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Fugu Ultra v1.1

Fugu Ultra v1.1 is positioned as an enhanced multi-agent orchestration model designed for intricate coding tasks, agentic functions, and sophisticated reasoning, drawing on coordinated specialist behaviors rather than relying on a single monolithic network. Third-party tracking attributes the model to Sakana AI and characterizes it as a proprietary reasoning-focused system, which is consistent with its intended role in decomposing complex software and decision workflows into smaller cooperating steps. BenchLM explicitly notes the profile is tracked but not publicly ranked, with zero sourced benchmark rows currently available, so any performance comparison should be treated as premature until Sakana publishes formal evaluations.

In practical terms, Fugu Ultra v1.1 fits workloads that benefit from agentic orchestration, such as multi-step code generation, tool-augmented reasoning, and structured problem solving where several sub-tasks must be coordinated toward a single outcome. The long context window makes it suitable for projects that require reasoning over large codebases or extensive documentation in a single pass, while the proprietary, hosted deployment through NanoGPT removes the need for local infrastructure. As the Sakana fugu line matures, expect the orchestration approach to become the model's distinguishing selling point, with future updates likely to refine how specialist agents collaborate and how external tools are invoked within a reasoning trace.

NanoGPTsakana/fugu-ultra-v1.1fugu

Quick Info

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Provider
NanoGPT
Model key
sakana/fugu-ultra-v1.1
Release date
Jul 24, 2026
Last updated
Jul 24, 2026
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$5.25
Output token cost
$31.50

Limits

Input tokens
1,000,000 tokens
Output tokens
16,384 tokens
Context window
1,000,000 tokens

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