OpenAI o3-mini vs. Claude 3.7 Sonnet — Interactive Cost & Performance Calculator
Compare OpenAI o3-mini vs Claude 3.7 Sonnet side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
OpenAI o3-mini
Best for: Fast STEM reasoning, math, and unit-tested code generation
Claude 3.7 Sonnet
Best for: Hybrid extended thinking, full-stack coding & autonomous tool use
Side-by-Side Technical & Commercial Breakdown: OpenAI o3-mini vs. Claude 3.7 Sonnet
| Dimension | OpenAI o3-mini | Claude 3.7 Sonnet |
|---|---|---|
| Provider | OpenAI | Anthropic / OpenRouter |
| Input Price (per 1M tokens) | $1.100 | $3.000 |
| Output Price (per 1M tokens) | $4.40 | $15.00 |
| Context Window | 200K tokens | 200K tokens |
| Throughput Speed | 95 tok/s | 84 tok/s |
| License / Weights | Proprietary API | Proprietary API |
| Best Use Case | Fast STEM reasoning, math, and unit-tested code generation | Hybrid extended thinking, full-stack coding & autonomous tool use |
Frequently Asked Questions
Which is more cost-effective in 2026: OpenAI o3-mini or Claude 3.7 Sonnet?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. OpenAI o3-mini (Fast STEM reasoning, math, and unit-tested code generation) and Claude 3.7 Sonnet (Hybrid extended thinking, full-stack coding & autonomous tool use) have different unit economics that cross over as volume scales.
When should an engineering team choose OpenAI o3-mini over Claude 3.7 Sonnet?
Choose OpenAI o3-mini when your primary priority is: Fast STEM reasoning, math, and unit-tested code generation. Choose Claude 3.7 Sonnet when you prioritize: Hybrid extended thinking, full-stack coding & autonomous tool use.