Compare/o3-mini vs Claude 4.5 Haiku (Non-reasoning)

o3-minivsClaude 4.5 Haiku (Non-reasoning)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

OpenAI

o3-mini

Input
$1.1/M
Output
$4.4/M
Speed
138 tok/s
TTFT
8.20s
Anthropic

Claude 4.5 Haiku (Non-reasoning)

Input
$1/M
Output
$5/M
Speed
106 tok/s
TTFT
0.52s

Winner by Category

Cheaper
o3-mini
Faster (tok/s)
o3-mini
Lower Latency
Claude 4.5 Haiku (Non-reasoning)
Benchmarks (5-7)
Claude 4.5 Haiku (Non-reasoning)

Pricing Comparison

Metrico3-miniClaude 4.5 Haiku (Non-reasoning)
Input ($/M tokens)$1.1$1
Output ($/M tokens)$4.4$5
Cost for 1M input + 100K output tokens:
o3-mini$1.54
Claude 4.5 Haiku (Non-reasoning)$1.50

Speed Comparison

Output Speed (tokens/s) — higher is better
o3-mini
138 tok/s
Claude 4.5 Haiku (Non-reasoning)
106 tok/s
Time to First Token (seconds) — lower is better
o3-mini
8.20s
Claude 4.5 Haiku (Non-reasoning)
0.52s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
25.931.1
Coding Index
17.929.6
Math Index
39.0
GPQA Diamond
74.8%64.6%
MMLU-Pro
79.1%80.0%
LiveCodeBench
71.7%51.1%
AIME 2025
39.0%
MATH-500
97.3%
Humanity's Last Exam
8.7%4.3%
SciCode
39.9%34.4%
IFBench
42.0%
TerminalBench
6.8%27.3%
o3-mini5 wins
7 winsClaude 4.5 Haiku (Non-reasoning)

Frequently Asked Questions

Which is cheaper, o3-mini or Claude 4.5 Haiku (Non-reasoning)?

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 (Non-reasoning).

Which model performs better on benchmarks?

Claude 4.5 Haiku (Non-reasoning) wins 7 out of 12 benchmarks compared to 5 for o3-mini. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

o3-mini generates tokens faster at 138 tok/s vs 106 tok/s. However, Claude 4.5 Haiku (Non-reasoning) has lower time-to-first-token (0.52s vs 8.20s).

When should I use o3-mini vs Claude 4.5 Haiku (Non-reasoning)?

Choose based on your priorities: o3-mini for lower cost, Claude 4.5 Haiku (Non-reasoning) for stronger benchmark performance, and o3-mini for faster generation. For latency-sensitive apps, check the TTFT comparison above.