DeepSeek V4 Pro vs Gemini 4 Argon

Official DeepSeek and Google API prices and LMArena scores, checked 2026-10-29. Add up to 2 more models to compare 4.

Highlight differences

Verdict

DeepSeek V4 Pro costs less; Gemini 4 Argon wins more LMArena tasks.

DeepSeek V4 Pro is 1.5x cheaper on input and 2.5x cheaper on output. Gemini 4 Argon scores 100 points higher for chat. Across 5 shared LMArena tasks, Gemini 4 Argon leads 5 to 0. A medium month (20M input + 5M output tokens) costs $46.20 on DeepSeek V4 Pro and $90 on Gemini 4 Argon.

Pick DeepSeek V4 Pro if you want the lower bill ($46.20 vs $90 for a medium month) or you reuse long prompts (cached input $0.044 vs $0.10).
Pick Gemini 4 Argon if you care most about chat (+100), roleplay (+100) and reasoning and math (+100).

Sample month

Medium: 20M input + 5M output tokens a month at list price (short-context rate, no caching or batch discounts).

DeepSeek V4 ProvsGemini 4 Argon

Price per 1M tokens

Input$1.32 (better)$2

Cached input$0.044 (better)$0.10

Output$3.96 (better)$10

Sample month, medium$46.20 (better)$90

Context

Context window1M1M

Quality (LMArena relative score, out of 100)

Coding052 (better)

Chat0100 (better)

Creative writing196 (better)

Roleplay and characters0100 (better)

Reasoning and math0100 (better)

Visionn/an/a

Long documentsn/an/a

Cheap bulk and agentsn/a73

Marked side is better: lower for prices, higher for context and scores. Bars are scaled to the larger of the two.

Spec	DeepSeek V4 Pro	Gemini 4 Argon
Price per 1M tokens
Input	$1.32	$2
Cached input	$0.044	$0.10
Output	$3.96	$10
Blend 3:1	$1.98	$4
Sample month, medium	$46.20	$90
Context
Context window	1M tokens	1M tokens
Quality (LMArena, out of 100)
Coding	0/100 #38 of 50	52/100 #8 of 50
Chat	0/100 #26 of 51	100/100 #1 of 51
Creative writing	1/100 #19 of 51	96/100 #2 of 51
Roleplay and characters	0/100 #20 of 51	100/100 #1 of 51
Reasoning and math	0/100 #38 of 51	100/100 #1 of 51
Vision	Not ranked	Not ranked
Long documents	Not ranked	Not ranked
Cheap bulk and agents	Not ranked	73/100 #6 of 34
Details
Provider	DeepSeek	Google
API model id	`deepseek-v4-pro`	`gemini-4-argon`
Notes	Peak rate. Off-peak is half price.	Launch price through Nov 30, 2026. From Dec 1: $4 in, $20 out.
Sources
Last checked	2026-10-29	2026-10-29
Official pricing	DeepSeek pricing	Google pricing

API prices in USD per 1M tokens from each provider's official pricing page. Blend 3:1 = (3 x input + output) / 4. Sample month = stated input and output tokens at the list price, no caching. Quality: relative score out of 100 on each LMArena leaderboard (100 = top model we price on that board, n/a = not ranked there), data licensed CC BY 4.0. See how we pick.

Where each one ranks on LMArena

Relative score out of 100 on each leaderboard (100 = the top model we price there), with the rank among the models from our API price table that appear on that board.

Coding (Code Arena): DeepSeek V4 Pro #38 of 50 (0/100), Gemini 4 Argon #8 of 50 (52/100)
Chat (Text Arena): DeepSeek V4 Pro #26 of 51 (0/100), Gemini 4 Argon #1 of 51 (100/100)
Creative writing (Text Arena creative writing): DeepSeek V4 Pro #19 of 51 (1/100), Gemini 4 Argon #2 of 51 (96/100)
Roleplay and characters (Text Arena multi-turn): DeepSeek V4 Pro #20 of 51 (0/100), Gemini 4 Argon #1 of 51 (100/100)
Reasoning and math (Text Arena math): DeepSeek V4 Pro #38 of 51 (0/100), Gemini 4 Argon #1 of 51 (100/100)
Vision (Vision Arena): DeepSeek V4 Pro not ranked, Gemini 4 Argon not ranked
Long documents (Document Arena): DeepSeek V4 Pro not ranked, Gemini 4 Argon not ranked
Cheap bulk and agents (Agent Arena): DeepSeek V4 Pro not ranked, Gemini 4 Argon #6 of 34 (73/100)

Pricing details from the official pages

DeepSeek V4 Pro lists $1.32 input, $3.96 output, $0.044 cached input per 1M tokens on DeepSeek pricing. Gemini 4 Argon lists $2 input, $10 output, $0.10 cached input per 1M tokens on Google pricing. Prices checked 2026-10-29.

DeepSeek V4 Pro: Peak rate. Off-peak is half price.
Gemini 4 Argon: Launch price through Nov 30, 2026. From Dec 1: $4 in, $20 out.

Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $4.62 vs $9. Medium (20M input + 5M output tokens): $46.20 vs $90. Heavy (200M input + 50M output tokens): $462 vs $900.

FAQ

Is DeepSeek V4 Pro cheaper than Gemini 4 Argon?

DeepSeek V4 Pro costs $1.32 input and $3.96 output per 1M tokens; Gemini 4 Argon costs $2 and $10. For a medium month (20M input + 5M output tokens) DeepSeek V4 Pro is cheaper: $46.20 vs $90.

Which is better for coding, DeepSeek V4 Pro or Gemini 4 Argon?

On LMArena's Code Arena DeepSeek V4 Pro scores 0/100 (#38 of 50) and Gemini 4 Argon 52/100 (#8 of 50), so Gemini 4 Argon is ahead by 52 points.

Which has the bigger context window?

DeepSeek V4 Pro: 1M tokens. Gemini 4 Argon: 1M tokens. Both list the same window.

How much do DeepSeek V4 Pro and Gemini 4 Argon cost per month?

Light (2M input + 0.5M output tokens): $4.62 vs $9. Medium (20M input + 5M output tokens): $46.20 vs $90. Heavy (200M input + 50M output tokens): $462 vs $900. Pick your own token counts in the plan vs API calculator.

Where do these numbers come from?

Prices come from each provider's official pricing page, checked daily. Quality is the relative score on the LMArena leaderboard dataset, licensed CC BY 4.0. Where a model is not ranked we show n/a.

DeepSeek V4 Pro vs Gemini 4 Argon

Where each one ranks on LMArena

Pricing details from the official pages

FAQ

Sources

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