MODEL PROOF
Fugu Ultra v2
NOT INDEPENDENTLY RATED
No independent LMArena score is published for this model.
- Independent LMArena score
- Not independently rated
- Context window
- 1M
- Maximum output
- 128K
- Input modalities
- text, image, file
- Output modalities
- text
- Published input price
- $5.00 / 1M tokens
- Published output price
- $30.00 / 1M tokens
- Pricing kind
- fixed
- Context tiers
- Tiered by context
MODEL MONUMENT
Save or share this proof
Sakana: Fugu Ultra v2. Balanced workload. Not independently rated. Evidence as of 19 Sept 2026.
$5.00/M in, $30.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription. Fugu Ultra v2 has no independent quality score. Unrated is not a score of zero.
Every price dimension
| Input | $5.00/M |
|---|---|
| Output | $30.00/M |
| Cached input | $0.500/M |
| Web search | $0.01/call |
The headline rate does not apply to a long-context workload.
| Past 272,000 tokens | $10.00/M in (2×) $45.00/M out |
|---|
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Sakana AI | $5.00 | $30.00 | undeclared | 100.00% |
Independent scores
No independent benchmark has measured this model. Unrated is not a score of zero.
Capability
| Context window | 1M |
|---|---|
| Max output | 128K |
| Input modes | text, image, file |
| Tool use | yes |
| Reasoning | always on |
| Knowledge cutoff | 2026-08-28 |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-09-19 |
| Quality data | unrated |
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to...
Questions this page answers
What does Fugu Ultra v2 cost?
$5.00/M in, $30.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Fugu Ultra v2 have an independent quality score?
Fugu Ultra v2 has no independent quality score in this catalogue. Unrated is not a score of zero.
What beats Fugu Ultra v2?
Fugu Ultra v2 has no independent quality score. Unrated is not a score of zero.
Does this page use Artificial Analysis scores for Fugu Ultra v2?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
Check whether this is still the one to buy
Badge
The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/sakana__fugu-ultra-v2/)<a href="https://undominated.ai/models/sakana__fugu-ultra-v2/"><img src="https://undominated.ai/badge/sakana__fugu-ultra-v2.svg" alt="Fugu Ultra v2 — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/sakana__fugu-ultra-v2.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
older than the last deploy.
