Anthropic: Claude Opus 4.5 vs OpenAI: GPT-5.4 Pro
Side-by-side comparison of Anthropic: Claude Opus 4.5 and OpenAI: GPT-5.4 Pro. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
strong confidenceOpenAI: GPT-5.4 Pro leads overall
OpenAI: GPT-5.4 Pro leads clearly, winning on 3 of 5 dimensions. Choose OpenAI: GPT-5.4 Pro unless your workflow specifically requires Anthropic: Claude Opus 4.5's advantages.
Best for with Anthropic: Claude Opus 4.5
Best for with OpenAI: GPT-5.4 Pro
Side-by-side
Technical specifications
| Anthropic: Claude Opus 4.5 | OpenAI: GPT-5.4 Pro | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input price | $5/M | $30/M |
| Output price | $25/M | $180/M |
| Context window | 200K | 1.1M |
| Max output | 64K | 128K |
| Capabilities | Tool useVisionReasoning | Tool useVisionReasoning |
| Released | Nov 24, 2025 | Mar 5, 2026 |
Scoring breakdown
How each dimension compares
Price
Anthropic: Claude Opus 4.5 leadsAnthropic: Claude Opus 4.5
$5/M in / $25/M out
OpenAI: GPT-5.4 Pro
$30/M in / $180/M out
Context Window
OpenAI: GPT-5.4 Pro leadsAnthropic: Claude Opus 4.5
200K
OpenAI: GPT-5.4 Pro
1.1M
Capabilities
Anthropic: Claude Opus 4.5
3/4 features
OpenAI: GPT-5.4 Pro
3/4 features
Max Output
OpenAI: GPT-5.4 Pro leadsAnthropic: Claude Opus 4.5
64K
OpenAI: GPT-5.4 Pro
128K
Release Date
OpenAI: GPT-5.4 Pro leadsAnthropic: Claude Opus 4.5
Nov 24, 2025
OpenAI: GPT-5.4 Pro
Mar 5, 2026
Related comparisons
Google: Gemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT-5.4 Pro
flagship tier · Cross-provider
Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.4 Pro
flagship tier · Cross-provider
Anthropic: Claude Sonnet 4.6 vs OpenAI: GPT-5.4 Pro
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs OpenAI: GPT-5.4 Pro
flagship tier · Cross-provider