Sakana: Fugu Ultra
Analysis Summary
Sakana Fugu Ultra is presented as a multimodal model with a 1M context window, vision, tool use, and function calling. Those features could support long-document review, image-aware assistance, and connected workflows that need to combine substantial context with external actions.
The record provides no model-specific benchmark results for reasoning, coding, agentic reliability, or instruction following. Its high listed pricing further raises the cost of adopting an unverified model for broad client traffic. A focused evaluation may be justified for long-context multimodal tasks, but Design for Online would require clear quality evidence and measured tool reliability before using it for high-stakes content, engineering, or autonomous operations.
Assessed August 9, 2026
Editorial notes
Fugu Ultra offers a 1M context window, vision, tool use, and function calling, but its high listed pricing and lack of benchmark data leave production quality unverified.
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DFO Verdict
Fugu Ultra offers a 1M context window, vision, tool use, and function calling, but its high listed pricing and lack of benchmark data leave production quality unverified.
How Sakana: Fugu Ultra compares
Its 1M-token context window is larger than 86% of the models we list. At $5.00 per million input tokens it is cheaper than 8% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on content. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $30.00 | $0.030000 |
What would Sakana: Fugu Ultra cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 688 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Sakana: Fugu Ultra for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout Sakana: Fugu Ultra
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..
Frequently asked questions about Sakana: Fugu Ultra
How much does Sakana: Fugu Ultra cost?
Sakana: Fugu Ultra costs $5.00 per million input tokens and $30.00 per million output tokens.
What is the context window of Sakana: Fugu Ultra?
Sakana: Fugu Ultra has a context window of 1,000,000 tokens (1M).
What can Sakana: Fugu Ultra do?
Sakana: Fugu Ultra supports image/vision input, tool use, and function calling.
Who created Sakana: Fugu Ultra?
Sakana: Fugu Ultra is developed by Sakana and was released on June 24, 2026.
