Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Claude 3 Opus | GPT-5.5 (high) |
|---|---|---|
| Input ($/M tokens) | $18.75 | $5 |
| Output ($/M tokens) | $75 | $30 |
Data from Artificial Analysis API — 12 benchmarks
GPT-5.5 (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $11.25/M tokens vs $32.81/M for Claude 3 Opus.
GPT-5.5 (high) wins 7 out of 12 benchmarks compared to 3 for Claude 3 Opus. See the detailed benchmark chart above for per-category results.
GPT-5.5 (high) generates tokens faster at 61 tok/s vs 0 tok/s. Claude 3 Opus also has lower time-to-first-token (0.00s vs 19.21s).
Choose based on your priorities: GPT-5.5 (high) for lower cost, GPT-5.5 (high) for stronger benchmark performance, and GPT-5.5 (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.