Claude Opus 4.8 vs Claude Sonnet 5

Price, context window & benchmark comparison

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Claude Opus 4.8

Anthropic
$5.00 / $25.00
Input / Output · per 1M tokens
VS
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Claude Sonnet 5

Anthropic
$2.00 / $10.00
Input / Output · per 1M tokens
Compare different models
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Verdict: Claude Sonnet 5 is 2.5× cheaper than Claude Opus 4.8 on a typical 3:1 input/output mix. Claude Opus 4.8 scores higher on the Artificial Analysis Intelligence Index (41.8 vs 38.2).
Claude Opus 4.8Claude Sonnet 5
Input price / 1M$5.00$2.00
Output price / 1M$25.00$10.00
Blended price (3:1)$10.00$4.00
Cached input / 1M$0.50$0.20
Context window1M1M
Max output128K128K
Intelligence index41.838.2
Coding index74.371.5
Providers1110
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-05-272026-06-30
Retirement

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FAQ

Which is cheaper, Claude Opus 4.8 or Claude Sonnet 5?

Claude Sonnet 5 is 2.5× cheaper than Claude Opus 4.8 on a typical 3:1 input/output mix.

Claude Opus 4.8 vs Claude Sonnet 5: which has a bigger context window?

Claude Opus 4.8: 1,000,000 tokens. Claude Sonnet 5: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 4.8 ≈ $22,500, Claude Sonnet 5 ≈ $9,000.

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