What Fugu Ultra v2 is
Fugu Ultra v2 is a Sakana model that went live on OpenRouter on September 11, 2026. It follows Fugu Ultra. Per standard answer it costs about the same, $0.0200 against $0.0200, and it keeps the same 1M token context window.
| Released | September 11, 2026 |
| Provider | Sakana |
| Context window | 1M tokens |
| Input, per million tokens | $5 |
| Output, per million tokens | $30 |
| Credits per message in Whizi | 25 |
| Minimum Whizi plan | Powerhouse |
How to try Fugu Ultra v2 in Whizi
Whizi puts Fugu Ultra v2 in the same model picker as ChatGPT, Claude and Gemini, so there is no separate Sakana account or API key to set up. Pick a plan on the pricing page, open a new chat, choose Fugu Ultra v2 in the model picker and send your first message.
Each message costs 25 credits, whatever its length. If a question turns out to suit another model better, switch in the same conversation and the thread carries across. See switching models mid-conversation.
What Fugu Ultra v2 costs
List rates are what the provider charges per token. The cost of one standard answer is the more useful number, because it prices the same unit of work across every model regardless of how each one is billed.
| Input, per million tokens | $5 |
| Output, per million tokens | $30 |
| One standard answer | $0.0200 |
| One thousand answers | $20.00 |
| Context window | 1M tokens |
| Credits per message in Whizi | 25 |
| Minimum Whizi plan | Powerhouse |
| Rank by cost, of 113 priced models | 112 |
Prices are the published Sakana rates as carried by OpenRouter, last refreshed 2026-09-26. The full dataset covering all 124 models from 33 providers is the AI model cost index, which is free to reuse with attribution.
What it costs inside Whizi
Whizi meters messages in credits rather than tokens, and Fugu Ultra v2 is charged at 25 credits per message. The cost does not change with the length of your message or the length of the answer, so a one line question and a long document analysis cost the same.
| Plan | Price per month | Monthly credits | Messages on this model |
|---|---|---|---|
| Powerhouse | $49.99, or $34.99 billed yearly | 8,000 | 320 |
Fugu Ultra v2 is part of the Powerhouse catalogue. Anything not explicitly listed on the Starter or Pro tiers resolves to Powerhouse, which is the deliberate default for the frontier and specialist models. See plans and limits.
- Input $5 and output $30 per million tokens
- $0.0200 for one standard answer, $20.00 for a thousand
- 1M token context window
- 25 credits per message inside Whizi
- Requires the Powerhouse plan or above
- Ranks 112 of 113 priced models by cost per answer
Frequently asked questions
What is Fugu Ultra v2?
Fugu Ultra v2 is a Sakana model released on September 11, 2026, with a 1M token context window. It follows Fugu Ultra. Per standard answer it costs about the same, $0.0200 against $0.0200, and it keeps the same 1M token context window.
How do I use Fugu Ultra v2?
Sign up for Whizi, open a new chat and choose Fugu Ultra v2 in the model picker. It is available on the Powerhouse plan and above at 25 credits per message, with no Sakana account or API key needed.
How much does Fugu Ultra v2 cost?
$5 per million input tokens and $30 per million output tokens at list rates, which works out to $0.0200 for one standard answer of 1,000 tokens in and 500 out, or $20.00 for a thousand of them. Inside Whizi it is 25 credits per message on a monthly allowance, rather than metered per token.
Which Whizi plan includes Fugu Ultra v2?
Powerhouse and above, which is $49.99 per month or $34.99 billed yearly. At 25 credits per message, a Powerhouse allowance of 8,000 credits covers 320 messages on this model if you spend the whole allowance here, and most people mix in a 1 credit model for routine work so it goes further.