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Description

Cursor has introduced Composer 2.5, a next-generation AI coding assistant built to deliver stronger reasoning, better collaboration, and improved reliability during software development tasks. The upgraded model performs better on long-running coding workflows and can manage complicated instructions with greater consistency than earlier Composer versions. Cursor expanded the training process by scaling compute resources, generating more advanced reinforcement learning environments, and refining behavioral traits that improve the developer experience. One of the key innovations in Composer 2.5 is its targeted textual feedback system, which helps the model learn from localized mistakes inside long coding trajectories instead of relying only on broad reward signals. This training method allows the AI to improve coding style, communication quality, and tool usage accuracy in a more focused way. The company also increased the amount of synthetic coding data by 25 times compared to Composer 2, giving the model exposure to more difficult and realistic programming tasks. During development, the system demonstrated sophisticated reasoning abilities by uncovering hidden implementation details and reverse-engineering deleted functionality inside synthetic environments. Composer 2.5 additionally uses advanced distributed training methods such as Sharded Muon and dual mesh HSDP to optimize large-scale model training performance. Available directly inside Cursor, the model comes in both standard and fast variants with different pricing tiers designed for developers, teams, and enterprise-scale engineering workflows.

Description

Sakana Fugu Ultra is a performance-optimized multi-agent AI model designed for hard technical, research, security, and analytical workloads. It coordinates a deeper pool of expert agents than the standard Fugu model, allowing it to focus on maximum answer quality for complex tasks. The model is available through the same OpenAI-compatible API as Sakana Fugu, making it easier to integrate into existing tools, developer workflows, and AI applications. Fugu Ultra is especially useful for coding, advanced code review, Kaggle competitions, paper reproduction, cybersecurity assessments, literature reviews, patent research, and long-running autonomous workflows. Instead of requiring users to choose individual models or define agent roles, Fugu Ultra dynamically assembles and coordinates the agents that are best suited for each task. Its approach is grounded in learned model orchestration research, including TRINITY and the Conductor, which explore how multiple AI systems can collaborate more effectively. Organizations can also control which providers or models participate in the agent pool to support privacy, compliance, and internal policy requirements. Fugu Ultra is positioned for high-value tasks where deeper analysis, stronger reasoning, and better reliability matter more than speed alone. Sakana Fugu Ultra gives developers, researchers, and enterprises a way to use frontier-level multi-agent intelligence through one managed endpoint.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

.NET Yes 
Bash Yes 
C Yes 
CSS Yes 
Dart Yes 
Fugu-Ultra v1.1 No 
Grok Build Yes 
Java Yes 
JavaScript Yes 
Kubernetes Yes 
Objective-C Yes 
PHP Yes 
PowerShell Yes 
Python Yes 
SQL Yes 
Sakana Fugu No 
Scala Yes 
Swift Yes 
TypeScript Yes 
Vercel AI Gateway No 

Integrations

.NET No 
Bash No 
C No 
CSS No 
Dart No 
Fugu-Ultra v1.1 Yes 
Grok Build No 
Java No 
JavaScript No 
Kubernetes No 
Objective-C No 
PHP No 
PowerShell No 
Python No 
SQL No 
Sakana Fugu Yes 
Scala No 
Swift No 
TypeScript No 
Vercel AI Gateway Yes 

Pricing Details

$0.50/M input
$0.50/M input and $2.50/M output tokens
Free Trial No 
Free Version Yes 

Pricing Details

$20 per month
Free Trial No 
Free Version No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Cursor

Founded

2022

Country

United States

Website

cursor.com

Vendor Details

Company Name

Sakana AI

Founded

2023

Country

Japan

Website

sakana.ai/fugu/

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