DeepSeek V4 Flash Base vs Hy4 preview
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | DeepSeek-V4-Flash-Base | Hy4 preview |
|---|---|---|
| Developer | DeepSeek | Tencent |
| Family | Deepseek V4 Flash Base | Hy4 |
| Model | DeepSeek-V4-Flash-Base | Hy4 preview |
| Version | DeepSeek-V4-Flash-Base | Hy4 preview |
| Lifecycle | active | preview |
| Released | 2026-04-24 | 2026-08-28 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 1,049K | 1,000K |
| Total parameters | 292B | 770B |
| Active parameters | Unknown | 49B |
| License | Unknown | apache-2.0 |
| Open weights | Yes | Yes |
| API available | Unknown | Yes |
| Self-hostable | Yes | Yes |
| Provider access | Unknown | Openrouter (Standard) |
| Capabilities | generation | chat, generation, reasoning, tools |
13 comparable fields · 9 material differences · Pair passes the primary-source comparison gate
DeepSeek V4 Flash Base Capabilities
Hy4 preview Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
DeepSeek-V4-Flash-BaseDeepSeek | vs |  GPT-6 AstraOpenAI | cross-developer peerstext |
Claude Fable 5.1Anthropic | vs | DeepSeek-V4-Flash-BaseDeepSeek | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs |  Gemini 3.1 ProGoogle DeepMind | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs | DeepSeek-V4-ProDeepSeek | family variantstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs | Grok 4.6xAI | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs |  Qwen3.8-MaxQwen | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs |  Kimi-K3Moonshot AI | cross-developer peerstext |
 MiniMax-M3MiniMax | vs | DeepSeek-V4-Flash-BaseDeepSeek | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs |  GLM-5.3Z.ai | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | DeepSeek-V4-Flash-BaseDeepSeek | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs |  Mistral Large 3Mistral AI | cross-developer peerstext |
DeepSeek-V4-Flash-BaseDeepSeek | vs | cross-developer peerstext |
Primary Evidence
Sources and Freshness
Questions
DeepSeek V4 Flash Base vs Hy4 preview FAQs
Is DeepSeek V4 Flash Base or Hy4 preview better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both DeepSeek V4 Flash Base and Hy4 preview, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, DeepSeek V4 Flash Base or Hy4 preview?+
Only Hy4 preview has a directly sourced input price: $0.834 per million tokens. Only Hy4 preview has a directly sourced output price: $2.501 per million tokens.
Which has a larger context window, DeepSeek V4 Flash Base or Hy4 preview?+
DeepSeek V4 Flash Base has the larger sourced context window. DeepSeek V4 Flash Base supports 1,049K and Hy4 preview supports 1,000K.
Which performs better in benchmarks, DeepSeek V4 Flash Base or Hy4 preview?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can DeepSeek V4 Flash Base or Hy4 preview be self-hosted?+
Both models have the same recorded self-hosting status: supported. DeepSeek V4 Flash Base is open weight; Hy4 preview is open weight.
Can DeepSeek V4 Flash Base and Hy4 preview understand images?+
DeepSeek V4 Flash Base is not documented with image input; Hy4 preview is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, DeepSeek V4 Flash Base or Hy4 preview?+
Neither has a larger sourced maximum output. DeepSeek V4 Flash Base is — and Hy4 preview is —.
Do DeepSeek V4 Flash Base and Hy4 preview support reasoning and tool use?+
DeepSeek V4 Flash Base: none of these features are definitively sourced. Hy4 preview: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, DeepSeek V4 Flash Base or Hy4 preview?+
DeepSeek V4 Flash Base has 0 sourced provider routes; Hy4 preview has 1, so Hy4 preview has broader tracked availability.
Which offers better value, DeepSeek V4 Flash Base or Hy4 preview?+
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.