Cat Jam
An inference model released in stealth mode on AI Gateway, aimed at coding and agentic tasks, emphasizing low-latency inference, supporting function calling and structured outputs, offering five selectable reasoning effort levels, and accepting text input only.
Timeline (last 90 days)
Running `/models` in OpenCode brings up the Select Model list, and in the video demonstration the list contained 9 free models: Big Pickle, Space Bunny, Cat Jam, Longcat 2.5 Preview, Step 5 Preview, Mimo v2.6 Flash, Muse Spark 1.3, and 2 Nvidia Nemotron models.
Cat Jam is a reasoning model for programming and agentic tasks, focused on low-latency reasoning.
Cat Jam supports function calling and structured output, and returns both reasoning text and the final answer.
Cat Jam offers five levels of reasoning effort: low, medium, high, xhigh, and max.
Cat Jam accepts only text input and does not support multimodal input such as images.
Cat Jam is a stealth model, free for all users during the stealth period.
Cat Jam's access channels include the AI SDK, OpenAI-compatible Chat Completions and Responses APIs, the Anthropic-compatible Messages API, and coding agents connected to AI Gateway.
When calling Cat Jam, the model name stealth/cat-jam is used.
Whether Cat Jam will become paid after the free period ends and how it will be priced are currently not stated officially.
Cat Jam does not provide zero data retention (ZDR), and the official explanation states that prompts may be retained for security reasons.
All Facts (10)
Running `/models` in OpenCode brings up the Select Model list, and in the video demonstration the list contained 9 free models: Big Pickle, Space Bunny, Cat Jam, Longcat 2.5 Preview, Step 5 Preview, Mimo v2.6 Flash, Muse Spark 1.3, and 2 Nvidia Nemotron models.
50%UnverifiedCat Jam is a reasoning model for programming and agentic tasks, focused on low-latency reasoning.
50%UnverifiedCat Jam supports function calling and structured output, and returns both reasoning text and the final answer.
50%UnverifiedCat Jam offers five levels of reasoning effort: low, medium, high, xhigh, and max.
50%UnverifiedCat Jam accepts only text input and does not support multimodal input such as images.
50%UnverifiedCat Jam's access channels include the AI SDK, OpenAI-compatible Chat Completions and Responses APIs, the Anthropic-compatible Messages API, and coding agents connected to AI Gateway.
50%UnverifiedWhen calling Cat Jam, the model name stealth/cat-jam is used.
50%UnverifiedWhether Cat Jam will become paid after the free period ends and how it will be priced are currently not stated officially.
50%UnverifiedCat Jam does not provide zero data retention (ZDR), and the official explanation states that prompts may be retained for security reasons.
50%UnverifiedCat Jam is a stealth model, free for all users during the stealth period.
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