Fugu-Ultra v1.1

Fugu-Ultra v1.1

Sakana AI
Inkling

Inkling

Thinking Machines Lab
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+

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About

Fugu-Ultra v1.1 is Sakana AI’s upgraded multi-agent orchestration model for complex coding, agentic work, and advanced reasoning. Rather than relying on one model, it dynamically coordinates a diverse pool of frontier models, selecting and combining specialized agents for each task while presenting the system through a single model interface. The v1.1 orchestration upgrade incorporates newer frontier models and improves performance across every tracked benchmark, with gains of up to 7.9 points over v1.0 and particularly strong results on ProgramBench and Terminal Bench 2.1. Fugu can now be used directly inside Claude Code through Claude Code-compatible endpoints, bringing a coordinated team of models into familiar terminal workflows for writing, debugging, reviewing, and executing code. A one-command installer configures the integration on Ubuntu and macOS, while manual setup is available for Windows and other environments.

About

Inkling is an open-weights multimodal AI model from Thinking Machines designed as a customizable foundation model for developers, researchers, and enterprises. The model is a Mixture-of-Experts transformer with 975 billion total parameters, 41 billion active parameters, and support for context windows up to 1 million tokens. Inkling was trained from scratch on text, images, audio, and video, giving it native capabilities across reasoning, coding, agentic tool use, vision, audio, factuality, and instruction following. It is built with controllable thinking effort so users can balance performance, latency, and token efficiency for different workloads. The model is available for fine-tuning on Tinker, with playground access, API availability through ecosystem partners, and full weights published on Hugging Face. Built for customization, Inkling gives teams an open-weights base model for building domain-specific AI systems, multimodal agents, coding workflows, research tools, and more.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Research engineering teams that need multiple frontier models coordinated inside familiar terminal-based coding workflows

Audience

AI developers, researchers, model fine-tuning teams, enterprise AI groups, agent builders, coding tool makers, multimodal AI teams, infrastructure providers, and organizations that need open-weights models for customization, long-context reasoning, vision, audio, tool use, and specialized AI applications

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

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

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Fugu-Ultra v1.1 is really interesting from a developer’s point of view because it feels like a different approach from the usual “one giant model does everything” setup. Instead, it acts more like an intelligent orchestration layer that can route work across multiple frontier models and agent patterns. That makes a lot of sense for coding and agentic workflows. Real development tasks are messy, and different parts of the job need different strengths: planning, repo search, debugging, terminal work, reasoning, code generation, and cleanup. I also like that Sakana added a Claude Code-compatible interface. Being able to use Fugu directly inside developer workflows makes it feel much more practical than something you only test in a browser or benchmark page. The benchmark gains are impressive too. If the reported improvements on coding and terminal tasks hold up in real projects, Fugu-Ultra v1.1 could be a strong option for developers building serious coding agents.

Cons

  • The main downside is that orchestration adds complexity. When a system is coordinating multiple models behind the scenes, I want strong transparency, logging, debugging tools, and predictable behavior before I trust it deeply in production. I would also want to test latency and cost carefully. Multi-agent systems can be powerful, but they can also become expensive or slow if they overthink simple tasks.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Sakana AI
Founded: 2023
Japan
sakana.ai/fugu-1-1-claude-code-interface/

Company Information

Thinking Machines Lab
Founded: 2025
United States
thinkingmachines.ai/

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Categories

Categories

Integrations

Model Context Protocol (MCP)
Sakana Fugu
Sakana Fugu Ultra
Tinker

Integrations

Model Context Protocol (MCP)
Sakana Fugu
Sakana Fugu Ultra
Tinker
Claim Fugu-Ultra v1.1 and update features and information
Claim Fugu-Ultra v1.1 and update features and information
Claim Inkling and update features and information
Claim Inkling and update features and information