Fugu

Fugu is a multi-agent model for routing expert agents across complex analytical tasks. It is the first version of its line in the registry, released on 2026-06-15 by Sakana AI. Fugu has a context window of 1,000,000 tokens and a maximum output of 1,000,000 tokens. Weights are not open. It supports reasoning mode and tool calling. It accepts image and text inputs and returns text. Price starts at $2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.25 per million tokens. It is served by 7 hosts.

First version of its line in the registry.

• ·Routes expert agents for complex analytical tasks
• ·1M token context window and output
• ·Supports reasoning mode and tool calling
• ·Accepts image and text inputs
• ·Served by 7 hosts for availability

• Reach for it for complex analytical tasks needing multi-agent routing
• Reach for it for tasks with very long context up to 1M tokens
• Reach for it for workflows requiring tool calling and reasoning
• Reach for it for mixed image and text inputs

7 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window size?

The context window is 1,000,000 tokens.

Are the weights open?

No, the weights are not open.

What is the price?

From $2.00 per million input tokens and $6.00 per million output tokens, with cached input at $0.25 per million tokens.