Anthropic: Claude Opus Latest

Anthropic Claude Opus Latest is a text generation model from Anthropic, exposed on api14 under the model id ~anthropic/claude-opus-latest. As the name and provider description indicate, this entry always redirects to the latest model in the Claude Opus family, so a request sent to this id is served by whichever Opus model Anthropic currently treats as newest. That behaviour is worth knowing up front: you get the vendor's current Opus offering without changing your integration, but the exact underlying model can change over time.

On the input side the model accepts text, images and files, and it returns text only. Its context window is 1,000,000 tokens, which is large enough to hold entire codebases, long reports or multi document sets in a single request. The maximum output is 128,000 tokens, so long-form answers, extended reasoning traces and sizable generated files are all within range. Request parameters include include_reasoning, reasoning, reasoning_effort and verbosity, alongside max_tokens and max_completion_tokens for controlling output length.

Those capabilities point to a few practical patterns. Large context plus file and image input suits repository-wide code review, contract and policy analysis, and question answering over document collections where retrieval alone tends to lose cross-references. The reasoning parameters matter for tasks where you want the model to work through a problem before answering, such as debugging, data analysis or multi step planning, while verbosity lets you tune how much explanation comes back. Structured outputs and response_format are useful when the result feeds a downstream parser rather than a human reader. Tool and function calling support makes the model a reasonable choice for agents that need to query APIs, run searches or chain steps together.

Calling it through api14 works the same way as any other OpenAI-compatible endpoint: point your client at the api14 base URL, send a chat completions request, and set the model field to ~anthropic/claude-opus-latest. Supported parameters you can pass in the request body include tools, tool_choice, structured_outputs, response_format, stop, max_tokens, max_completion_tokens, reasoning, reasoning_effort, include_reasoning and verbosity. Existing OpenAI SDK code typically needs only the base URL, API key and model id changed.

The main caveat is the redirect itself. Because the id tracks the latest Opus release, behaviour, output style and parameter handling can shift when Anthropic ships a new version, which is awkward if you need strictly reproducible results. In that case pinning a specific dated model id is the safer route. For workloads that do not need a million token context, image or file input, or a 128,000 token output ceiling, a smaller model will usually be the more sensible default.