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What is Sakana Fugu Ultra?

Sakana Fugu Ultra is the advanced, performance-focused model in the Sakana Fugu platform, designed to coordinate multiple expert AI agents for difficult and high-stakes work. It is built for users who need stronger results on complex multi-step tasks than a single model or basic AI assistant can usually provide. Through one OpenAI-compatible API, Fugu Ultra dynamically selects and coordinates agents from a powerful model pool while presenting the experience as one model. This allows teams to use multi-agent intelligence without manually building agent workflows, assigning roles, or switching between different providers. Fugu Ultra is optimized for demanding use cases such as software engineering, code review, Kaggle competitions, paper reproduction, cybersecurity analysis, scientific problem solving, literature investigations, patent analysis, and autonomous research. The system is grounded in research-driven orchestration methods, including TRINITY and the Conductor, which focus on learning how to route tasks, coordinate agents, and create effective collaboration patterns. Compared with the standard Fugu model, Fugu Ultra uses a deeper expert pool to prioritize quality on harder problems. It is designed for workloads where precision, reasoning depth, completeness, and reliability are more important than low latency alone. Organizations can opt out of specific models or providers in the agent pool to meet data, privacy, compliance, procurement, or internal governance requirements. Fugu Ultra also includes fixed pay-as-you-go pricing for input, output, and cached input tokens, with higher rates for very long context usage. Sakana Fugu Ultra helps technical teams plug advanced multi-agent orchestration into existing workflows while reducing single-vendor dependency and improving performance on challenging AI tasks.

What is Fugu-Ultra v1.1?

Fugu-Ultra v1.1 is the upgraded multi-agent orchestration model created by Sakana AI, specifically engineered for complex coding challenges, agent-centric tasks, and advanced reasoning abilities. Rather than relying solely on a single model, it skillfully coordinates a range of state-of-the-art models, selecting and combining specialized agents that are optimally suited for specific tasks, all while maintaining a cohesive model interface. The recent orchestration enhancement in v1.1 introduces newer frontier models, yielding improved performance metrics across numerous benchmarks and achieving gains of up to 7.9 points over v1.0, with particularly remarkable results on ProgramBench and Terminal Bench 2.1. Furthermore, Fugu is now capable of integrating flawlessly within Claude Code through compatible endpoints, facilitating a collaborative ecosystem of models that operate seamlessly in user-friendly terminal environments for coding, debugging, reviewing, and executing scripts. Users can swiftly establish this integration with a simple one-command installer on both Ubuntu and macOS, while alternative manual setup options are available for Windows and other operating systems, thereby ensuring accessibility for a wide range of users. This innovative advancement not only optimizes workflows but also significantly boosts productivity by harnessing the unique strengths of multiple specialized agents, ultimately leading to more efficient software development practices. Such improvements reflect Sakana AI's commitment to enhancing the capabilities and usability of their orchestration models in response to user needs.

Media

Media

Integrations Supported

Sakana Fugu
Claude Code
Fugu-Ultra v1.1
OpenRouter
Sakana Fugu Ultra
Vercel AI Gateway

Integrations Supported

Sakana Fugu
Claude Code
Fugu-Ultra v1.1
OpenRouter
Sakana Fugu Ultra
Vercel AI Gateway

API Availability

Has API

API Availability

Has API

Pricing Information

$20 per month
Free Version
Free Trial Offered?

Pricing Information

$6 per 1M tokens (input)
$6 per 1M tokens (input), $36 per 1M tokens (output)
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Sakana AI

Date Founded

2023

Company Location

Japan

Company Website

sakana.ai/fugu/

Company Facts

Organization Name

Sakana AI

Date Founded

2023

Company Location

Japan

Company Website

sakana.ai/fugu-1-1-claude-code-interface/

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