The model field selects which Mixedbread model handles a request. Each model has its own capabilities, context window, output limit, and supported tools.

Available modelsLink to section

Specialized search model

Toast 1

Built for knowledge-intensive questions, multi-step retrieval, and evidence synthesis. Toast 1 can work with any backend exposed through function calling and is most deeply integrated with Mixedbread Search.

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Model ID

toast-1Copy model ID to clipboard

Input

Text

Output

Text

Context window

131K tokens

Max output

4K tokens

Supported tools

View tools guide

• Function calling
• store_search
• store_grep
• store_list_chunks
• store_metadata_facets
• list_stores

The context window includes input messages, tool definitions, tool results, and generated output. max_completion_tokens limits generated output.

Chat Completions defaults to toast-1 when model is omitted.