DeepSeek V4.1 Flash 1017 vs GPT-6 Luna

Price, context window & benchmark comparison

DeepSeek V4.1 Flash 1017

DeepSeek

$0.15 / $0.60

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 24% cheaper than DeepSeek V4.1 Flash 1017 on a typical 3:1 input/output mix. GPT-6 Luna has the larger context window (1.1M vs 1M).

	DeepSeek V4.1 Flash 1017	GPT-6 Luna
Input price / 1M	$0.15	$0.10
Output price / 1M	$0.60	$0.50
Blended price (3:1)	$0.26	$0.20
Cached input / 1M	$0.003	$0.01
Context window	1M	1.1M
Max output	393K	128K
Intelligence index	—	27.8
Coding index	—	—
Providers	42	7
Best provider uptime (30m)	100.0%	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-10-17	2026-09-22
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4.1 Flash 1017 or GPT-6 Luna?

GPT-6 Luna is 24% cheaper than DeepSeek V4.1 Flash 1017 on a typical 3:1 input/output mix.

DeepSeek V4.1 Flash 1017 vs GPT-6 Luna: which has a bigger context window?

DeepSeek V4.1 Flash 1017: 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 V4.1 Flash 1017 ≈ $600.00, GPT-6 Luna ≈ $450.00.

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