Gemini 3.1 Pro Preview vs DeepSeek V4 ProBenchmark Comparison 2026

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

Overall winner (2026)

Gemini 3.1 Pro Preview

4 of 6 criteria won

Google

Gemini 3.1 Pro Preview

Winner

Intelligence Index

57.2

Coding Index

55.5

4 criteria won

View full profile

DeepSeek

DeepSeek V4 Pro

Intelligence Index

51.5

Coding Index

47.5

2 criteria won

View full profile

Detailed Comparison

CritérioGemini 3.1 Pro PreviewDeepSeek V4 Pro
Chatbot Arena ELO
Intelligence Index (AA)57.251.5
Coding Index (AA)55.547.5
GPQA Diamond94.0%91.0%
Input price ($/1M tok)$2.00$0.43
Output price ($/1M tok)$12.00$0.87
Context window1.0M tokens1.0M tokens
Speed (tokens/s)136 tok/s54 tok/s

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

Technical Specifications

Gemini 3.1 Pro Preview

Company
Google
Context window
1.0M tokens
Input ($/1M tok)
$2.00
Output ($/1M tok)
$12.00
Speed
136 tok/s
Release
Feb 2026
Multimodal
Yes
Open Source
No
Official website
Visit

DeepSeek V4 Pro

Company
DeepSeek
Context window
1.0M tokens
Input ($/1M tok)
$0.43
Output ($/1M tok)
$0.87
Speed
54 tok/s
Release
Apr 2026
Multimodal
No
Open Source
Yes
Official website
Visit

When to use Gemini 3.1 Pro Preview vs DeepSeek V4 Pro?

Choosing between Gemini 3.1 Pro Preview and DeepSeek V4 Pro depends on your use case, budget and technical requirements. Below, a practical guide based on benchmark data and each model's specifications.

Use Gemini 3.1 Pro Preview when:

Google · Multimodal

  • Complex reasoning, math and advanced programming — reasoning models are optimized for problems requiring multiple logical steps
  • Processing images, PDFs and visual documents alongside text — useful for analyzing contracts, reports with charts and mixed content
  • Applications with audio input or output — transcription, call analysis and voice assistants
  • 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
  • API integration in SaaS applications — direct API access with documented SLA
View full Gemini 3.1 Pro Preview profile

Use DeepSeek V4 Pro when:

DeepSeek · Text · Open Source

  • High-volume token projects — at $0.435/1M 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
SWEN Verdict: Gemini 3.1 Pro Preview wins in more objective criteria in this comparison (4 vs 2). For most use cases, Gemini 3.1 Pro Preview offers better aggregate performance — but DeepSeek V4 Pro may be preferable if your project prioritizes high-volume token projects.

Frequently Asked Questions

Gemini 3.1 Pro Preview or DeepSeek V4 Pro: which is better?

Gemini 3.1 Pro Preview wins in 4 of 6 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 Gemini 3.1 Pro Preview cheaper than DeepSeek V4 Pro?

No. DeepSeek V4 Pro is cheaper: $0.435/1M input tokens vs $2/1M tokens for Gemini 3.1 Pro Preview — a 360% difference. For high-volume projects, DeepSeek V4 Pro can reduce costs substantially.

Gemini 3.1 Pro Preview or DeepSeek V4 Pro: which has a larger context window?

Gemini 3.1 Pro Preview and DeepSeek V4 Pro have the same context window: 1.0M tokens. For this criterion, the choice should be based on other factors like pricing and quality for your specific use case.

Other Comparisons

claude-opus-4-7 vs gpt-5-5claude-opus-4-7 vs gpt-5-5-proclaude-opus-4-7 vs deepseek-v4-proclaude-opus-4-7 vs deepseek-v3-2claude-opus-4-7 vs gemini-3-1-pro-previewclaude-opus-4-7 vs grok-4-3claude-opus-4-7 vs o4-miniclaude-opus-4-7 vs gpt-5-4gpt-5-5 vs gemini-3-1-pro-previewgpt-5-5 vs grok-4-3gpt-5-5 vs deepseek-v4-progpt-5-5 vs deepseek-v3-2gpt-5-5 vs o4-minigpt-5-5-pro vs claude-opus-4-7gpt-5-5-pro vs gemini-3-1-pro-previewgpt-5-5-pro vs deepseek-v4-progpt-5-5-pro vs grok-4-3gemini-3-1-pro-preview vs claude-opus-4-7gemini-3-1-pro-preview vs grok-4-3deepseek-v4-pro vs grok-4-3deepseek-v4-pro vs deepseek-v3-2deepseek-v3-2 vs grok-4-3deepseek-v3-2 vs gemini-3-1-pro-previewdeepseek-v3-2 vs gemini-3-1-flash-litegrok-4-3 vs gemini-3-1-pro-previewo4-mini vs gemini-3-1-pro-previewo4-mini vs deepseek-v4-proo4-mini vs grok-4-3gemini-3-1-flash-lite vs o4-minigemini-2-5-pro vs claude-opus-4-7gemini-2-5-pro vs gpt-5-5gemini-2-5-pro vs deepseek-v4-proclaude-sonnet-4-6 vs gpt-5-4-miniclaude-sonnet-4-6 vs gemini-3-flash-previewgpt-5-4-pro vs claude-opus-4-7gpt-5-4-pro vs gemini-3-1-pro-previewgrok-4-20 vs claude-opus-4-7grok-4-20 vs gpt-5-5gpt-4o vs claude-opus-4-7gpt-4o vs gemini-2-5-progpt-4o vs deepseek-v3-2gpt-4o vs grok-4-3gpt-4o-mini vs claude-haiku-4-5gpt-4o-mini vs gemini-2-5-flashgpt-4o-mini vs deepseek-v3-2o3 vs claude-opus-4-7o3 vs r1o3 vs gemini-2-5-pror1 vs claude-opus-4-7r1 vs gpt-5-5llama-4-maverick vs claude-opus-4-7llama-4-maverick vs gpt-5-5llama-4-scout vs claude-sonnet-4-6claude-sonnet-4-6 vs claude-opus-4-7claude-sonnet-4-6 vs gemini-2-5-proView all