Flatkey
Category: AI Infrastructure
AI infrastructure platform that gives developers over 100 official AI models and over 1,000 pay-per-call tools behind one API key, one balance and one invoice. Flatkey was founded in 2026. The company is led by Hunter Guo. Based in San Jose, United States. Total funding raised: $10M. Latest round: Series A.
- Founded
- 2026
- Headquarters
- San Jose, United States
- Total funding
- $10M
Value proposition
Replaces separate provider accounts, API keys and billing relationships with a single key and shared balance. Requests are routed through providers' official endpoints. Most models are priced at about 80% of official list prices through volume purchasing, and failed calls are not billed.
Products and solutions
Unified model router/API covering 100+ official models (OpenAI GPT, Anthropic Claude, Google Gemini, DeepSeek, GLM, Kimi, MiniMax, Seedance, Kling and others) for text, image and video. Tools layer with 1,000+ pay-per-call tools (web search, browser automation, data enrichment, social data, media generation). Playground, SDK, CLI and API, agent SKILL.md setup
Unique value
One key, more models, more tools, lower cost. A single ledger covers models and tools, calls go only to official provider endpoints, pricing is about 20% below list, and failed calls cost nothing.
Target customer
Developers, AI product teams and AI-agent builders who use several model providers and third-party tools. This includes teams building with Claude Code, Codex and OpenClaw.
Industries served
Software development, AI applications and agents, GTM and sales intelligence, media generation, GPU compute procurement
Technology advantage
Normalized schemas and error envelopes across providers and tools, intelligent routing to the best model or tool per task, and per-agent budget and allowlist policy controls. Volume purchasing drives the discounted pricing. The platform also adds a GPU compute marketplace beyond routing.
How they differentiate
Combines LLM routing with a large pay-per-call tool marketplace and a GPU compute marketplace, all on one balance. Routing uses only official endpoints, pricing is below list, and failed calls are not billed. OpenRouter focuses on model routing, and Portkey and LiteLLM are gateway and observability layers.
Main competitors
OpenRouter, Portkey, LiteLLM
Key partnerships
Integrated tool and data providers include Apify, Browserbase, Exa, Apollo, People Data Labs, Semrush, Wokelo and OpenWeather. Sister company Realset AI (real-world training data lab, same founder) shares the joint Series A.
Major milestones
2026-07: Platform launch. 2026-09: $10M Series A announced jointly with Realset AI after passing 10,000 developers.
Growth metrics
More than 10,000 developers in two months after the July 2026 launch.
Market positioning
Early-stage but fast-growing unified AI access layer. It reports more than 10,000 developers within two months of its July 2026 launch.
Geographic focus
Global. The site is offered in 11 languages, including Chinese, Japanese and Spanish, and the company is based in the US.
About Hunter Guo
Founder of Solvea (solvea.cx, vertical AI customer support), Nuvelle (nuvelle.ai) and Realset AI; over 10 years in e-commerce and AI per his LinkedIn; HKU Business School (LinkedIn also lists a Stanford University affiliation).
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Official website: https://flatkey.ai