OpenAI o1 vs Sakana Fugu Ultra
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Fugu Ultra is 2.3× cheaper at a typical mix of 3 input tokens per output token.
- Fugu Ultra accepts longer prompts: 1M vs 200K tokens.
- Fugu Ultra's best provider was more reliable over 24 h: 100% vs 0.0%.
- Fugu Ultra is the newer model (released 2026-06-24).
| o1 | Fugu Ultra | |
|---|---|---|
| Vendor | OpenAI | Sakana |
| Released | 2024-12-17 | 2026-06-24 |
| Input / 1M | $15.00 | $5.00 |
| Output / 1M | $60.00 | $30.00 |
| Cached input / 1M | $7.50 | $0.50 |
| Blended / 1M (3:1) | $26.25 | $11.25 |
| Context | 200K | 1M |
| Max output | 100K | 128K |
| Accepts | text, image, file | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 1 |
| Cheapest provider, output | $60.00 | $30.00 |
| Best provider uptime, 24 h | 0.0% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | — |
Cost calculator
o1
$1,800 per month$60.00 per day
Fugu Ultra
$750 per month$25.00 per day
Fugu Ultra saves $1,050 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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