# Neon AI Gateway

Access frontier and open-source models through a single API.

[Parent index](https://neon.com/docs/llms.txt)

- [AI Gateway authentication](https://neon.com/docs/ai-gateway/authentication.md): How Neon credentials work with AI Gateway
- [AI Gateway prepaid credits](https://neon.com/docs/ai-gateway/prepaid-credits.md): Buy credits, understand pricing and limits, and manage your balance for the Neon AI Gateway
- [AI Gateway troubleshooting](https://neon.com/docs/ai-gateway/troubleshooting.md): Common errors and how to fix them
- [Anthropic Messages API](https://neon.com/docs/ai-gateway/anthropic-messages.md): Use the Anthropic SDK with Neon AI Gateway
- [Chat completions](https://neon.com/docs/ai-gateway/chat-completions.md): The OpenAI-compatible unified endpoint
- [Decisions](https://neon.com/docs/ai-gateway/decisions.md): Answer questions about text, JSON, or images with System One decision models
- [Embeddings](https://neon.com/docs/ai-gateway/embeddings.md): The OpenAI-compatible embeddings endpoint
- [Gemini API](https://neon.com/docs/ai-gateway/gemini.md): Use the Google Gemini API with Neon AI Gateway
- [Get started with Neon AI Gateway](https://neon.com/docs/ai-gateway/get-started.md): Make your first inference request in minutes
- [Model reference](https://neon.com/docs/ai-gateway/models.md): How to call models through AI Gateway, with the endpoints, limits, and rules that apply
- [Neon AI Gateway](https://neon.com/docs/ai-gateway/overview.md): One API for open-weight and foundation models from OpenAI, Google, and more. Built into your Neon project.
- [Neon AI Gateway data retention](https://neon.com/docs/ai-gateway/data-retention.md): What Databricks and model providers retain when you use Neon AI Gateway
- [OpenAI Responses API](https://neon.com/docs/ai-gateway/openai-responses.md): Use the OpenAI Responses API with Neon AI Gateway