DeepSeek V3.1 Terminus vs DeepSeek V4.1 Flash 1017 (Inference.net)
Both have similar output pricing, while DeepSeek V4.1 Flash 1017 (Inference.net) offers a larger context window. Choose DeepSeek V3.1 Terminus or DeepSeek V4.1 Flash 1017 (Inference.net) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | DeepSeek V3.1 Terminus | DeepSeek V4.1 Flash 1017 (Inference.net) |
|---|---|---|
| Provider | DeepSeek | LLM Gateway |
| Input / 1M tokens | $0.27 | $0.30 |
| Output / 1M tokens | $1.00 | $1.00 |
| Context window | 164K | 262K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Oct 2026 |
| LMArena (Chatbot Arena) Elo score | 1419 | — |
FAQ
Is DeepSeek V3.1 Terminus or DeepSeek V4.1 Flash 1017 (Inference.net) cheaper?
DeepSeek V3.1 Terminus and DeepSeek V4.1 Flash 1017 (Inference.net) have comparable output pricing.
Which has the larger context window, DeepSeek V3.1 Terminus or DeepSeek V4.1 Flash 1017 (Inference.net)?
DeepSeek V4.1 Flash 1017 (Inference.net) has the larger context window (262K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.