Claude Opus 5.5 vs Mistral Small 3

Price, context window & benchmark comparison

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Claude Opus 5.5

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

Mistral Small 3

Mistral AI
$0.05 / $0.08
Input / Output · per 1M tokens
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Verdict: Mistral Small 3 is 139.1× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 has the larger context window (1M vs 33K).
Claude Opus 5.5Mistral Small 3
Input price / 1M$4.00$0.05
Output price / 1M$20.00$0.08
Blended price (3:1)$8.00$0.0575
Cached input / 1M$0.20
Context window1M33K
Max output128K16K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputYesNo
ReasoningYesNo
Tool callingYesNo
Released2026-09-222025-01-30
Retirement

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FAQ

Which is cheaper, Claude Opus 5.5 or Mistral Small 3?

Mistral Small 3 is 139.1× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs Mistral Small 3: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. Mistral Small 3: 32,768 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, Mistral Small 3 ≈ $140.00.

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