Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-5.4 (xhigh) | Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) |
|---|---|---|
| Input ($/M tokens) | $2.5 | $3 |
| Output ($/M tokens) | $15 | $15 |
Data from Artificial Analysis API — 12 benchmarks
GPT-5.4 (xhigh) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.00/M for Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort).
GPT-5.4 (xhigh) wins 7 out of 12 benchmarks compared to 0 for Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort). See the detailed benchmark chart above for per-category results.
GPT-5.4 (xhigh) generates tokens faster at 84 tok/s vs 66 tok/s. However, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) has lower time-to-first-token (33.99s vs 147.97s).
Choose based on your priorities: GPT-5.4 (xhigh) for lower cost, GPT-5.4 (xhigh) for stronger benchmark performance, and GPT-5.4 (xhigh) for faster generation. For latency-sensitive apps, check the TTFT comparison above.