DeepSeek V4 Pro vs Grok 4.3Benchmark Comparison 2026

Objective comparison based on public benchmarks updated weekly: Intelligence Index, Chatbot Arena ELO, pricing and speed.

Overall winner (2026)

DeepSeek V4 Pro

4 of 7 criteria won

DeepSeek

DeepSeek V4 Pro

Winner

ELO Arena

1458

Intelligence Index

53.2

Coding Index

70.0

4 criteria won

View full profile

xAI

Grok 4.3

Intelligence Index

36.3

Coding Index

69.9

3 criteria won

View full profile

Detailed Comparison

CritérioDeepSeek V4 ProGrok 4.3
Chatbot Arena ELO1458
Intelligence Index (AA)53.236.3
Coding Index (AA)70.069.9
Input price ($/1M tok)$1.32$1.25
Output price ($/1M tok)$3.96$2.50
Context window1.0M tokens1.0M tokens
Speed (tokens/s)54 tok/s134 tok/s

✓ = winner in this criterion • Source: Artificial Analysis, LMArena, official APIs • Updated weekly

Technical Specifications

DeepSeek V4 Pro

Company
DeepSeek
Context window
1.0M tokens
Input ($/1M tok)
$1.32
Output ($/1M tok)
$3.96
Speed
54 tok/s
Release
Aug 2026
Multimodal
No
Open Source
Yes
Official website
Visit

Grok 4.3

Company
xAI
Context window
1.0M tokens
Input ($/1M tok)
$1.25
Output ($/1M tok)
$2.50
Speed
134 tok/s
Release
Apr 2026
Multimodal
Yes
Open Source
No
Official website
Visit

When to use DeepSeek V4 Pro vs Grok 4.3?

Choosing between DeepSeek V4 Pro and Grok 4.3 depends on your use case, budget and technical requirements. Below, a practical guide based on benchmark data and each model's specifications.

Use DeepSeek V4 Pro when:

DeepSeek · Text · Open Source

  • High-volume token projects — at $1.32/1M input tokens, the cost per call is low enough for production use at scale
  • Self-hosted projects with privacy requirements — ideal for sensitive data that cannot leave your own infrastructure
  • Long document analysis — 1.0M tokens context window allows processing books, legal databases and extensive logs
  • AI agents with tool calling — workflow automation, external API integration and data pipelines
View full DeepSeek V4 Pro profile

Use Grok 4.3 when:

xAI · Multimodal

  • High-volume token projects — at $1.25/1M input tokens, the cost per call is low enough for production use at scale
  • Processing images, PDFs and visual documents alongside text — useful for analyzing contracts, reports with charts and mixed content
  • Long document analysis — 1.0M tokens context window allows processing books, legal databases and extensive logs
  • API integration in SaaS applications — direct API access with documented SLA
View full Grok 4.3 profile
SWEN Verdict: DeepSeek V4 Pro wins in more objective criteria in this comparison (4 vs 3). For most use cases, DeepSeek V4 Pro offers better aggregate performance — but Grok 4.3 may be preferable if your project prioritizes high-volume token projects.

Frequently Asked Questions

DeepSeek V4 Pro or Grok 4.3: which is better?

DeepSeek V4 Pro wins in 4 of 7 criteria analyzed. Check the full table to choose based on your use case.

Where does this benchmark data come from?

Data is aggregated from Artificial Analysis (Intelligence Index, Coding Index) and Chatbot Arena/LMArena (ELO). Pricing and specs come from official APIs. Updated weekly.

What is the Intelligence Index?

The Intelligence Index is an aggregate score from Artificial Analysis that combines multiple academic benchmarks (MMLU, GPQA, LiveBench, etc.) into a single rating. The higher the score, the more capable the model is at reasoning tasks.

Is DeepSeek V4 Pro cheaper than Grok 4.3?

No. Grok 4.3 is cheaper: $1.25/1M input tokens vs $1.32/1M tokens for DeepSeek V4 Pro — a 6% difference. For high-volume projects, Grok 4.3 can reduce costs substantially.

DeepSeek V4 Pro or Grok 4.3: which has a larger context window?

DeepSeek V4 Pro has the larger context window: 1.0M tokens vs 1.0M tokens. For long document analysis, extensive transcripts or full codebases, the larger context window is a decisive criterion.

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