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About Sleek BYOK

Sleek is a native iOS client for OpenRouter — bring your own key and get every major AI model in one clean, fast, beautifully minimal app. No Sleek account. No middleman servers. Your OpenRouter key stays on your device, and every request goes straight from your iPhone to the model. You pay OpenRouter's raw per-token rates for AI usage — no markup from us, ever. One app. Every modality. • Chat with hundreds of models — Claude, GPT, Gemini, Llama, and more — and switch between them in a tap. • Generate images with the latest image models, right in the conversation. • Generate video from a prompt and save it straight to Photos. • Talk hands-free with live push-to-talk voice — speak, get a spoken reply back. • Dictate into any chat with universal on-device audio capture. • Make music and download the track. Built to feel high-end. A dark, distraction-free interface with smooth streaming, clean markdown, and thoughtful micro-interactions throughout. It looks and feels like a flagship app — because it is one. Make it yours. • Presets — save reusable system prompts and parameters for different jobs. • Per-modality prompts — steer image style, voice delivery, music genre, and more independently. • Memories & folders — keep context organized and let the app pull in what's relevant. • Model explorer — browse full stats, pricing, and context windows for every model, and set defaults per task. • Fine control — temperature, max tokens, provider routing, and more when you want it; sensible defaults when you don't. Private by design. Sleek has no backend of its own. There's no analytics pipeline, no Sleek account, and no server that ever sees your conversations or your key. Everything lives on your device. What you need to get started: Sleek runs on your own OpenRouter API key (free to create at openrouter.ai). Two ways in: • Connect OpenRouter — sign in once and Sleek provisions a key automatically. No copy-pasting. • Paste a key — already have an OpenRouter API key? Add it in Settings, no account needed. Minimal on the outside. Every model on the inside. That's Sleek.

What’s new

Version 1.3 · Updated August 6, 2026

• New: Sleek Pro — a one-time purchase that unlocks image and video generation, voice and dictation, music, model comparison, presets, memory, attachments, and web search. Text chat with any model stays free.

App privacy

The developer, Brown Fox LLC, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • User Content: Photos or Videos, Audio Data, Other User Content

Used for: App Functionality

Alternatives to Sleek BYOK

Looking for apps like Sleek BYOK? Here are 6 similar apps on the App Store. The highest rated is Lumiere: OpenClaw & AI Agents (5.0/5), and all 6 are free to download.

Sleek BYOK vs. alternatives
App Rating Price Last updated Compare
Sleek BYOK 5.0 / 5 (1 rating) Free August 6, 2026
Oqta: Multi-Model AI Chat – Free Sep 18, 2026 Compare
opchat: Private On-Device AI 4.0 / 5 (1) Free Oct 13, 2026 Compare
Oriveo: Multi-Model AI Chat 4.2 / 5 (5) Free Oct 15, 2026 Compare
RouterChat 4.9 / 5 (43) Free Oct 7, 2026 Compare
Cumbersome: AI LLM API Client 4.9 / 5 (91) Free Oct 15, 2026 Compare
Lumiere: OpenClaw & AI Agents 5.0 / 5 (2) Free Feb 21, 2026 Compare

Compare Sleek BYOK with the top alternatives: ratings, updates, ASO score and keyword gaps →