Sakana AI

Fugu Ultra

Revisado por el equipo de investigación de GetInfoUsÚltima revisión: October 2026Política editorial
Motor de Razonamiento ProfundoOfficial Source Verified ↗
86
Intelligence Index

Fugu Ultra de Sakana AI es un modelo de IA diseñado para razonamiento lógico profundo, matemáticas avanzadas y resolución científica paso a paso, con ventana de contexto de 1M, velocidad de 75 tokens/s, índice de inteligencia de 86/100 y tarifa de $1.5/$6 por 1M de tokens.

Technical Specifications

Provider
Sakana AI
Category
flagship
Release Date
2026-06
Knowledge Cutoff
March 2026
Architecture
Evolutionary Multi-Model Merged Transformer
Parameters
Confidential / Frontier Merged
Context Window
1M tokens
Max Output
16K tokens
Cached Input Price
$0.15 / 1M tokens
Batch API Discount
50% off async batch
Consumer Subscription
API Pay-as-you-go
Reasoning Mode
Yes (Chain-of-Thought)
Reasoning Effort Control
Configurable (Low / Med / High)
Tool Calling
Yes
Structured Outputs
Yes
Open Weights
No (Proprietary Cloud)
Input Modalities
text
Output Modalities
text
Official Documentation
Visit Official Docs ↗

Data Privacy, Licensing & Deployment Governance

API Data Training Policy
API payloads are excluded from model training by default
Model License & Commercial Rights
Proprietary Commercial API (Sakana AI Terms)
Deployment & Cloud Availability
Sakana AI Cloud API & Enterprise Endpoints
Output Ownership
Full commercial ownership of generated outputs

Official Provider Release Intelligence, API Quotas & Agentic Specs

Compare Multi-Models Side-by-Side →
Official API Model ID (SDK String)
fugu-ultra
Supported SDK & API Protocol
Sakana AI REST API (OpenAI-Compatible)
Lifecycle & Deprecation Status
Active GA (Guaranteed support through 2028+)
Production Rate Limits (RPM & TPM)
5,000 – 15,000 RPM (Production Tier) · 4,000,000 – 10,000,000 TPM
Long-Context Pricing Tier (>128K / >200K)
Flat rate ($1.5/1M in) across full 1000K window
Prompt Cache Write & TTL Policy
Cached input at $0.15/1M tokens
Computer Use & Browser GUI Agent
API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop)
MCP & Parallel Tool Calling
Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & Code Sandbox
Supported via external Tavily/Exa Search & E2B/Docker Sandbox tools
Fine-Tuning & Distillation Support
API Prompt Engineering & RAG Distillation
Multimodal Tokenization Billing
Text BPE (~4 chars/token)
Weights Precision & Quantization
Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster)
Minimum GPU VRAM Requirement
Zero Local VRAM Required (100% Serverless Cloud API)
Supported Inference Engines
Managed Sakana AI Cloud API
System Card & Safety Framework
Sakana AI Production Safety & Alignment Verified
Enterprise Compliance (SOC2 / HIPAA / ZDR)
SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier
Engineering & Pricing Workbench

Fugu Ultra Cost, Context, Hardware & API Integration

500 / day
4,000 tok
1,000 tok
Conversation Depth (History Re-billing):1 Turn (Single-Shot)
50%
Estimated Monthly API Cost (30 Days)
$139.50$180.00
Monthly Savings: $40.50 (Caching/Batch)
Subscription ($20/mo) vs API

For single-user chat, a $20/mo subscription caps your bill below this API volume.

Break-even point: ~72 requests/day equals $20/month.

Same Monthly Workload Cost Across Popular Reference Models

Fugu Ultra (Active)
$139.50
/ month
Gemini 2.5 Flash
$18.00
/ month
DeepSeek V3
$32.70
/ month
GPT-4o
$300.00
/ month
Claude 3.7 Sonnet
$405.00
/ month

Live Prompt Paste Tokenizer & Cost Counter

Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.

