sakana Fugu Ultra

Fugu Ultra by sakana excels in the Coding category, where it ranks #252 with a composite score of 40/100. 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... It is particularly strong in areas highlighted by its top benchmark performance and adoption metrics, making it suitable for both individual developers and enterprise teams looking for a reliable coding solution.

Fugu Ultra is priced at $5.00 per million input tokens and $30.00 per million output tokens (USD). Contact the provider for volume discounts and enterprise pricing. Pricing is competitive within the coding category and reflects the model's quality-to-cost ratio.

In the Coding category, Fugu Ultra holds rank #252 out of 378 models tracked. Its quality rank is #252 and adoption rank is #252. You can use our comparison tool at /compare to see detailed side-by-side metrics with specific alternatives. Key differentiators include its composite scoring across benchmarks, community sentiment, and real-world adoption rates.

Fugu Ultra has been evaluated across 5 different signals. Its strongest areas include Capabilities (100/100), Pricing (70/100), Context Window (95/100). These scores are derived from industry-standard benchmarks, community ratings, and real-world performance metrics. The composite score of 40/100 reflects a weighted combination of all tracked signals.

Fugu Ultra is a paid model, though some providers may offer trial credits or limited free tiers for evaluation. Check sakana's website for current free tier availability and promotional offers.

Fugu Ultra supports a 1,000K token context window (1,000,000 tokens total). That translates to roughly 750,000 words in a single prompt. This is large enough to process entire codebases, research papers, or long conversation histories in one shot.

Fugu Ultra can generate up to 128K output tokens (128,000 tokens) per response. That is roughly 96,000 words. This is enough for generating complete code files, detailed reports, or long-form content in a single response.

Fugu Ultra supports image understanding (vision), function/tool calling, structured JSON output, extended reasoning/chain-of-thought, web search, streaming responses. Function calling lets you integrate it with external APIs and tools programmatically. Vision support means it can analyze images, screenshots, and diagrams alongside text. These capabilities determine which workflows and integrations the model can handle natively.

Fugu Ultra was developed by sakana. It was released on June 24, 2026. You can access it through sakana's API. Check our provider page for all models from sakana and how they compare against each other.

Pick Fugu Ultra when you need a budget-friendly option for high-volume, simpler tasks where you prioritize cost over peak performance. If your task is straightforward text completion or classification, a cheaper model might give you 90% of the quality at a fraction of the price. Run a quick benchmark on your actual use case before committing.

You can access Fugu Ultra through sakana's API using standard HTTP requests or their official SDK. Most providers support OpenAI-compatible endpoints, so switching between models often requires changing just the model name in your API call. Streaming is supported for real-time token-by-token output. For production use, implement proper error handling, rate limiting, and cost monitoring.