DeepSeek-V3 vs DeepSeek-V4-Flash-Base
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | DeepSeek-V3 | DeepSeek-V4-Flash-Base |
|---|---|---|
| Developer | DeepSeek | DeepSeek |
| Family | Deepseek V3 | Deepseek V4 Flash Base |
| Model | DeepSeek-V3 | DeepSeek-V4-Flash-Base |
| Version | DeepSeek-V3 | DeepSeek-V4-Flash-Base |
| Lifecycle | active | active |
| Released | 2024-12-26 | 2026-04-24 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 163,840 | 1,048,576 |
| Total parameters | 684,531,386,000 | 292,021,347,282 |
| Active parameters | 37,000,000,000 | Unknown |
| License | Unknown | Unknown |
| Open weights | Yes | Yes |
| API available | Yes | Unknown |
| Self-hostable | Yes | Yes |
| Provider access | Deepinfra (Standard), Openrouter (Standard) | Unknown |
| Capabilities | chat, generation | generation |
13 comparable fields · 7 material differences · Pair passes the primary-source comparison gate
DeepSeek-V3 Capabilities
DeepSeek-V4-Flash-Base Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
DeepSeek-R1DeepSeek | vs | DeepSeek-V3DeepSeek | family variantstext |
DeepSeek-V3DeepSeek | vs | DeepSeek-V3.2DeepSeek | family variantstext |
DeepSeek-V4-FlashDeepSeek | vs | DeepSeek-V4-Flash-BaseDeepSeek | family variantstext |
DeepSeek-V3DeepSeek | vs | DeepSeek-V4-FlashDeepSeek | family variantstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs | DeepSeek-V4-Pro-BaseDeepSeek | family variantstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs | DeepSeek-V4-Flash-Vision-ExpDeepSeek | family variantstext |
DeepSeek-V3DeepSeek | vs |  GLM-5Z.ai | cross-developer peerstext |
DeepSeek-V3DeepSeek | vs | GLM-5.1Z.ai | cross-developer peerstext |
DeepSeek-V3DeepSeek | vs |  Kimi-K2-InstructMoonshot AI | cross-developer peerstext |
DeepSeek-V3DeepSeek | vs | cross-developer peerstext | |
DeepSeek-V4-Flash-BaseDeepSeek | vs | GLM-5.3-FlashZ.ai | cross-developer peerstext |
DeepSeek-V3DeepSeek | vs | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
DeepSeek-V3 vs DeepSeek-V4-Flash-Base FAQs
Is DeepSeek-V3 or DeepSeek-V4-Flash-Base better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both DeepSeek-V3 and DeepSeek-V4-Flash-Base, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
Only DeepSeek-V3 has a directly sourced input price: $0.2574 per million tokens. Only DeepSeek-V3 has a directly sourced output price: $0.89 per million tokens.
Which has a larger context window, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
DeepSeek-V4-Flash-Base has the larger sourced context window. DeepSeek-V3 supports 163,840 and DeepSeek-V4-Flash-Base supports 1,048,576.
Which performs better in benchmarks, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can DeepSeek-V3 or DeepSeek-V4-Flash-Base be self-hosted?+
Both models have the same recorded self-hosting status: supported. DeepSeek-V3 is open weight; DeepSeek-V4-Flash-Base is open weight.
Can DeepSeek-V3 and DeepSeek-V4-Flash-Base understand images?+
DeepSeek-V3 is not documented with image input; DeepSeek-V4-Flash-Base is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
Neither has a larger sourced maximum output. DeepSeek-V3 is — and DeepSeek-V4-Flash-Base is —.
Do DeepSeek-V3 and DeepSeek-V4-Flash-Base support reasoning and tool use?+
DeepSeek-V3: none of these features are definitively sourced. DeepSeek-V4-Flash-Base: none of these features are definitively sourced. Feature support does not establish relative quality.
Which is available from more inference providers, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
DeepSeek-V3 has 2 sourced provider routes; DeepSeek-V4-Flash-Base has 0, so DeepSeek-V3 has broader tracked availability.
Which offers better value, DeepSeek-V3 or DeepSeek-V4-Flash-Base?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.