GPT-5 vs Claude Opus 4.5
Comprehensive comparison between OpenAI's GPT-5 and Anthropic's Claude Opus 4.5. Compare pricing, performance, features, and user reviews.
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.
Claude Opus 4.5
AnthropicAnthropic's flagship model, widely recognized as the top coding model. Excels at complex refactoring, large codebase comprehension, and agentic coding. Claude Code makes it the go-to choice for professional developers.
Specs Comparison
| Specification | GPT-5 | Claude Opus 4.5 |
|---|---|---|
| Context Window | 400K | 200K |
| Max Output | 128K | 64K |
| Input (per 1M tokens) | $1.25 | $5.00 |
| Output (per 1M tokens) | $10.00 | $25.00 |
| Reasoning | ||
| Open Source |
Scenario Score Comparison
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
Claude Opus 4.5
Pros
- + Top-tier coding ability
- + Highest code quality
- + Strong context understanding
- + Mature Claude Code ecosystem
Cons
- − Highest pricing ($15/1M input)
- − Average response speed
- − Strict quota limits
Recommendation
Choose GPT-5 if you:
- • Need highly competitive pricing
- • Need most comprehensive multimodal
- • Need dall-e integration
Choose Claude Opus 4.5 if you:
- • Need top-tier coding ability
- • Need highest code quality
- • Need strong context understanding
Based on scores across 8 scenarios, GPT-5 performs better overall.
Get Started with GPT-5
💡 Free tier has limited GPT-5 access.
Get Started with Claude Opus 4.5
💡 Free tier uses Sonnet. Upgrade to Pro for Opus.
Want to compare other models?
Custom Comparison