Claude Opus 5.5 vs Fugu Ultra v2

Price, context window & benchmark comparison

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Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
VS
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Fugu Ultra v2

Sakana
$5.00 / $30.00
Input / Output · per 1M tokens
Compare different models
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Verdict: Claude Opus 5.5 is 29% cheaper than Fugu Ultra v2 on a typical 3:1 input/output mix.
Claude Opus 5.5Fugu Ultra v2
Input price / 1M$4.00$5.00
Output price / 1M$20.00$30.00
Blended price (3:1)$8.00$11.25
Cached input / 1M$0.20$0.50
Context window1M1M
Max output128K128K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-222026-09-11
Retirement

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FAQ

Which is cheaper, Claude Opus 5.5 or Fugu Ultra v2?

Claude Opus 5.5 is 29% cheaper than Fugu Ultra v2 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs Fugu Ultra v2: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. Fugu Ultra v2: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, Fugu Ultra v2 ≈ $25,000.

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