Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | o3-mini | Claude 4.5 Haiku (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $1.1 | $1 |
| Output ($/M tokens) | $4.4 | $5 |
Data from Artificial Analysis API — 12 benchmarks
o3-mini is cheaper overall. Its blended price (3:1 input/output ratio) is $1.93/M tokens vs $2.00/M for Claude 4.5 Haiku (Reasoning).
Claude 4.5 Haiku (Reasoning) wins 8 out of 12 benchmarks compared to 4 for o3-mini. See the detailed benchmark chart above for per-category results.
o3-mini generates tokens faster at 138 tok/s vs 121 tok/s. o3-mini also has lower time-to-first-token (8.20s vs 13.45s).
Choose based on your priorities: o3-mini for lower cost, Claude 4.5 Haiku (Reasoning) for stronger benchmark performance, and o3-mini for faster generation. For latency-sensitive apps, check the TTFT comparison above.