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Fugu Ultra v2 🆕 New

by Sakana AI · Text & Chat · Code · AI Agents

Multi-agent orchestration flagship · DeepSWE 74.3 (edges GPT-6 Astra) · Chartography 48.3 (2× Opus 5) · best-or-tied on 5/8 benchmarks · 1M context.

97/100AIVerso score
#4 of 49in Text & Chat
$5/$30 per 1M tokensStarting price
NoFree tier
Try Fugu Ultra v2 →Compare with alternatives →

At a glance

ProviderSakana AI
CategoryText & Chat, Code, AI Agents
Starting price$5/$30 per 1M tokens
Pricing details$5/$30 per 1M
Free tierNo
API accessYes
Open sourceNo
Context window1M tokens
Mobile appNo

Key facts

Capability ratings

Math & Logice.g. AIME, MATH-500
94
Programminge.g. SWE-bench, LiveCodeBench
93
Reasoninge.g. GPQA, ARC
96
Knowledgee.g. MMLU-Pro
92
Long Contexte.g. MRCR, needle tests
95
Instruction Followinge.g. IFEval
95
Agent Capabilitye.g. Terminal-Bench, tool use
97

AIVerso capability ratings (0–100), an editorial summary informed by public benchmark results. Higher is better.

Features

✗ Image generation
✗ Video generation
✗ Native audio model
✓ Web search
✗ Voice mode (app)
✓ PDF analysis

Strengths

Top-tier AIVerso score (97/100)
Versatile — covers Text & Chat, Code, AI Agents
Large 1M token context window
Built-in web search
API access for developers

Limitations

No free tier
Closed model — cannot be self-hosted
No official mobile app

Best alternatives to Fugu Ultra v2

Claude Fable 5.1
Anthropic · $10/$50 per 1M tokens — Higher score (99 vs 97)
99
GPT-6 Astra
OpenAI · From $20/mo (Plus) — Higher score (98 vs 97)
98
Gemini 3.1 Pro
Google · Free – $20/mo · free tier — Has a free tier
96
MiMo-V2.6-Pro
Xiaomi · Free (open weights) · $0.44/$0.87 per 1M · free tier — Has a free tier
96
Kimi K3
Moonshot AI · Free – API · free tier — Has a free tier
96

🔗 Comparisons & guides

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❓ Frequently Asked Questions

Is Fugu Ultra v2 free?

No, Fugu Ultra v2 has no free tier. Pricing: $5/$30 per 1M tokens (details: $5/$30 per 1M).

What are the best alternatives to Fugu Ultra v2?

The highest-rated AI chatbots & text models from other providers on AIVerso are Claude Fable 5.1 (99/100), GPT-6 Astra (98/100), Gemini 3.1 Pro (96/100).

Does Fugu Ultra v2 have an API?

Yes, Fugu Ultra v2 can be used via an API.

Is Fugu Ultra v2 open source?

No, Fugu Ultra v2 is a closed, proprietary model from Sakana AI.

How does AIVerso rate Fugu Ultra v2?

Fugu Ultra v2 scores 97/100 on AIVerso and ranks #4 of 49 in Text & Chat. Scores combine public benchmark results, features and pricing; commissions never influence them.

How we rate: Scores and capability ratings are based on public benchmarks, provider documentation, features and pricing — not on commission rates. Prices can change; check the provider's site before buying. Last updated: September 29, 2026.