DeepSeek V4 Pro 0423 vs GPT-6 Luna

Price, context window & benchmark comparison

DeepSeek V4 Pro 0423

DeepSeek

$0.94 / $1.88

Input / Output · per 1M tokens

GPT-6 Luna

OpenAI

$0.10 / $0.50

Input / Output · per 1M tokens

Compare different models

Verdict: GPT-6 Luna is 5.9× cheaper than DeepSeek V4 Pro 0423 on a typical 3:1 input/output mix. GPT-6 Luna scores higher on the Artificial Analysis Intelligence Index (37.3 vs 30.4). GPT-6 Luna has the larger context window (1.1M vs 1M).

	DeepSeek V4 Pro 0423	GPT-6 Luna
Input price / 1M	$0.94	$0.10
Output price / 1M	$1.88	$0.50
Blended price (3:1)	$1.17	$0.20
Cached input / 1M	$0.0783	$0.01
Context window	1M	1.1M
Max output	384K	128K
Intelligence index	30.4	37.3
Coding index	59.4	—
Providers	16	7
Best provider uptime (30m)	100.0%	100.0%
Vision input	No	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-04-24	2026-09-22
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4 Pro 0423 or GPT-6 Luna?

GPT-6 Luna is 5.9× cheaper than DeepSeek V4 Pro 0423 on a typical 3:1 input/output mix.

DeepSeek V4 Pro 0423 vs GPT-6 Luna: which has a bigger context window?

DeepSeek V4 Pro 0423: 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: DeepSeek V4 Pro 0423 ≈ $2,819, GPT-6 Luna ≈ $450.00.

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