Name: Fugu Ultra
Brand: Sakana AI

Fugu Ultra by Sakana AI — Product Research | aVenture

Fugu Ultra coordinates a deeper pool of expert agents through the same OpenAI-compatible Sakana Fugu API, prioritizing answer quality on difficult multi-step problems such as automated research, paper reproduction, cybersecurity analysis, and literature or patent investigations.

Sakana AI reports that Fugu Ultra matches or rivals frontier models including Anthropic Fable 5 and Mythos Preview on benchmarks such as SWE-Bench Pro, GPQA-D, and TerminalBench while avoiding single-provider dependency and export-control risk.

Fugu Ultra - Direct Competitors

Attribute	Fugu Ultra	Cloudflare AI Gateway	LiteLLM — Open-Source LLM Gateway	LLM Gateway and Observability	OpenRouter — Unified LLM API Gateway	Requesty — AI Gateway
Provider	Sakana AI sakana.ai$406.6M disclosed funding · Series B	Cloudflare cloudflare.com$332.2M disclosed funding · Public	LiteLLM litellm.ai$2.1M disclosed funding · Seed	Portkey AI portkey-ai.us$3M disclosed funding	OpenRouter openrouter.ai$8.2B disclosed funding · Series B	Requesty requesty.ai
Founded	2023	2009	2023	2023	2023	2023
Sells To	Enterprise, Government	Enterprise, Small Business	Enterprise, Small Business	Enterprise	Developer	—
Pricing Model	B2B Subscription	Recurring, SaaS, Usage-based	Recurring, Software	Recurring, SaaS	Usage-based	—
Ownership	Venture-backed private company	Private Equity, Public, Venture Capital	Open-Source, Venture Capital	Venture Capital	Venture-backed private company	—