How much does Fugu Ultra v2 cost?

Fugu Ultra v2 costs $5 per 1 million input tokens and $30 per 1 million output tokens. This pricing is set by Sakana AI.

What tokenizer does Fugu Ultra v2 use?

Fugu Ultra v2 uses the cl100k_base tokenizer. This tokenizer has a vocabulary of ~100,000 tokens and is widely used across many models.

What is Fugu Ultra v2's context window?

Fugu Ultra v2 supports a context window of 1.0M tokens (1,000,000 tokens). The maximum output length is 128K tokens.

How does Fugu Ultra v2 compare to other models?

You can compare Fugu Ultra v2's pricing and capabilities against other LLMs in the comparison table above, or visit the full pricing page for a side-by-side view of all models.

How do I count tokens for Fugu Ultra v2?

Use the token counter at the top of this page or visit the homepage calculator. Paste your text and it will show the exact token count and cost for Fugu Ultra v2 using the cl100k_base tokenizer.

Fugu Ultra v2

Last verified September 12, 2026 · Sakana AI pricing ↗

$5.00/1M input · $30.00/1M output · 1.0M context · Sakana AI

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Alternatives to Fugu Ultra v2

Cheaper Alternative

Gemini 3.1 Flash Lite Image

$0.250 in · $30.00 out · Google

14% cheaper

Premium Upgrade

MAI-Image-2

$5.00 in · $33.00 out · Microsoft

Premium tier from Microsoft

Same Provider

Fugu Max

$2.00 in · $6.00 out · Sakana AI

77% cheaper in Sakana AI ecosystem

Pricing Details

Sakana AIORCHESTRATOR (see fugu-max). Model id fugu-ultra resolves to fugu-ultra-v2.0 (released 2026-09-11); fugu-ultra-v1.1 and fugu-ultra-v1.0 (aka fugu-ultra-20260615) remain selectable. Card UNCHANGED SINCE v1.0 GA on 2026-06-22 (Wayback 20260622015845: 'Fixed pricing for fugu-ultra-20260615'): $5.00 input, $30.00 output, $0.50 cached input, and for prompts over 272K tokens $10.00 / $45.00 / $1.00, i.e. 2x input and cached and 1.5x output, the same threshold and multipliers as OpenAI's GPT-5.6. The v1.1 post (2026-07-24) said 'the same price as Fugu-Ultra v1.0'. STORED PRICE IS A FLOOR: orchestration tokens are billed at the same rates, additively to input/output, and their typical share is unpublished (details on fugu-max). The tech report says Ultra is 'instructed to design agentic workflows of up to 5 steps'; max_output_tokens applies only to the final response, the orchestrator keeps its own limit. Training cutoff 2026-08-28. Pool: 'a swappable pool of open and specialized models'; Sakana states Fable 5, Fable 5.1 and GPT-6 Astra are NOT in the v2 pool (the v1 pool per the tech report was Gemini 3.1 Pro, Claude Opus 4.8 and GPT-5.5). Sakana-reported benchmarks (2026-09-11): Chartography 48.3 (Opus 5 27.3, Fable 5 29.5), DeepSWE 74.3, GDP.pdf 34.3, SWEFish 71.8, Toolathon 80.6 (tie with Opus 5), HLE text 56.3 (Fable 5.1 59.1), ProgramBench 81.0 (Astra 85.4), GPQA-D 95.5 (Astra 96.0; v1.1 95.6). No Artificial Analysis entry. OpenRouter 2026-09-12: 55 tok/s P50, 5.77 s TTFT. web_search/web_fetch $0.007 per call. No batch rate. Not available in the EU/EEA. Fugu Cyber, the sibling tier, was $6/$36/$0.60 in a 2026-07-28 capture and is 'contact sales' since late August; not listed here. Estimated tokens (undisclosed tokenizer).

Input / 1M tokens

Output / 1M tokens

$30

Context Window

1.0M

Max Output

128K

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Price History

Launched at current price on 2026-09-11. No price changes recorded since.

Frequently Asked Questions

Common questions about Fugu Ultra v2 pricing and usage

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