R1 vs Gemini 2.5 Flash
Both have similar output pricing, while Gemini 2.5 Flash offers a larger context window. Choose R1 or Gemini 2.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | R1 | Gemini 2.5 Flash |
|---|---|---|
| Provider | DeepSeek | |
| Input / 1M tokens | $0.70 | $0.30 |
| Output / 1M tokens | $2.50 | $2.50 |
| Context window | 64K | 1M |
| Parameters | 671B | — |
| Open weights | Yes | No |
| Released | Jan 2025 | Jun 2025 |
| SWE-bench Verified score | — | 28.7 |
| LMArena (Chatbot Arena) Elo score | — | 1417 |
| LMArena Vision Elo score | — | 1235 |
| FrontierMath score | — | 4.8 |
| Epoch Capabilities Index score | — | 143 |
FAQ
Is R1 or Gemini 2.5 Flash cheaper?
R1 and Gemini 2.5 Flash have comparable output pricing.
Which has the larger context window, R1 or Gemini 2.5 Flash?
Gemini 2.5 Flash has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.