Claude Sonnet 4.5 vs GPT-5

Comprehensive comparison between Anthropic's Claude Sonnet 4.5 and OpenAI's GPT-5. Compare pricing, performance, features, and user reviews.

claude sonnet vs gptsonnet vs gpt-5

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

GPT-5

OpenAI

OpenAI's unified flagship model with built-in routing system that auto-selects optimal sub-models. HN users praise its comprehensive multimodal capabilities and competitive pricing ($1.25 vs Claude $15). However, benchmark chart errors at launch sparked controversy.

$1.25/$10per M tokens
Details

Specs Comparison

SpecificationClaude Sonnet 4.5GPT-5
Context Window200K400K
Max Output64K128K
Input (per 1M tokens)$3.00$1.25
Output (per 1M tokens)$15.00$10.00
Reasoning
Open Source

Scenario Score Comparison

Coding
91
vs
86
Writing
84
vs
92
Translation
84
vs
93
Data Analysis
85
vs
91
Conversation
87
vs
94
Image Gen
70
vs
90
Research
85
vs
89
App Building
93
vs
88

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

GPT-5

Pros

  • + Highly competitive pricing
  • + Most comprehensive multimodal
  • + DALL-E integration
  • + Largest ecosystem

Cons

  • − Coding inferior to Claude Opus
  • − Launch quality issues
  • − Black-box architecture

Recommendation

Choose Claude Sonnet 4.5 if you:

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

Choose GPT-5 if you:

  • • Need highly competitive pricing
  • • Need most comprehensive multimodal
  • • Need dall-e integration

Based on scores across 8 scenarios, GPT-5 performs better overall.

Claude Sonnet 4.5 Details GPT-5 Details

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