DeepSeek V4 Flash 0731 vs Nex AGI Nex-N2.5-Pro
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Nex-N2.5-Pro is 1.3× cheaper at a typical mix of 3 input tokens per output token.
- DeepSeek V4 Flash 0731 accepts longer prompts: 1M vs 262K tokens.
- DeepSeek V4 Flash 0731 output costs $0.133 per 1M via Baidu, against the list price of $0.238.
- Nex-N2.5-Pro is the newer model (released 2026-09-08).
| DeepSeek V4 Flash 0731 | Nex-N2.5-Pro | |
|---|---|---|
| Vendor | DeepSeek | Nex AGI |
| Released | 2026-07-31 | 2026-09-08 |
| Input / 1M | $0.119 | $0.075 |
| Output / 1M | $0.238 | $0.25 |
| Cached input / 1M | $0.024 | $0.015 |
| Blended / 1M (3:1) | $0.149 | $0.119 |
| Context | 1M | 262K |
| Max output | 944K | 236K |
| Accepts | text | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 25 | 1 |
| Cheapest provider, output | $0.133 | $0.25 |
| Best provider uptime, 24 h | 100% | 99.86% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | — |
Cost calculator
DeepSeek V4 Flash 0731
$10.71 per month$0.36 per day
Nex-N2.5-Pro
$8.25 per month$0.28 per day
Nex-N2.5-Pro saves $2.46 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare DeepSeek V4 Flash 0731 with
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