Author's Description
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to...
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
Sakana: Fugu Ultra v2, released on September 10, 2026, is positioned as a high-performance model within Sakana AI's Fugu family, characterized by its multi-agent orchestration system. While demonstrating exceptional reliability with a 100% success rate across all benchmarks, its speed performance tends to be slower, ranking in the 18th percentile. Furthermore, the model is positioned at premium pricing levels, ranking in the 1st percentile for cost. Despite its slower response times and higher cost, Fugu Ultra v2 exhibits remarkable accuracy in several critical areas. It achieved perfect scores in Hallucinations, Reasoning, and Ethics, indicating a strong ability to acknowledge uncertainty, solve complex logical problems, and adhere to ethical principles. Its Coding performance is also very strong at 97.0% accuracy (96th percentile). Instruction Following and Email Classification show solid performance at 83.0% and 99.0% accuracy respectively. General Knowledge and Mathematics, while not top-tier, still demonstrate respectable accuracy at 99.5% and 93.0%. The model's key strengths lie in its high accuracy across various cognitive tasks, particularly in areas requiring precision and ethical understanding. Its primary weaknesses are its longer response times and premium pricing, which may impact its suitability for cost-sensitive or real-time applications.
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $5 |
| Completion | $30 |
| Input Cache Read | $0.5 |
| Web Search | $10000 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
Sakana AI
|
Sakana AI | sakana/fugu-ultra-v2-20260911 | 1M | $5 / 1M tokens | $30 / 1M tokens |
Benchmark Results
| Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
|---|
Other Models by sakana
|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| Sakana: Fugu Max | Sep 10, 2026 | — | 1M |
Text input
Image input
File input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| Sakana: Sakana Namazu | Aug 10, 2026 | — | 262K |
Text input
Image input
File input
Text output
|
— | — | $$$$$ |
| Sakana: Fugu Ultra | Jun 23, 2026 | — | 1M |
Text input
Image input
Text output
|
★ | ★★★★★ | +$$$$$ |