Chars / Words
175 / 24
OpenAI o200k
~46 tok
Claude BPE
~49 tok
Llama / DeepSeek
~51 tok

Hybrid Prompt Routing Cascade Simulator

Route routine queries to a fast lightweight model ($0.15/1M) and escalate only complex reasoning turns to Fugu Ultra:

Cascaded Monthly Bill:$48.38/mo
Saves $91.13/mo (65% cost reduction) vs sending 100% of traffic to Fugu Ultra.

Benchmark Scores & 6-Axis Capability Radar

Benchmark Encyclopedia
Coding (92)Reasoning (77)Knowledge (83)Speed (50)Context (100)Cost Value (72)
Fugu Ultra2026 Frontier Median
GPQA Diamond
67%
MMLU-Pro
83%
HumanEval
92%
Chatbot Arena Elo
1370pts

Strengths

  • Ventana de contexto de 1M con hasta 16K tokens de salida máxima (GPQA Diamond 67% · MMLU-Pro 83%)
  • Rendimiento ágil de 75 tokens/segundo con latencia inicial (TTFT) de solo 540 ms
  • Economía de API competitiva ($1.5/$6 por 1M de tokens) con soporte para caché de prompts y salidas JSON estructuradas

Limitations & Trade-offs

  • Modelo propietario en la nube; no permite descargar los pesos para ejecución local sin conexión
  • En demostraciones científicas extremas, los modelos de razonamiento pesado de gama alta ofrecen mayor profundidad

Editorial Assessment

Con una puntuación de inteligencia de 86/100, contexto de 1M y 75 tok/s, Fugu Ultra destaca como una opción sumamente sólida dentro del ecosistema de Sakana AI.

Best for: Ideal para razonamiento lógico profundo, matemáticas avanzadas y resolución científica paso a paso, sistemas RAG empresariales y automatización mediante API.

Frequently Asked Questions about Fugu Ultra

How much does the Fugu Ultra API cost per 1M tokens?+

Fugu Ultra by Sakana AI is priced at $1.5 per 1M input tokens and $6 per 1M output tokens. With prompt caching enabled, cached input tokens cost $0.15 per 1M tokens, and asynchronous Batch API requests receive a 50% discount.

Should I use a $20/month subscription or the Fugu Ultra pay-as-you-go API?+

A flat $20/month consumer subscription is predictable for daily interactive chat and manual coding. However, if you are building software, running automated workflows, or sending low-to-moderate volume with prompt caching enabled, the pay-as-you-go API is typically far more cost-effective and offers higher rate limits without manual UI caps.

How many words and pages fit in Fugu Ultra's context window?+

Fugu Ultra features a 1M tokens context window, which equals approximately 750,000 English words or ~2,000 standard single-spaced pages in a single prompt. Its maximum output generation per turn is 16,384 tokens.

Can I run Fugu Ultra locally on my own GPU (Open Weights)?+

No, Fugu Ultra is a proprietary closed-weights model hosted by Sakana AI. It cannot be downloaded for local GPU execution and must be accessed via Sakana AI's official API or cloud platform.

Does Sakana AI train on data sent to the Fugu Ultra API, and is commercial use allowed?+

API payloads are excluded from model training by default. License tier: Proprietary Commercial API (Sakana AI Terms). Full commercial ownership of generated outputs. Supported deployment channels include: Sakana AI Cloud API & Enterprise Endpoints.

How does Fugu Ultra perform on coding and reasoning benchmarks?+

Fugu Ultra achieves a composite Intelligence Index of 86/100, scoring N/A% on SWE-bench Verified, 67% on GPQA Diamond, 83% on MMLU-Pro, and 1370 pts on Chatbot Arena Elo.

What is Fugu Ultra best used for?+

Fugu Ultra is best suited for: Ideal para razonamiento lógico profundo, matemáticas avanzadas y resolución científica paso a paso, sistemas RAG empresariales y automatización mediante API.. Assessment: Con una puntuación de inteligencia de 86/100, contexto de 1M y 75 tok/s, Fugu Ultra destaca como una opción sumamente sólida dentro del ecosistema de Sakana AI.

Las puntuaciones de benchmarks, precios por token y límites de tasa evolucionan rápidamente. Verifique siempre las especificaciones actuales en la documentación oficial del proveedor.

Fuentes: Sakana AI Research Release↗