GPT-6 Luna Pro vs Solar Pro 3

Price, context window & benchmark comparison

OpenAI

GPT-6 Luna Pro

OpenAI
$0.10 / $0.50
Input / Output · per 1M tokens
VS
Upstage

Solar Pro 3

Upstage
$0.15 / $0.60
Input / Output · per 1M tokens
Compare different models
OpenAI
Upstage
Verdict: GPT-6 Luna Pro is 24% cheaper than Solar Pro 3 on a typical 3:1 input/output mix. GPT-6 Luna Pro has the larger context window (1.1M vs 131K).
GPT-6 Luna ProSolar Pro 3
Input price / 1M$0.10$0.15
Output price / 1M$0.50$0.60
Blended price (3:1)$0.20$0.26
Cached input / 1M$0.01$0.015
Context window1.1M131K
Max output128K118K
Intelligence index7.8
Coding index16.2
Providers6
Best provider uptime (30m)100.0%
Vision inputYesNo
ReasoningYesYes
Tool callingYesYes
Released2026-09-222026-01-27
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FAQ

Which is cheaper, GPT-6 Luna Pro or Solar Pro 3?

GPT-6 Luna Pro is 24% cheaper than Solar Pro 3 on a typical 3:1 input/output mix.

GPT-6 Luna Pro vs Solar Pro 3: which has a bigger context window?

GPT-6 Luna Pro: 1,050,000 tokens. Solar Pro 3: 131,072 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-6 Luna Pro ≈ $450.00, Solar Pro 3 ≈ $600.00.

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