SIDE BY SIDE
R1 0528 vs DeepSeek V4 Pro 0423
Both are DeepSeek models. DeepSeek V4 Pro 0423 was added to OpenRouter on 2026-04-24, R1 0528 on 2025-05-28.
| Field | R1 0528 | DeepSeek V4 Pro 0423 |
|---|---|---|
| Provider | DeepSeek | DeepSeek |
| Family | DeepSeek | DeepSeek |
| Province | The High Peaks | The High Peaks |
| Context window | 164K tokens | 1.05M tokens |
| Maximum output | 33K tokens | 384K tokens |
| Input / 1M tokens | $0.500 | $0.260 |
| Output / 1M tokens | $2.15 | $0.510 |
| Accepts | text | text |
| Produces | text | text |
| Reasoning | Yes | Yes |
| Tool use | Yes | Yes |
| Added to OpenRouter | 2025-05-28 | 2026-04-24 |
| Model ID | deepseek/deepseek-r1-0528 | deepseek/deepseek-v4-pro |
Questions and answers
Which is cheaper, R1 0528 or DeepSeek V4 Pro 0423?
DeepSeek V4 Pro 0423 costs less for both input ($0.260 vs $0.500) and output ($0.510 vs $2.15) per million tokens. On input, DeepSeek V4 Pro 0423 is 48% cheaper.
Which has the larger context window?
DeepSeek V4 Pro 0423: 1.05M tokens against 164K for R1 0528 (6.4× as long).
What can one do that the other cannot?
Nothing among reasoning, tool use and image input: both support reasoning and tool use.
Answers are computed from the 2026-10-24 catalog snapshot.