Flatkey.ai is a unified AI gateway that provides access to 300+ models and 1,000+ metered tools through a single API key and consolidated billing. The platform lets developers and AI agents call frontier models from providers like OpenAI, DeepSeek, and Anthropic alongside tools for web search, data enrichment, and media generation, with per-call pricing and a single invoice. It supports OpenAI-compatible endpoints, SDKs, and CLI workflows, making it a drop-in infrastructure layer for agentic applications.
- Artificial Intelligence
- AI Agents
- Developer Tools
- Software Only
Funding
Founders
Product
Problem
Developers and AI teams face growing fragmentation when integrating multiple AI models and tools, often juggling separate API keys, billing accounts, and authentication schemes across different providers. This complexity increases integration overhead, complicates cost tracking, and slows down the deployment of agentic applications that need both model inference and external tooling.
Solution
Flatkey.ai provides a unified AI routing platform that consolidates access to 300+ AI models and 1,000+ metered tools behind a single API key and a single balance. The platform offers an OpenAI-compatible base URL, making it a drop-in replacement for existing integrations, while its live model catalog and tools marketplace let developers discover and invoke the right resource on demand. Flatkey handles authentication, routing, and billing across all providers, so teams can build with frontier models from OpenAI, DeepSeek, Anthropic, and others without managing separate vendor relationships. The platform also supports SDK and CLI workflows, enabling both human developers and autonomous agents to execute complex multi-step tasks—such as live web search, contact enrichment, and media generation—through one consistent interface.
Target Audience
Primary customers are software developers, AI engineers, and product teams building agentic applications or AI-powered features who need a unified, cost-effective way to access multiple models and tools without managing separate vendor integrations.
Features
- Single API key and unified balance covering 300+ AI models and 1,000+ metered tools from multiple providers
- OpenAI-compatible base URL (`https://router.flatkey.ai/v1`) for drop-in integration with existing codebases and tools like Claude Code and Codex
- Live model catalog and tools marketplace with per-tool pricing, billing units, and idempotency key support for reliable execution
- Consolidated per-call billing with a single invoice, charging only for successful calls and failed calls consuming no balance
- SDK and CLI support for programmatic access, enabling agentic workflows that combine model inference with external actions like search, enrichment, and media generation