OpenAI o3 Pro vs O3 Mini
Performance benchmarks + pricing comparison — updated April 2026
OpenAI o3 Pro
OpenAITop-tier reasoning model combining o3's coding strength with extended compute. The most powerful OpenAI model for reasoning-heavy coding.
| Input | $20.00/M |
| Output | $80.00/M |
| Context | 200K tokens |
| Best For | Complex algorithm design, system architecture, research coding |
O3 Mini
OpenAIOpenAI's reasoning model at lower cost. Strong at math, coding, and science tasks.
| Input | $1.10/M |
| Output | $4.40/M |
| Context | 200K tokens |
| Best For | Math, science, coding tasks requiring deep reasoning |
| Benchmark | 80/100 |
Cost Comparison by Scenario
Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.
| Scenario | OpenAI o3 Pro | O3 Mini | Savings |
|---|---|---|---|
| Small Script (1K lines) | $3.10 | $0.17 | O3 Mini saves $2.93 (95%) |
| Medium Feature (10K lines) | $23.00 | $1.27 | O3 Mini saves $21.73 (95%) |
| Large Project (50K lines) | $115.00 | $6.33 | O3 Mini saves $108.67 (95%) |
| Code Review (5K lines) | $5.50 | $0.30 | O3 Mini saves $5.20 (95%) |
Verdict
O3 Mini wins on both price and performance — $1.10/M input with a benchmark score of N/A/100.
For most developers, this is the clear choice between these two models.
Compare with Other Models
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Claude Opus 4
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Claude 3.5 Sonnet
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Claude 3.5 Haiku
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Claude 3 Opus
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Claude 3 Sonnet
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