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 4.5
AnthropicAnthropic'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.
GPT-5
OpenAIOpenAI'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.
Specs Comparison
| Specification | Claude Sonnet 4.5 | GPT-5 |
|---|---|---|
| Context Window | 200K | 400K |
| Max Output | 64K | 128K |
| Input (per 1M tokens) | $3.00 | $1.25 |
| Output (per 1M tokens) | $15.00 | $10.00 |
| Reasoning | ||
| Open Source |
Scenario Score Comparison
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.
Get Started with Claude Sonnet 4.5
💡 Sonnet is available on the free tier.
Get Started with GPT-5
💡 Free tier has limited GPT-5 access.
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