Updated March 26, 2026· Based on independent benchmark data
Claude Opus 4.5 (Reasoning) and GPT-5.4 mini (xhigh) are virtually tied on intelligence (49.7 vs 48.1). GPT-5.4 mini (xhigh) is 6.7x cheaper at $0.75/1M tokens vs $5.00/1M. For speed, GPT-5.4 mini (xhigh) wins at 218 tok/s vs 57 tok/s.
| Metric | Claude Opus 4.5 (Reasoning) | GPT-5.4 mini (xhigh) |
|---|---|---|
| Intelligence Score | 49.7 | 48.1 |
| Coding Score | 47.8 | 51.5 |
| Math Score | 91.3 | N/A |
| Speed (tok/s) | 57 tok/s | 218 tok/s |
| Latency (TTFT) | 10.41s | 7.45s |
| Input Price / 1M tokens | $5.00 | $0.75 |
| Output Price / 1M tokens | $25 | $4.50 |
| Context Window | N/A |
Claude Opus 4.5 (Reasoning) and GPT-5.4 mini (xhigh) perform similarly on overall intelligence, scoring 49.7 and 48.1 respectively. For coding tasks, GPT-5.4 mini (xhigh) has the edge with a coding score of 51.5 vs 47.8.
GPT-5.4 mini (xhigh) generates output significantly faster at 218 tok/s compared to Claude Opus 4.5 (Reasoning)'s 57 tok/s, making it 3.8x faster for streaming responses. Time to first token is 7.45s for GPT-5.4 mini (xhigh) vs 10.41s for Claude Opus 4.5 (Reasoning), which affects perceived responsiveness in interactive applications.
GPT-5.4 mini (xhigh) is more affordable at $0.75/1M input tokens ($4.50/1M output), while Claude Opus 4.5 (Reasoning) costs $5.00/1M input ($25/1M output). That makes Claude Opus 4.5 (Reasoning) 6.7x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, Claude Opus 4.5 (Reasoning) would cost approximately $30.00/month vs $4.50/month for GPT-5.4 mini (xhigh) in input costs alone.
Choose GPT-5.4 mini (xhigh) when you need stronger coding performance (51.5), faster output (218 tok/s), lower cost.
GPT-5.4 mini (xhigh) scores higher on coding benchmarks (51.5 vs 47.8), making it the better choice for programming tasks.
GPT-5.4 mini (xhigh) is cheaper at $0.75/1M input tokens vs $5.00/1M for Claude Opus 4.5 (Reasoning).
GPT-5.4 mini (xhigh) is faster, producing output at 218 tok/s compared to Claude Opus 4.5 (Reasoning)'s 57 tok/s.
No, Claude Opus 4.5 (Reasoning) does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Text |
| Output Modalities | Text | Text |
| Free Tier | No | No |
Both models perform similarly on intelligence benchmarks. Choose based on specific needs: pricing, speed, context window, or provider ecosystem.