Fugu Ultra 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 route...
Model details →Sakana: Fugu Ultra vs Anthropic Claude Sonnet Latest
Anthropic Claude Sonnet Latest wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
This model always redirects to the latest model in the Anthropic Claude Sonnet family.
Model details →Side-by-side comparison
| Capability | Sakana: Fugu Ultra | Anthropic Claude Sonnet Latest | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1M | 1M | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $5.00 | $2.00 | 🏆 Anthropic Claude Sonnet Latest |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $30.00 | $10.00 | 🏆 Anthropic Claude Sonnet Latest |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Sakana: Fugu Ultra better than Anthropic Claude Sonnet Latest?
Anthropic Claude Sonnet Latest wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Sakana: Fugu Ultra and Anthropic Claude Sonnet Latest?
Input: $5.00 vs $2.00 per 1M tokens. Output: $30.00 vs $10.00 per 1M tokens.
What context windows do Sakana: Fugu Ultra and Anthropic Claude Sonnet Latest support?
Sakana: Fugu Ultra supports up to 1M tokens. Anthropic Claude Sonnet Latest supports up to 1M tokens.
Do both Sakana: Fugu Ultra and Anthropic Claude Sonnet Latest support tool calling?
Sakana: Fugu Ultra: yes. Anthropic Claude Sonnet Latest: yes.
Compare Sakana: Fugu Ultra with other models
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