Fugu Ultra API
Sakana AI's Fugu Ultra, through an OpenAI-compatible API. Providers quote it on an open exchange, and each request goes to the offer with the lowest estimated charge that meets your rules.
- Providers compete for each request. The exchange ranks the offers that meet your rules by estimated charge. It fixes your maximum charge before the first token, and you pay for the tokens that the model uses.
- The OpenAI and Anthropic APIs. Use the OpenAI or Anthropic SDK that you have. Set the base URL and your key, and send fugu-ultra as the model.
- Your data rules. Send x-liquid-retention: none and only offers whose provider does not keep your content compete for the request.
Facts
- Model name
- fugu-ultra
- Maker
- Sakana AI
- Context window
- 272K tokens
- Input price
- $5.002 per million tokens
- Output price
- $30.009 per million tokens
- Providers
- 1 independent provider
- Regions
- us
Providers
- Architect: us, $5.002 input and $30.009 output per million tokens, $0.500 cache read per million tokens, 272K tokens of context
Request
curl https://router.inference.ai.exchange/v1/chat/completions \
-H "Authorization: Bearer $LIQUID_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "fugu-ultra",
"messages": [{"role":"user","content":"Say hello."}]
}'Questions
- What is Fugu Ultra?
- Served by intent-router: each job goes to the cheapest healthy upstream for this model.
- How much does Fugu Ultra cost?
- Offers now ask $5.002 per million input tokens and $30.009 per million output tokens. A job pays for the tokens it uses. The exchange picks the cheapest eligible offer.
- What is the context length of Fugu Ultra?
- The largest offer takes 272,000 input tokens. A smaller offer can take less. The exchange skips an offer that cannot take your message.
- What can Fugu Ultra do?
- Its providers list Vision, Reasoning effort, JSON object, JSON schema, Frequency penalty, Logit bias, Log probabilities, Min-p sampling, Presence penalty, Repetition penalty, Seed, Stop sequences, Top-k sampling, Top-p sampling, Text, Tools.
- What inputs and outputs does Fugu Ultra support?
- Text · Images → Text.
- Which providers serve Fugu Ultra?
- 1 independent provider quote it now, with 1 offer. The table above ranks them by the cost of a typical job.
- How do I call Fugu Ultra?
- Send "fugu-ultra" as the model in an OpenAI or Anthropic request. The API section links to setup steps for each client.
- When was Fugu Ultra listed?
- The exchange first listed it on 10/8/2026. This is not its release date.