Fugu
sakana/fuguBy sakana · family: fugu · released 2026-06-15
Prices in USD per 1M tokens. Unknown means the provider does not publish per-token pricing.
Capabilities
Model fit scores
0–100 · higher is betterThese scores reward declared capabilities, context size, price and provider availability — they are not benchmark results. Use them as a directional signal alongside your own evaluation.
Coding91
- Tool calling40/40
- Structured output20/20
- Reasoning10/10
- Context window (100K → 1M)20/20
- Provider availability1/10
Agents91
- Tool calling35/35
- Structured output25/25
- Reasoning15/15
- Output token limit15/15
- Provider availability1/10
JSON / structured output70
- Structured output / JSON mode50/50
- Tool calling20/20
- Temperature control0/10
- Price-friendly for high-volume0/20
Cost efficiency0
- Has published price0/100
Long context80
- Context window (100K → 2M)80/90
- Has published price for full window0/10
Vision81
- Accepts image input50/50
- Context window (10K → 1M)30/30
- Has published price0/10
- Provider availability1/10
Production-readiness45
- Number of independent providers5/40
- Has published per-token price0/20
- Context window ≥ 8K15/15
- No data inconsistencies across providers10/10
- Official model (not derivative)15/15
Cost Efficiency Index
Open full calculator →Estimated cost using the recommended provider's headline rate. Each scenario fixes average input/output tokens — the assumptions are shown in the third column.
This model has no published per-token price, so we can't compute a cost estimate. See the provider's official pricing page for current rates.
Available on 1 providers
| Provider | Provider model id | Input / 1M | Output / 1M | Context | Released |
|---|---|---|---|---|---|
| Sakana AI sakana | fugu | Unknown | Unknown | 1M | 2026-06-15 |
Frequently asked questions
How much does Fugu cost?
Fugu does not have a publicly published per-token price in our data source. This usually means it is gated behind enterprise sales or invite access. Check sakana's official pricing page for the most current rates.
What is the context window of Fugu?
Fugu has a context window of 1M tokens, with a max output of 1M tokens per reply. This is the total combined size of prompt + completion.
Does Fugu support tool calling?
Yes. Fugu supports tool calling (function calling). This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Does Fugu support structured output / JSON mode?
Yes. Fugu supports structured output / JSON-schema-constrained decoding. This makes it suitable for production agent and automation workloads where the model has to invoke external functions reliably.
Can Fugu accept image input?
Yes. Fugu accepts both text and image input. Vision pricing per image is usually billed on top of the regular token rate — check sakana's docs for the exact rule.
Is Fugu open-weight?
No. Fugu is a proprietary model — only sakana (and any approved hosting partners) can serve it. The pricing above reflects the cheapest API access.
What are the best alternatives to Fugu?
If Fugu doesn't fit, consider Fugu Ultra, Fugu Ultra. Each one targets the same use case — see the Related links below for direct head-to-head pages.
Where does this data come from?
All numbers are normalised into a single canonical model record and reconciled with each provider's official documentation. We re-pull daily and write any changes (price, context, capability) to the /changelog page.
Explore more
More sakana models
- Fugu Ultra$5.00 in / $30.00 out
- Fugu Ultra$5.00 in / $30.00 out
Capability lists this model is in
Last updated:
Pricing and capabilities are refreshed daily and reconciled against each provider's official documentation. Always verify critical production decisions with the provider directly.