Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | gpt-oss-120b (high) | Claude Opus 4.6 (Non-reasoning, High Effort) |
|---|---|---|
| Input ($/M tokens) | $0.15 | $5 |
| Output ($/M tokens) | $0.6 | $25 |
Data from Artificial Analysis API — 12 benchmarks
gpt-oss-120b (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.26/M tokens vs $10.00/M for Claude Opus 4.6 (Non-reasoning, High Effort).
Claude Opus 4.6 (Non-reasoning, High Effort) wins 6 out of 12 benchmarks compared to 5 for gpt-oss-120b (high). See the detailed benchmark chart above for per-category results.
gpt-oss-120b (high) generates tokens faster at 354 tok/s vs 54 tok/s. gpt-oss-120b (high) also has lower time-to-first-token (0.50s vs 1.04s).
Choose based on your priorities: gpt-oss-120b (high) for lower cost, Claude Opus 4.6 (Non-reasoning, High Effort) for stronger benchmark performance, and gpt-oss-120b (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.