DeepSeek V3 (API) vs. DeepSeek R1 (Reasoner) — Interactive Cost & Performance Calculator
Compare DeepSeek V3 (API) vs DeepSeek R1 (Reasoner) side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
DeepSeek V3 (API)
Best for: Cost-efficient math, coding & structured JSON tasks
DeepSeek R1 (Reasoner)
Best for: Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost
Side-by-Side Technical & Commercial Breakdown: DeepSeek V3 (API) vs. DeepSeek R1 (Reasoner)
| Dimension | DeepSeek V3 (API) | DeepSeek R1 (Reasoner) |
|---|---|---|
| Provider | DeepSeek / Fireworks | OpenRouter / DeepSeek |
| Input Price (per 1M tokens) | $0.270 | $0.550 |
| Output Price (per 1M tokens) | $1.10 | $2.19 |
| Context Window | 128K tokens | 128K tokens |
| Throughput Speed | 90 tok/s | 68 tok/s |
| License / Weights | Open Weights (MIT) | Open Weights (MIT) |
| Best Use Case | Cost-efficient math, coding & structured JSON tasks | Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost |
Frequently Asked Questions
Which is more cost-effective in 2026: DeepSeek V3 (API) or DeepSeek R1 (Reasoner)?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. DeepSeek V3 (API) (Cost-efficient math, coding & structured JSON tasks) 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 DeepSeek V3 (API) over DeepSeek R1 (Reasoner)?
Choose DeepSeek V3 (API) when your primary priority is: Cost-efficient math, coding & structured JSON tasks. Choose DeepSeek R1 (Reasoner) when you prioritize: Chain-of-thought math, architecture & algorithm reasoning at 80% lower cost.