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Aether supports a wide range of LLM providers via the Pi framework that powers it under the hood. You bring your own API keys — nothing is proxied through Aether’s servers. Your keys go directly from your device to each provider’s API endpoint.

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Supported Providers

ProviderNotes
OpenAIGPT-4o, o1, o3, and all other OpenAI chat models
Anthropic (Claude)Claude 3.5/3.7 Sonnet, Claude Opus, and the full Claude family
Google (Gemini)Gemini 1.5 Pro/Flash, Gemini 2.0, and other Gemini models
DeepSeekDeepSeek-V3, DeepSeek-R1
GroqUltra-fast inference for Llama, Mixtral, and Gemma models
MistralMistral Large, Mistral Small, Codestral, and others
Cloudflare Workers AIServerless AI inference at the edge via your Cloudflare account
The Pi framework supports additional providers beyond those listed here. If your preferred provider is compatible with Pi, it may already be available when you tap Add Provider in Settings.

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Adding a Provider

1

Open Settings

Tap the gear icon in the top-right corner of the chat screen to open Settings.
2

Go to Providers

Tap Providers in the Settings menu to see your currently configured providers.
3

Add a new Provider

Tap Add Provider and select your desired provider from the list.
4

Enter your API key

Paste or type your API key into the key field. You can obtain keys from each provider’s developer console.
5

Save

Tap Save. Aether immediately validates the key and makes that provider’s models available in the model selector.

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Switching Models

Tap the model selector displayed above the composer input bar. The list shows every model available across all of your configured providers. Tap any model to switch to it — the change takes effect on the next message you send.

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Model Configuration

For models that expose reasoning controls — such as OpenAI’s o-series (o1, o3) — Aether lets you adjust the reasoning effort level. After selecting an o-series model, tap the model name or the configuration icon to reveal the effort slider and choose low, medium, or high based on the trade-off between speed and depth of reasoning you need.
API keys are stored only on your device within Aether’s private app storage. They are never sent anywhere other than the respective provider’s own API endpoint.
Use DeepSeek or Groq for fast, cost-effective responses on straightforward tasks. Reach for Claude or GPT-4o when you need deep reasoning, nuanced writing, or complex multi-step problem solving.