Fugu Ultra 2 is Sakana's language model with a 1.0M context window and up to 128K output tokens, available from 2 providers, starting at $5.00 / 1M input and $30.00 / 1M output. A high-performance multi-agent orchestration model from Sakana AI's Fugu family, using a trained language model to route tasks across coordinated agents.
Specifications
Canonical IDsakana-fugu-2-ultra
TypeLanguage
StatusActive
CreatorSakana
Providers
Context Window1.0M tokens
Max Output128K tokens
Input ModalitiesImagePDFText
Output ModalitiesText
Reasoning Effortsdefault
Release Date · 12 days ago
Knowledge Cutoff · 26 days ago

Capabilities

Input3/5
Text
Image
Audio·
Video·
PDF
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities6/13
Reasoning
Adaptive Reasoning·
Function Calling
Parallel Function Calling·
Structured Outputs
Native JSON Schema
Web Search
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Web Search
$ / request
OpenRouter logo
OpenRouter
sakana/fugu-ultra-v2
$5.00$30.00$0.5$0.010
Vercel AI Gateway logo
Vercel AI Gateway
sakana/fugu-ultra-v2
$5.00$30.00$0.5N/A

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Fugu Ultra 21.0M$5.00$30.00Current
Fugu Ultra1.0M$5.00$30.00Available

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Fugu MaxMax1.0M$2.00$6.00

Model IDs

openrouter/sakana/fugu-ultra-v2
sakana-fugu-2-ultra
sakana/fugu-ultra-v2