Claude Opus 5.5 vs DeepSeek V3 0324

Price, context window & benchmark comparison

A

Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
VS
D

DeepSeek V3 0324

DeepSeek
$0.25 / $1.00
Input / Output · per 1M tokens
Compare different models
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D
Verdict: DeepSeek V3 0324 is 18.3× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 scores higher on the Artificial Analysis Intelligence Index (57.6 vs 9.7). Claude Opus 5.5 has the larger context window (1M vs 164K).
Claude Opus 5.5DeepSeek V3 0324
Input price / 1M$4.00$0.25
Output price / 1M$20.00$1.00
Blended price (3:1)$8.00$0.44
Cached input / 1M$0.20
Context window1M164K
Max output128K147K
Intelligence index57.69.7
Coding index21.2
Providers11
Best provider uptime (30m)100.0%
Vision inputYesNo
ReasoningYesNo
Tool callingYesYes
Released2026-09-222025-03-24
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FAQ

Which is cheaper, Claude Opus 5.5 or DeepSeek V3 0324?

DeepSeek V3 0324 is 18.3× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs DeepSeek V3 0324: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. DeepSeek V3 0324: 163,840 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, DeepSeek V3 0324 ≈ $1,000.

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