AI GateWay

4i.codes, also branded as AI GateWay, is an AI API gateway service that provides developers with access to multiple AI models through a single endpoint and key. It is compatible with OpenAI and Anthropic protocols by simply changing a single base URL. The platform offers capabilities including text generation, structured output, tool calling, and long-context features.

The service uses a public pricing formula consisting of the official token price multiplied by a real FX discount and a tier multiplier. The company states it adds no markup, and every request log can be verified line-by-line by request ID in the console to ensure transparency.

Developers can get started by changing one base_url in their code, which keeps their existing code untouched. The platform is fully compatible with OpenAI and Anthropic official protocols, allowing SDKs and frameworks to work as before with a single line of configuration.

The platform supports multiple models through a unified endpoint, offering features like /v1/chat/completions, /v1/responses, /v1/messages, /v1/images/generations, and /v1/images/edits. A live availability list is available in the console for users to check current model access.

The service claims a 99.97% 30-day uptime and a median latency of 86ms. It also offers a balance that never expires and provides per-request logs that can be audited to verify costs and usage line-by-line.

The platform is designed for personal developers, technical startup teams, enterprise applications, and academic researchers. It aims to simplify AI integration by handling complex routing and billing so developers can focus on building their applications.

The company states it has been serving developers since 2025. It operates as a small team focused on AI infrastructure, aiming to create a stable and transparent access layer that reduces the need for developers to manage multiple platforms.

Users can contact the business via email at [email protected] for product feedback and bug reports. Additional contact methods include QQ groups, a Telegram channel, a Discord server, and a developer discussion group for community support.

The service promises 100% line-item reconciliation, meaning invoices reconcile exactly as requested without hidden fees. Users have reported that finance teams stopped chasing them because the final amount is itemized as official token price × real FX discount × tier multiplier.

Some users on Reddit mention that switching to the gateway required changing only one base_url, making migration nearly zero-cost. The unified endpoint allows developers to avoid the friction of registering with multiple platforms or dealing with different account restrictions.

The platform claims to offer a 0% markup on official pricing, ensuring that the cost reflects the actual upstream usage. This transparency is highlighted as a core promise to prevent hidden truncation or model swapping that resellers might use.

The website states that the balance never expires, allowing users to accumulate credits without time limits. This feature is part of the broader commitment to making the billing process straightforward and predictable for developers.

The service is described as protocol compatible, supporting both OpenAI and Anthropic protocols natively. This compatibility allows developers to use their existing tools and agents without significant code changes.

The platform provides a monitoring dashboard and developer docs to help users manage their integrations. It also includes a live availability list in the console to keep users informed about which models are currently accessible.

The official website of AI GateWay is 4i.codes.