Gemini 3.7 Flash vs GPT-6 Luna

Price, context window & benchmark comparison

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Gemini 3.7 Flash

Google
$0.75 / $3.75
Input / Output · per 1M tokens
VS
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GPT-6 Luna

OpenAI
$0.10 / $0.50
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT-6 Luna is 7.5× cheaper than Gemini 3.7 Flash on a typical 3:1 input/output mix. Gemini 3.7 Flash scores higher on the Artificial Analysis Intelligence Index (39.1 vs 37.3). GPT-6 Luna has the larger context window (1.1M vs 1M).
Gemini 3.7 FlashGPT-6 Luna
Input price / 1M$0.75$0.10
Output price / 1M$3.75$0.50
Blended price (3:1)$1.50$0.20
Cached input / 1M$0.075$0.01
Context window1M1.1M
Max output66K128K
Intelligence index39.137.3
Coding index76.1—
Providers67
Best provider uptime (30m)99.9%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-08-132026-09-22
Retirement——

Cost calculator

FAQ

Which is cheaper, Gemini 3.7 Flash or GPT-6 Luna?

GPT-6 Luna is 7.5× cheaper than Gemini 3.7 Flash on a typical 3:1 input/output mix.

Gemini 3.7 Flash vs GPT-6 Luna: which has a bigger context window?

Gemini 3.7 Flash: 1,048,576 tokens. GPT-6 Luna: 1,050,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 3.7 Flash ≈ $3,375, GPT-6 Luna ≈ $450.00.

More comparisons

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