Experiential — Open Source AI Gateway
Provider 
Founded 2026
Sells To Developer
Pricing Model Usage-based
Ownership Venture-backed private company

Open source AI gateway routing every model behind one zero-markup OpenAI-compatible endpoint.
Experiential is the open source gateway from Experiential Labs, a San Francisco company in Y Combinator's Summer 2026 batch. It puts one OpenAI-compatible endpoint, api.experientiallabs.ai/v1, in front of hosted providers, the customer's own provider keys, and the customer's own local models, routing each request at the provider's list price with no markup on tokens.
The gateway handles routing policy, provider failover on capacity errors, budgets and hard caps enforced per request, key management, model allowlists, and per-agent token attribution, and it can be self-hosted from the experiential package on PyPI. An optional intelligence layer on the same traffic suggests cheaper models per prompt, improves cache hit rates, and fine-tunes a model the customer owns on its own traces.
| Attribute | Experiential — Open Source AI Gateway | LiteLLM — Open-Source LLM Gateway | OpenRouter — Unified LLM API Gateway | Requesty — AI Gateway | |
|---|---|---|---|---|---|
| Provider | |||||
| Founded | 2026 | 2023 | 2023 | 2023 | |
| Sells To | Developer | Enterprise, Small Business | Developer | — | |
| Pricing Model | Usage-based | Recurring, Software | Usage-based | — | |
| Ownership | Venture-backed private company | Open-Source, Venture Capital | Venture-backed private company | — |
Provider 
Founded 2026
Sells To Developer
Pricing Model Usage-based
Ownership Venture-backed private company
Provider 
Founded 2023
Sells To Enterprise, Small Business
Pricing Model Recurring, Software
Ownership Open-Source, Venture Capital
Provider 
Founded 2023
Sells To Developer
Pricing Model Usage-based
Ownership Venture-backed private company
Provider 
Founded 2023
Sells To —
Pricing Model —
Ownership —

Inference API