Side by side
GPT-6 Astra Pro vs Fugu Ultra v2
Source: OpenRouter (live)
Live figures
The numbers
Best value in each row is highlighted. "Not declared" means the provider does not advertise the feature on its listing.
| Attribute | ||
|---|---|---|
| Input priceUSD per 1M tokens | $10.00 | $5.00 (best) |
| Output priceUSD per 1M tokens | $50.00 | $30.00 (best) |
| Blended price75% in / 25% out | $20.00 | $11.25 (best) |
| Vs. market median | 22.2× dearer | 12.5× dearer |
| Value rankcheapest = 1 | #415 | #408 (best) |
| Context windowtokens | 1.1M (best) | 1M |
| Max outputtokens | 128K | 128K |
| Input modalities | file, image, text | text, image, file |
| Output modalities | text | text |
| Tool calling | Declared | Declared |
| Reasoning | Declared | Declared |
| Structured output | Declared | Declared |
| Listed on OpenRouter | 2026-09-04 | 2026-09-11 (best) |
Blended price assumes a 3:1 input-to-output token mix. Median is across all 429 priced models.
Add or swap modelsCost calculator
At your volume
Estimate the monthly bill for these models at your own token volumes.
| Model | Input | Output | Monthly | Yearly | vs cheapest | |
|---|---|---|---|---|---|---|
| Sakana: Fugu Ultra v2 Sakana · $5.00 in / $30.00 out per M | $250 | $450 | $700 | $8,400 | Cheapest | |
| OpenAI: GPT-6 Astra Pro OpenAI · $10.00 in / $50.00 out per M | $500 | $750 | $1,250 | $15,000 | +$550 (1.8×) |
Estimates use list prices per million tokens from live provider listings. Cached-input, batch and volume discounts are not included, so real bills are often lower.
Read-out
What the numbers say
- Sakana: Fugu Ultra v2 is the cheapest here at $11.25/M blended; OpenAI: GPT-6 Astra Pro costs 1.8× as much.
- OpenAI: GPT-6 Astra Pro offers the largest context window (1.1M tokens) versus 1M for Sakana: Fugu Ultra v2.
Models
Model pages
Full pricing history, capabilities and alternatives for each model in this comparison.
OpenAI
$20.00
/M blended
Sakana
$11.25
/M blended
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