Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) | GPT-5.4 (low) |
|---|---|---|
| Input ($/M tokens) | $3.75 | $2.5 |
| Output ($/M tokens) | $15 | $15 |
Data from Artificial Analysis API — 12 benchmarks
GPT-5.4 (low) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.56/M for Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort).
Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) wins 5 out of 12 benchmarks compared to 2 for GPT-5.4 (low). See the detailed benchmark chart above for per-category results.
GPT-5.4 (low) generates tokens faster at 64 tok/s vs 62 tok/s. However, GPT-5.4 (low) has lower time-to-first-token (1.61s vs 58.05s).
Choose based on your priorities: GPT-5.4 (low) for lower cost, Claude Sonnet 4.6 (Adaptive Reasoning, Max Effort) for stronger benchmark performance, and GPT-5.4 (low) for faster generation. For latency-sensitive apps, check the TTFT comparison above.