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OnAPI

OnAPI is an AI gateway service intended to let developers route text, image, video, and code requests to multiple model providers through a single API key.

Tags
AI APISAAS
Last Updated Oct 21, 2026

About

OnAPI is an AI infrastructure service designed to act as a single entry point for multiple AI models. Its stated purpose is to let developers call a range of large language and generative models for text, images, video, and code through one unified API key, rather than managing separate accounts, keys, and billing relationships with each individual provider.

At the time AOYII reviewed it, the official OnAPI website at onapi.ai was not reachable and returned a Cloudflare "521: Web server is down" error, meaning the origin server was not responding to requests. Because of this, the details below reflect the product's publicly described intent and could not be verified against the vendor's own documentation. Pricing, plan tiers, and the exact list of supported models are not publicly listed on the pages we were able to review, and readers should confirm current details directly on the official site.

Key Features

Unified API access: The service is described as offering one API endpoint and key that fronts multiple AI providers, reducing integration work for teams that use several models.
Multiple modalities: OnAPI is positioned to handle text generation, image generation, video generation, and code-related tasks through the same interface.
Multi-provider model selection: The product is intended to expose models from major providers, allowing developers to choose or switch models without rewriting their application code.
Single billing relationship: A gateway of this type typically consolidates usage across providers into one account and one invoice, which simplifies cost tracking.
Developer-oriented workflow: The service is aimed at API-first usage, meaning developers integrate it into their own applications rather than using a standalone consumer interface. Note: the above features are based on the product's public positioning; the official site was unavailable during review and could not be used to confirm them.

Pricing & Fees

  • Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans.
  • Site availability: At the time of review, onapi.ai returned a "Web server is down" error (code 521), and no documentation or pricing pages could be accessed.
  • Access method: The product is designed to be consumed as an API by developers, not as a browser-based consumer app.

Who It's For

OnAPI is aimed at developers and engineering teams that build applications on top of multiple AI models and want a single integration point instead of separate provider APIs. Typical users include startup engineers prototyping across different language and video models, indie developers building AI-powered products, and technical teams looking to consolidate API keys and billing. Because the service could not be fully verified at review time, prospective users should test it against their specific requirements before committing.

FAQ

What is OnAPI?OnAPI is an AI gateway service intended to provide a single API key and endpoint for accessing multiple AI models across text, image, video, and code tasks.

How much does OnAPI cost?Pricing is not publicly listed on the pages we reviewed; check the official site for current plans.

Which AI models does OnAPI support?The product is publicly described as fronting models from several major providers, but the official site was unavailable during our review, so the supported model list could not be confirmed.

Is OnAPI currently available?At the time of this review, onapi.ai returned a "Web server is down" error, so availability and service status should be verified directly on the official site.

Is OnAPI suitable for non-developers?It is designed as an API-based developer tool, so it assumes comfort with integrating and calling APIs rather than offering a consumer-facing interface.