OpenAI GPT-4o Mini vs. DeepSeek R1 (Reasoner) — Interactive Cost & Performance Calculator
Compare OpenAI GPT-4o Mini vs DeepSeek R1 (Reasoner) side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
OpenAI GPT-4o Mini
Best for: High-volume classification, extraction & chat
DeepSeek R1 (Reasoner)
Best for: Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost
Side-by-Side Technical & Commercial Breakdown: OpenAI GPT-4o Mini vs. DeepSeek R1 (Reasoner)
| Dimension | OpenAI GPT-4o Mini | DeepSeek R1 (Reasoner) |
|---|---|---|
| Provider | OpenAI | OpenRouter / DeepSeek |
| Input Price (per 1M tokens) | $0.150 | $0.550 |
| Output Price (per 1M tokens) | $0.60 | $2.19 |
| Context Window | 128K tokens | 128K tokens |
| Throughput Speed | 145 tok/s | 68 tok/s |
| License / Weights | Proprietary API | Open Weights (MIT) |
| Best Use Case | High-volume classification, extraction & chat | Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost |
Frequently Asked Questions
Which is more cost-effective in 2026: OpenAI GPT-4o Mini or DeepSeek R1 (Reasoner)?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. OpenAI GPT-4o Mini (High-volume classification, extraction & chat) and DeepSeek R1 (Reasoner) (Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost) have different unit economics that cross over as volume scales.
When should an engineering team choose OpenAI GPT-4o Mini over DeepSeek R1 (Reasoner)?
Choose OpenAI GPT-4o Mini when your primary priority is: High-volume classification, extraction & chat. Choose DeepSeek R1 (Reasoner) when you prioritize: Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost.