GPT-5.6 Luna Pro vs MiniMax M3.1 Flash

Price, context window & benchmark comparison

OpenAI

GPT-5.6 Luna Pro

OpenAI
$0.20 / $1.20
Input / Output · per 1M tokens
VS
MiniMax

MiniMax M3.1 Flash

MiniMax
$0.15 / $0.60
Input / Output · per 1M tokens
Compare different models
OpenAI
MiniMax
Verdict: MiniMax M3.1 Flash is 42% cheaper than GPT-5.6 Luna Pro on a typical 3:1 input/output mix. GPT-5.6 Luna Pro has the larger context window (1.1M vs 1M).
GPT-5.6 Luna ProMiniMax M3.1 Flash
Input price / 1M$0.20$0.15
Output price / 1M$1.20$0.60
Blended price (3:1)$0.45$0.26
Cached input / 1M$0.02$0.015
Context window1.1M1M
Max output128K524K
Intelligence index—29.1
Coding index——
Providers511
Best provider uptime (30m)100.0%100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-07-092026-10-19
Retirement——

Cost calculator

FAQ

Which is cheaper, GPT-5.6 Luna Pro or MiniMax M3.1 Flash?

MiniMax M3.1 Flash is 42% cheaper than GPT-5.6 Luna Pro on a typical 3:1 input/output mix.

GPT-5.6 Luna Pro vs MiniMax M3.1 Flash: which has a bigger context window?

GPT-5.6 Luna Pro: 1,050,000 tokens. MiniMax M3.1 Flash: 1,048,576 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-5.6 Luna Pro ≈ $1,000, MiniMax M3.1 Flash ≈ $600.00.

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