GPT vs Claude: 2025 LLM API Deep Comparison

When choosing an LLM API, GPT and Claude are two of the most popular options. This article compares these leading AI models across multiple dimensions to help you make an informed decision.

Model Overview Comparison

FeatureGPT-4Claude 3
CompanyOpenAIAnthropic
Latest VersionGPT-4 TurboClaude 3 Opus
Context window128K tokens200K tokens
Multimodal capability✅ Images, Code✅ Images, Documents
API response speedFastVery fast

Performance Comparison Tests

GPT-4 Performance

Code Generation95%
Creative writing92%
Logical reasoning88%
Mathematics90%

Claude 3 Performance

Code Generation93%
Creative writing94%
Logical reasoning91%
Mathematics87%

Pricing Comparison

GPT-4 Pricing

GPT-4 (8K)$0.03/1K tokens (input)
$0.06/1K tokens (output)
GPT-4 Turbo$0.01/1K tokens (input)
$0.03/1K tokens (output)
GPT-3.5 Turbo$0.0005/1K tokens (input)
$0.0015/1K tokens (output)

Claude Pricing

Claude 3 Opus$0.015/1K tokens (input)
$0.075/1K tokens (output)
Claude 3 Sonnet$0.003/1K tokens (input)
$0.015/1K tokens (output)
Claude 3 Haiku$0.00025/1K tokens (input)
$0.00125/1K tokens (output)

💡 Cost Optimization Tip: Use GPT-3.5 Turbo or Claude Haiku for simple tasks, choose GPT-4 Turbo or Claude Sonnet for complex tasks, and reserve GPT-4 or Claude Opus for when the highest quality is required.

Feature Comparison

GPT-4 Advantages

  • ✓
    Plugin ecosystem

    Rich third-party plugin support

  • ✓
    Code interpreter

    Execute Python code and generate charts

  • ✓
    DALL·E integration

    Native image generation capability

  • ✓
    Function calling

    Structured output and tool use

Claude Advantages

  • ✓
    Ultra-long context

    Process up to 200K tokens

  • ✓
    Constitutional AI

    Safer and more ethical responses

  • ✓
    Document analysis

    Excellent PDF and document understanding

  • ✓
    Conversation memory

    Better context retention

Recommended Application Scenarios

Use GPT-4 when you need:

  • →Code development and debugging
  • →Data analysis and visualization
  • →Applications requiring plugins
  • →Image generation and processing
  • →API integration development
  • →Technical documentation writing

Use Claude when you need:

  • →Long document analysis and summarization
  • →Creative writing and content creation
  • →Academic research and paper writing
  • →Sensitive content handling
  • →Customer service conversations
  • →Legal and compliance documents

Practical Usage Comparison

Response Speed Tests

Simple query (<100 tokens)
GPT-4: 0.8s
Claude: 0.6s
Medium task (500 tokens)
GPT-4: 3.2s
Claude: 2.8s
Long text processing (2000 tokens)
GPT-4: 12.5s
Claude: 10.2s

Accuracy Scores

Factual Q&A
GPT-4: 9.2/10
Claude: 9.0/10
Logical reasoning
GPT-4: 8.8/10
Claude: 9.1/10
Creative generation
GPT-4: 9.0/10
Claude: 9.3/10

Selection Guidance

Choose GPT-4 if you need:

  • ✅ Best-in-class code generation
  • ✅ Rich ecosystem and plugins
  • ✅ Image generation and processing
  • ✅ Mature API and documentation
  • ✅ Math and scientific computing

Choose Claude if you need:

  • ✅ Ultra-long document processing
  • ✅ Safer content generation
  • ✅ Excellent conversational ability
  • ✅ Faster response speed
  • ✅ Better privacy protection

Unified Access to Multiple LLM APIs

LLM API provides a unified interface that lets you easily switch between and use top LLMs like GPT and Claude, choosing the best model for each scenario to achieve optimal cost-effectiveness.

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