Fugu Max
Access Sakana AI's Fugu Max through one API key. Multi-agent orchestration at a workhorse price.
Sakana AI's cost-performance Fugu model. Fugu is a learned multi-agent orchestration system that routes work across specialist models, with a 1M token context window and 128K output tokens.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
Try it live
Send a message and see Fugu Max respond in real time.
Maximum tokens in the response.
Real-time tokens
Context Window
1M tokens
Max Output
128K tokens
Input Price
$2.80 / 1M tokens
Output Price
$8.40 / 1M tokens
Strengths
Fugu is not a single monolithic model: a router model is trained to decompose a task and dispatch it across specialist agents, then assemble the result — a different architecture from the frontier labs' dense models.
At $2.80 per 1M input and $8.40 per 1M output tokens, Fugu Max is the affordable tier of the family, well-suited to high-volume reasoning and agent workloads.
Handles up to 1,000,000 input tokens and returns up to 128,000 output tokens per call, so large documents and long agent histories fit in a single request.
Supports function calling, JSON schema structured outputs, reasoning effort control, and built-in web search options.
Quick start
Copy this snippet and start making calls with Fugu Max.
const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({
"model": "sakana/fugu-max",
"messages": [
{
"role": "user",
"content": "Explain API gateways in 2 sentences."
}
],
"maxTokens": 256
}),
});
const { data } = await res.json();
console.log(data.message.content);Why use Fugu Max through YepAPI?
Fugu Max API — pricing, context window & access
Fugu Max is the cost-performance model in Sakana AI's Fugu family. Rather than one large network, Fugu is a learned multi-agent orchestration system: a language model trained to route parts of a task to specialist agents and combine their answers. It offers a 1,000,000-token context window and up to 128,000 output tokens per response.
Through YepAPI you call Fugu Max on an OpenAI-compatible endpoint with a single key — the same key that reaches GPT-6, Claude, Gemini and the SEO, SERP and scraping APIs.
What is Fugu Max?
Fugu Max is Sakana AI's affordable Fugu tier. Sakana's approach differs from the frontier labs: instead of scaling a single dense model, Fugu trains an orchestrator that breaks a problem into parts, hands each to a specialist model, and merges the results. Fugu Max applies that system with a cost-optimised set of agents, so you get multi-step reasoning, tool use and web search at a price closer to a mid-tier model than a flagship. Fugu Ultra v2 is the higher-performance sibling for harder tasks.
Build with Fugu Max via YepAPI
YepAPI serves Fugu Max on the OpenAI-compatible /v1/ai/chat endpoint. Point your base URL at YepAPI, add your key, and set the model string to fugu-max (or sakana/fugu-max). Function calling, structured outputs and reasoning effort pass through unchanged. Stepping up to Fugu Ultra v2 or across to GPT-6 Astra for the hardest steps is a one-string change per request.
Fugu Max API pricing — $2.80 / 1M input, $8.40 / 1M output
Fugu Max costs $2.80 per 1M input tokens and $8.40 per 1M output tokens through YepAPI, pay per token with no minimums. That places it in the mid-tier price band alongside models like GPT-6 Sol, while the multi-agent architecture and 128K output ceiling make it suited to long agentic runs that would be expensive on a flagship.
Fugu Max for agents and high-volume reasoning
Fugu Max fits workloads where many tasks each need real reasoning but the per-task budget is small: research assistants, coding agents on routine tickets, document pipelines that extract, verify and summarise. Built-in web search options let it ground answers without an extra retrieval step, and the 1M-token window keeps long agent transcripts in context.
Try Fugu Max free
Every new YepAPI account includes $5 in free credit with no card required — enough for hundreds of Fugu Max calls. Create an account, copy your key, and call fugu-max right away.
Start generating in 30 seconds
$5 free credit on signup. No credit card required. Pay per call.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
Sakana AI's cost-performance Fugu model. Fugu is a learned multi-agent orchestration system that routes work across specialist models, with a 1M token context window and 128K output tokens.
Input tokens cost $2.80 per 1M tokens and output tokens cost $8.40 per 1M tokens through YepAPI. No monthly minimums — you only pay for what you use.
Sign up for a free API key, then send requests to the /v1/ai/chat endpoint.
Fugu Max supports a 1M token context window with up to 128K output tokens per request.
Ready to use Fugu Max?
$5 free credit on signup. No credit card required. Pay per call.
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