Flatkey AI

What is Flatkey AI?

Flatkey AI is a unified API gateway that provides access to over 160 official frontier models from providers like OpenAI, Anthropic, Google, DeepSeek, and more—all through a single key. By routing requests to real, official endpoints, Flatkey ensures you get authentic model outputs without any silent swaps, fp8 re-serves, or downgrades. The platform offers pricing at 50–90% of list price, with a top-up bonus that can stack to an effective 50% discount. Prices are available in BRL, INR, or CNY, with 3DS-secured checkout.

Key features include a task-aware and health-aware router that automatically selects the best official model per request based on quality and cost. The router uses five upstream channel classes and reroutes instantly if a channel degrades, ensuring high availability. Flatkey also provides an Anthropic-shaped API for seamless integration with Claude Code or Cline, and an OpenAI-compatible gateway for text, video, audio, and image models.

Use cases range from individual developers and startups to large enterprises. Developers can switch from other providers by changing just one line of code, keeping their existing SDKs. Enterprises benefit from tree-structured sub-keys with budgets and model allowlists, a per-request ledger API, and 48-hour invoicing. The platform serves 46 billion tokens per month, with over 4,000 paying users and 100+ enterprises in production.

Technical details: Every model is probed hourly against its official fingerprint, with a public audit log for transparency. The SLA is a public document, not a sales promise. Flatkey supports models from GPT, Claude, Gemini, DeepSeek, Qwen, GLM, and Seedance 2.5 video. The self-serve tier offers 60–90% of list price, while enterprise pricing is even lower. With no model swaps and audited infrastructure, Flatkey delivers reliable, cost-effective access to the best AI models.

Use Cases

Key Features

unified API gateway 160+ frontier models task aware routing health aware routing cost optimization 3DS secured checkout Anthropic shaped API OpenAI compatible gateway multi currency pricing no silent downgrades

Who is it for?

individual developers, startups, enterprises, AI engineers, product teams, Claude Code users, Cline users, global teams

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