Claude Opus 4.5 vs GPT-5.4
GPT-5.4 leads in 5 of 8 categories
Arena ELO
GPT-5.4
Cheaper
GPT-5.4
Faster
GPT-5.4
Detailed Comparison
| Category | Claude Opus 4.5 | GPT-5.4 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Context Window | 200K | 1M WIN |
| Input Price ($/1M) | $5 | $3 WIN |
| Output Price ($/1M) | $25 | $15 WIN |
| Arena ELO | 1380 | 1560 WIN |
| Coding | 80.9% SWE-bench | unknown |
| Reasoning | unknown | unknown |
| Speed (tokens/sec) | ~35 t/s | ~50 t/s WIN |
| Open Source | No | No |
Frequently Asked Questions
Which is cheaper, Claude Opus 4.5 or GPT-5.4?
GPT-5.4 is approximately 40% cheaper than Claude Opus 4.5 per million tokens.
Which is better for coding, Claude Opus 4.5 or GPT-5.4?
Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while GPT-5.4 scores unknown.
Which has a larger context window?
Claude Opus 4.5 supports 200K context, while GPT-5.4 supports 1M.
Is Claude Opus 4.5 or GPT-5.4 open source?
Claude Opus 4.5 is proprietary. GPT-5.4 is proprietary.
Which ranks higher on the Chatbot Arena leaderboard?
GPT-5.4 ranks higher with ELO 1560 vs 1380.
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