DeepSeek V3 vs Claude Sonnet 4.5

Comprehensive comparison between DeepSeek's DeepSeek V3 and Anthropic's Claude Sonnet 4.5. Compare pricing, performance, features, and user reviews.

deepseek vs claudeopen source vs closed ai

DeepSeek V3

DeepSeek

Chinese AI rising star, priced at 1/100 of Claude. HN users praise its coding ability approaching top closed-source models with unbeatable value. Ideal for cost-sensitive scenarios and large-scale API calls.

$0.32/$0.8899999999999999per M tokens
Details

Claude Sonnet 4.5

Anthropic

Anthropic's best value flagship, coding ability close to Opus at 1/5 the price. HN users praise its performance on daily coding tasks, popular choice for Cursor and similar tools.

$3/$15per M tokens
Details

Specs Comparison

SpecificationDeepSeek V3Claude Sonnet 4.5
Context Window128K200K
Max Output32K64K
Input (per 1M tokens)$0.32$3.00
Output (per 1M tokens)$0.89$15.00
Reasoning
Open Source

Scenario Score Comparison

Coding
82
vs
91
Writing
75
vs
84
Translation
85
vs
84
Data Analysis
80
vs
85
Conversation
80
vs
87
Image Gen
50
vs
70
Research
80
vs
85
App Building
80
vs
93

DeepSeek V3

Pros

  • + Extremely low price
  • + Open source & self-hostable
  • + Strong coding ability
  • + Fast inference

Cons

  • − No multimodal
  • − Chinese-centric
  • − Service stability unproven

Claude Sonnet 4.5

Pros

  • + Excellent value
  • + Strong coding ability
  • + Fast response
  • + More generous quotas

Cons

  • − Less capable than Opus for complex tasks
  • − Slightly weaker creative writing

Recommendation

Choose DeepSeek V3 if you:

  • • Need extremely low price
  • • Need open source & self-hostable
  • • Need strong coding ability

Choose Claude Sonnet 4.5 if you:

  • • Need excellent value
  • • Need strong coding ability
  • • Need fast response

Based on scores across 8 scenarios, Claude Sonnet 4.5 performs better overall.

DeepSeek V3 Details Claude Sonnet 4.5 Details

Want to compare other models?

Custom Comparison