DeepSeek V4 Pro 0423 vs Qwen3.5 Plus 2026-02-15
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
- Qwen3.5 Plus 2026-02-15 is 3.4× cheaper at a typical mix of 3 input tokens per output token.
- Both accept prompts up to 1M tokens.
- DeepSeek V4 Pro 0423 output costs $1.50 per 1M via Relace, against the list price of $3.20.
- DeepSeek V4 Pro 0423's best provider was more reliable over 24 h: 100% vs 99.46%.
- DeepSeek V4 Pro 0423 is the newer model (released 2026-04-24).
| DeepSeek V4 Pro 0423 | Qwen3.5 Plus 2026-02-15 | |
|---|---|---|
| Vendor | DeepSeek | Qwen |
| Released | 2026-04-24 | 2026-02-16 |
| Input / 1M | $1.60 | $0.26 |
| Output / 1M | $3.20 | $1.56 |
| Cached input / 1M | $0.135 | — |
| Blended / 1M (3:1) | $2.00 | $0.585 |
| Context | 1M | 1M |
| Max output | 393K | 66K |
| Accepts | text | text, image, video |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 15 | 1 |
| Cheapest provider, output | $1.50 | $1.56 |
| Best provider uptime, 24 h | 100% | 99.46% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
DeepSeek V4 Pro 0423
$144 per month$4.80 per day
Qwen3.5 Plus 2026-02-15
$39.00 per month$1.30 per day
Qwen3.5 Plus 2026-02-15 saves $105 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare DeepSeek V4 Pro 0423 with
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