Cumbersome: LLM AI API Client

Cumbersome is an AI API client that connects to various LLM providers like OpenAI, Anthropic, and Google AI Studio. It allows users to manage multiple models, edit conversations, and use local models via Ollama on Apple devices.

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At a glance

Pricing

Free · Usage-based

Free tier

Yes

API

Yes

Skill level

Technical

About

What is Cumbersome: LLM AI API Client?

Cumbersome is a free iOS and macOS client designed for advanced users to interact with various large language model APIs, including OpenAI, Anthropic, Google AI Studio, OpenRouter, Z.ai, Vercel AI Gateway, and Ollama. It offers granular control over AI interactions, allowing users to switch models mid-conversation, edit any message in the history, and control parameters like temperature and system prompts. A key differentiator is its "Face/Off Mode," which sends a single prompt to three models and lets AI pick the winner. The app emphasizes privacy with iCloud sync and no backend accounts, connecting directly to providers using your API keys. It also supports local AI models via Ollama on your Mac, accessible from all Apple devices.

Best used for

Ideal for developers and researchers who need to compare different AI models, manage their API keys across providers, and run local AI models on their Mac. Especially valuable for power users who desire full parameter control and cost transparency over their AI interactions.

Common actions

access AI APIs

compare AI models

manage LLM conversations

run local AI

iosmobile_app

Capabilities

Key features

Direct API access
Face/Off Mode
Switch models mid-conversation
Edit any message
Local model support (Ollama)
Cost transparency
iCloud sync

Target Audience

developerresearcherproduct manager

Integrations

openaianthropicgoogle-ai-studioopenroutervercel-ai-gatewayollamasiriicloud

Pricing & Plans

Free · Usage-based

Free

FAQs

How does Cumbersome handle my API keys and data privacy?

Cumbersome connects your API keys directly to providers from your Apple devices. It uses iCloud for conversation sync and stores API keys in Keychain. There is no backend or account, ensuring your data remains private and is not seen by Folding Sky Co.

Can I use Cumbersome with local AI models?

Yes, Cumbersome supports local AI models by connecting to Ollama running on your Mac. This allows you to access and use these local models from your Mac, iPhone, and iPad over your local network, providing flexibility and privacy.

What is 'Face/Off Mode' and how does it work?

Face/Off Mode is a unique feature that allows you to send a single prompt to three different AI models simultaneously. The AI then picks the best response among them, enabling side-by-side comparison and helping you identify the most effective model for a given task.

Is Cumbersome truly free, or are there hidden costs?

The Cumbersome app itself is completely free with no upsells or subscriptions. You only pay the direct costs to the AI model providers for the tokens you use via your own API keys. This provides full cost transparency.

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