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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 Muse Ember?

Muse Ember is an efficient multimodal artificial intelligence model developed by Meta Superintelligence Labs for autonomous agent execution, coding assistance, complex reasoning, and large-scale business automation. The model is designed to handle the frequent, structured operations performed by AI agents, including tool calls, information retrieval, workflow routing, document extraction, and software development subtasks. It supports a context window of one million tokens and can generate up to 512,000 output tokens, allowing applications to process large repositories, extensive documents, and complex task histories. Muse Ember natively processes text, images, audio, video, and PDF content, enabling multimodal analysis without requiring separate models for each supported input type. Its visual understanding capabilities allow agents to interpret screenshots, charts, scanned documents, and interface elements while supporting computer-based automation workflows. Software engineering capabilities include reading source files, running tests, analyzing repositories, implementing targeted fixes, and completing programming tasks within autonomous coding environments. The model also supports enterprise automation workflows that involve retrieving information, evaluating records, executing tools in sequence, and updating data across connected business applications. Meta trained Muse Ember using Muse Wonder Full, creating a specialized model intended to combine strong reasoning capabilities with lower inference costs for frequently repeated tasks. Published evaluation results include 37.8% on AutomationBench-AA, 61.6% on Agents' Last Exam, 40.9% on Terminal-Bench 4.0, and 80.6% on PerceptionBench with tools. Muse Ember can be combined with larger models such as Muse Wonder and Muse Spark, allowing advanced models to handle planning and complex decisions while Ember performs high-volume execution tasks.

Media

Media

Integrations Supported

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

Integrations Supported

Google Cloud Platform
Meta AI
Muse
Muse Code

API Availability

Has API

API Availability

Has API

Pricing Information

$20 per month

Pricing Information

$0.10 per 1M tokens (input)
$0.10 per million input tokens and $0.50 per million output tokens

Supported Platforms

SaaS

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Sakana AI

Date Founded

2023

Company Location

Japan

Company Website

sakana.ai/fugu/

Company Facts

Organization Name

Meta

Date Founded

2004

Company Location

United States

Company Website

research.meta.ai/blog/muse-ember

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

Large Language Models

Not specified

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

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