Claude Fable 5 vs Claude Opus 5.5

Price, context window & benchmark comparison

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Claude Fable 5

Anthropic
$10.00 / $50.00
Input / Output · per 1M tokens
VS
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Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
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Verdict: Claude Opus 5.5 is 2.5× cheaper than Claude Fable 5 on a typical 3:1 input/output mix. Claude Opus 5.5 scores higher on the Artificial Analysis Intelligence Index (57.6 vs 49.6).
Claude Fable 5Claude Opus 5.5
Input price / 1M$10.00$4.00
Output price / 1M$50.00$20.00
Blended price (3:1)$20.00$8.00
Cached input / 1M$1.00$0.20
Context window1M1M
Max output128K128K
Intelligence index49.657.6
Coding index76.5
Providers611
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-06-092026-09-22
Retirement

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FAQ

Which is cheaper, Claude Fable 5 or Claude Opus 5.5?

Claude Opus 5.5 is 2.5× cheaper than Claude Fable 5 on a typical 3:1 input/output mix.

Claude Fable 5 vs Claude Opus 5.5: which has a bigger context window?

Claude Fable 5: 1,000,000 tokens. Claude Opus 5.5: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Fable 5 ≈ $45,000, Claude Opus 5.5 ≈ $18,000.

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