DeepSeek Reasoner vs DeepSeek V4.1 Flash Marathon
Both have similar output pricing, while DeepSeek V4.1 Flash Marathon offers a larger context window. Choose DeepSeek Reasoner or DeepSeek V4.1 Flash Marathon based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek Reasoner | DeepSeek V4.1 Flash Marathon |
|---|---|---|
| Provider | DeepSeek | Subconscious |
| Input / 1M tokens | $0.14 | $0.14 |
| Output / 1M tokens | $0.28 | $0.28 |
| Context window | 1M | 5M |
| Parameters | — | — |
| Open weights | Yes | Yes |
| Released | Dec 2025 | Sep 2026 |
| GPQA Diamond score | 83.4 | — |
FAQ
Is DeepSeek Reasoner or DeepSeek V4.1 Flash Marathon cheaper?
DeepSeek Reasoner and DeepSeek V4.1 Flash Marathon have comparable output pricing.
Which has the larger context window, DeepSeek Reasoner or DeepSeek V4.1 Flash Marathon?
DeepSeek V4.1 Flash Marathon has the larger context window (5M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.