Sakana de AI Japanese-multilingüe de frontera modelo de razonamiento developed using evolutionary modelo merging con millones-token capacidad.
Technical Specifications
- Provider
- Sakana AI
- Category
- flagship
- Release Date
- 2026-06
- Batch API Discount
- 50% off async batch
- Consumer Subscription
- API Pay-as-you-go
- Reasoning Effort Control
- Configurable (Low / Med / High)
- Structured Outputs
- Yes
- Output Modalities
- text
- Official Documentation
- Visit Official Docs ↗
Data Privacy, Licensing & Deployment Governance
Official Provider Release Intelligence, API Quotas & Agentic Specs
- 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
Fugu Ultra Cost, Context, Hardware & API Integration
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
Live Prompt Paste Tokenizer & Cost Counter
Paste real system instructions, JSON schemas, or code to measure BPE token counts across tokenizers.
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:
Benchmark Scores & 6-Axis Capability Radar
- GPQA Diamond
- 67%
- MMLU-Pro
- 83%
- HumanEval
- 92%
- Chatbot Arena Elo
- 1370pts
Strengths
- mundo-clase Japanese idioma comprensión y cultural matiz
- Evolutionary modelo merging techniques yield creativo, non-estándar problem-solving paths
- masivo 1M token ventana de contexto con confiable factual recall
Limitations & Trade-offs
- mayor comercial API precios reflecting premium investigación nivel
- Niche availability outside el Japanese empresarial market
Editorial Assessment
un brilliant breakthrough de de Tokyo Sakana AI showcasing evolutionary AI capacidades.
Best for: Japanese empresarial inteligencia, bilingual traducción, y creativo científico exploration
Compare Fugu Ultra
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: Japanese empresarial inteligencia, bilingual traducción, y creativo científico exploration. Assessment: un brilliant breakthrough de de Tokyo Sakana AI showcasing evolutionary AI capacidades.
AI Glossary & Architecture Concepts
View full glossary →Key machine learning concepts and benchmarks relevant to Fugu Ultra:
La unidad básica de texto que procesa un modelo de lenguaje, que normalmente equivale a 3 o 4 caracteres o aproximadamente 0,75 palabras. Por ejemplo, una frase típica se divide en varios tokens.
Un conjunto estandarizado de pruebas para evaluar y comparar objetivamente las capacidades de distintos modelos de IA en tareas como programación (SWE-bench) o matemáticas avanzadas (AIME).
La cantidad máxima de tokens que un modelo puede considerar a la vez, incluyendo tanto la entrada que lee como la salida que genera. Una ventana de 1.000.000 de tokens puede procesar unas 750.000 palabras en una sola petición.
Un modelo de IA entrenado para invertir cómputo adicional en pensar y validar hipótesis lógicas antes de responder, diseñado para problemas complejos de ingeniería y matemáticas.
Una técnica de razonamiento paso a paso donde el modelo genera pensamientos intermedios antes de formular la respuesta final, mejorando radicalmente la resolución de problemas matemáticos y lógicos.
La capacidad de un modelo de detectar la necesidad de una función externa y emitir argumentos JSON estructurados para ejecutar API, búsquedas web o consultas a bases de datos.
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↗