Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-5.6 Terra (max) | Claude 4.5 Sonnet (Non-reasoning) |
|---|---|---|
| Input ($/M tokens) | $2.5 | $3 |
| Output ($/M tokens) | $15 | $15 |
Data from Artificial Analysis API — 12 benchmarks
GPT-5.6 Terra (max) is cheaper overall. Its blended price (3:1 input/output ratio) is $5.63/M tokens vs $6.00/M for Claude 4.5 Sonnet (Non-reasoning).
GPT-5.6 Terra (max) wins 7 out of 12 benchmarks compared to 4 for Claude 4.5 Sonnet (Non-reasoning). See the detailed benchmark chart above for per-category results.
GPT-5.6 Terra (max) generates tokens faster at 163 tok/s vs 54 tok/s. However, Claude 4.5 Sonnet (Non-reasoning) has lower time-to-first-token (1.40s vs 62.31s).
Choose based on your priorities: GPT-5.6 Terra (max) for lower cost, GPT-5.6 Terra (max) for stronger benchmark performance, and GPT-5.6 Terra (max) for faster generation. For latency-sensitive apps, check the TTFT comparison above.