Sakana Chat

Sakana Chat is the conversational product from Sakana AI, a Tokyo research company. It gives users a direct way to try the company's models without going through an API. Two model families are available: Fugu Max, an orchestrator that routes each prompt to a suitable open model, and Namazu, a Japanese-focused model with agentic behaviour. The chat adds practical tools around the model, including sandboxed Python execution, file attachments, a preview panel for generated documents, translation features, and a memory system that carries context between conversations.

Key Features

• Fugu Max, an orchestrator model that draws on a pool of open models and directs each prompt to the one that fits it.
• Namazu, a model built for Japanese responses with agentic capabilities and web search and code execution built in.
• A thinking mode toggle that lets you turn on deeper reasoning for a response.
• Sandboxed Python code execution for calculations, data processing, and file generation.
• An output preview panel that renders HTML as it would look and displays Word and slide documents for review.
• Attachments: images work with every model, and PDFs and Office files can be summarized or analyzed.
• Memory that carries details such as your role, current project, and preferred answer format into later chats, with a My Fish view that shows what is remembered.

Who is it for

• People who want to try Sakana's Fugu and Namazu models without setting up API access.
• Japanese-speaking users who need a chat model tuned for their language.
• Analysts and office workers who need documents summarized, analyzed, or turned into slides.
• Developers and researchers who want to test model behaviour before integrating it.

What can you do with Sakana Chat

• Chat with Fugu Max or Namazu and switch models when a task calls for a different style.
• Run Python in the sandbox to calculate results, process data, or create a file.
• Attach an image, PDF, or Office document and ask for a summary or analysis.
• Turn a document into a slide deck and review it in the preview panel.
• Translate text, check a translation, or ask questions about it with Sakana Translate.
• Store context in memory and review or delete it later in settings.

How does Sakana Chat work

1. Open the chat and sign in to start a conversation.
2. Pick a model from the list, or keep the default, and turn thinking mode on if the task is complex.
3. Type a request, or attach an image, PDF, or Office file.
4. Read the answer, open the preview panel for generated files, and ask for revisions in the same thread.
5. Manage stored memories in settings, where you can review them or turn the feature off.

Pricing

Check the official website for current pricing and plan details.

FAQ

Is Sakana Chat free?

Sakana AI promotes the chat as a free way to try its models, and the official pages do not list subscription tiers or token prices.

Which models does Sakana Chat use?

It offers Fugu Max, an orchestrator that selects among open models, and Namazu, which is tuned for Japanese and includes web search and code execution.

Can Sakana Chat run code?

Yes. The models can run Python in a sandbox to perform calculations, process data, and generate files.

Can I upload files?

Yes. Images work with all models, and PDFs and Office files can be summarized or analyzed, including workflows that turn a document into slides.

What is memory in Sakana Chat?

Memory carries details such as your role, project, and preferred formatting into later chats. You can view stored memories in settings or turn the feature off.

Is there a translation feature?

Yes. Sakana Translate adds translation, proofreading, and question-and-answer tools inside the chat.