# Changelog > Notable changes to the API surface, models and documentation. _Source: https://aiprimetech.io/docs/resources/changelog/ · Home > Docs > Resources_ > Model ids are pinned. A published id keeps its behaviour; new versions arrive as new ids, and retirements are announced here before they take effect. ## Documentation - Full docs site published: getting started, API reference, tool and integration guides, SDK examples, billing and resources. - Every page now serves a Markdown mirror at the same path with a `.md` suffix, plus copy-for-LLM and ask-in-an-assistant actions. - [llms.txt](/llms.txt) and [llms-full.txt](/llms-full.txt) extended to cover the docs tree. ## API - `/v1/messages` — Anthropic Messages format, streaming and tool use. - `/v1/chat/completions` — OpenAI Chat Completions format against the same models. - `/v1/models` — model discovery. - Machine-readable schema at [/openapi.json](/openapi.json). ## Models The current catalog is always listed on [Models](/docs/getting-started/models/) and served live from [/v1/models](/docs/api-reference/models-endpoint/). Treat the endpoint as authoritative over any documentation page. - [Models](https://aiprimetech.io/docs/getting-started/models/) — Current catalog - [API overview](https://aiprimetech.io/docs/api-reference/overview/) — Endpoint list --- _ClaudeAPIKey.dev is an independently operated, Anthropic-compatible API gateway. Not affiliated with Anthropic._