GPT-6 Luna Pro vs Kimi K2 Thinking

Price, context window & benchmark comparison

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GPT-6 Luna Pro

OpenAI
$0.10 / $0.50
Input / Output · per 1M tokens
VS
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Kimi K2 Thinking

Moonshot AI
$0.60 / $2.50
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT-6 Luna Pro is 5.4× cheaper than Kimi K2 Thinking on a typical 3:1 input/output mix. GPT-6 Luna Pro has the larger context window (1.1M vs 262K).
GPT-6 Luna ProKimi K2 Thinking
Input price / 1M$0.10$0.60
Output price / 1M$0.50$2.50
Blended price (3:1)$0.20$1.07
Cached input / 1M$0.01$0.15
Context window1.1M262K
Max output128K98K
Intelligence index——
Coding index—21
Providers6—
Best provider uptime (30m)100.0%—
Vision inputYesNo
ReasoningYesYes
Tool callingYesYes
Released2026-09-222025-11-06
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-6 Luna Pro or Kimi K2 Thinking?

GPT-6 Luna Pro is 5.4× cheaper than Kimi K2 Thinking on a typical 3:1 input/output mix.

GPT-6 Luna Pro vs Kimi K2 Thinking: which has a bigger context window?

GPT-6 Luna Pro: 1,050,000 tokens. Kimi K2 Thinking: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6 Luna Pro ≈ $450.00, Kimi K2 Thinking ≈ $2,450.

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