1 Transformer and Zonos v0.1 Hybrid. Compare pricing, context windows, benchmarks, and capabilities between different zyphra models.

zyphra tokens processed on OpenRouter

Zyphra: Zonos v0.1 TransformerZonos v0.1 Transformer
Zonos v0.1 Transformer is a text-to-speech model from Zyphra built on a pure transformer architecture. It offers the same American and British English voice coverage as the Hybrid variant, and is suited for deployments where a transformer-only inference stack is preferred.
by zyphraApr 23, 20264K context
Zyphra: Zonos v0.1 HybridZonos v0.1 Hybrid
Zonos v0.1 Hybrid is a text-to-speech model from Zyphra built on a hybrid architecture. It produces English speech output with coverage across American and British accents in male and female voices. It is suited for English-language voice applications requiring accent and gender variety.
by zyphraApr 23, 20264K context

zyphra

Access 2 zyphra models through the OpenRouter unified API including Zonos v0.1 Transformer and Zonos v0.1 Hybrid. Compare pricing, context windows, benchmarks, and capabilities between different zyphra models.

zyphra tokens processed on OpenRouter

zyphra

Frequently asked questions

zyphra

Frequently asked questions