Model comparison · text
DeepSeek-R1 vs DeepSeek-V4-Flash
Symmetrical, primary-source facts with unknown values left visible. No winner is assigned without comparable measurements.
FieldAt a glance
DeepSeek · activeDeepSeek-R1Verified Aug 28, 2026
DeepSeek · activeDeepSeek-V4-FlashVerified Aug 28, 2026
Technical differences
Side-by-side facts
| Field | DeepSeek-R1 | DeepSeek-V4-Flash |
|---|---|---|
| Developer | DeepSeek | DeepSeek |
| Family | Deepseek R1 | Deepseek V4 Flash |
| Model | DeepSeek-R1 | DeepSeek-V4-Flash |
| Version | DeepSeek-R1 | DeepSeek-V4-Flash |
| Lifecycle | active | active |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 163840 | 1048576 |
| Total parameters | 684531386000 | 290944616402 |
| Active parameters | 37000000000 | 13000000000 |
| License | mit | mit |
| Open weights | Yes | Yes |
| API available | Yes | Yes |
| Self-hostable | Yes | Yes |
| Capabilities | chat, generation, reasoning | chat, generation, reasoning |
15 comparable fields · 6 material differences · Pair passes the primary-source comparison gate
Primary benchmark evidence
Comparable performance
No protocol-matched benchmark yet.Results appear here only when both models share the same benchmark version, metric, evaluation protocol, and evidence class.
DeepSeek-R1 capabilities
Input price$0.70
Output price$2.50
Serving providers1
Canonical IDdeepseek-ai/DeepSeek-R1
DeepSeek-V4-Flash capabilities
Input price$0.0868
Output price$0.1736
Serving providers1
Canonical IDdeepseek-ai/DeepSeek-V4-Flash
Internal comparison graph
Related comparisons
Primary evidence