Claude Opus 5.5 vs Kimi K2.6

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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Kimi K2.6

Moonshot AI
$0.95 / $4.00
Input / Output · per 1M tokens
Compare different models
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Verdict: Kimi K2.6 is 4.7× 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 27). Claude Opus 5.5 has the larger context window (1M vs 262K).
Claude Opus 5.5Kimi K2.6
Input price / 1M$4.00$0.95
Output price / 1M$20.00$4.00
Blended price (3:1)$8.00$1.71
Cached input / 1M$0.20$0.16
Context window1M262K
Max output128K236K
Intelligence index57.627
Coding index—61.8
Providers1122
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-222026-04-20
Retirement——

Cost calculator

FAQ

Which is cheaper, Claude Opus 5.5 or Kimi K2.6?

Kimi K2.6 is 4.7× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs Kimi K2.6: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. Kimi K2.6: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, Kimi K2.6 ≈ $3,900.

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