DeepSeek V4 Flash vs DeepSeek V4 Pro
DeepSeek V4 Flash and DeepSeek V4 Pro are both current deepseek production-tier models. DeepSeek V4 Flash is meaningfully cheaper at $0.14 / $0.28 per 1M.
Specs side by side
| Metric | DeepSeek DeepSeek V4 Flash | DeepSeek DeepSeek V4 Pro |
|---|---|---|
| Input price (per 1M) | $0.14 | $0.435 |
| Output price (per 1M) | $0.28 | $0.87 |
| Context window | 1M tokens | 1M tokens |
| Speed tier | balanced | balanced |
| Open weights | Yes | Yes |
| EU region | No | No |
| Free tier | OpenRouter | No |
| Prompt caching | Yes | Yes |
| Vision input | No | No |
| Extended thinking | Yes | Yes |
When to choose each
Choose DeepSeek V4 Flash if…
- Cost is a priority ($0.14 / $0.28 per 1M vs $0.43 / $0.87 per 1M)
- You want a free tier for prototyping
Choose DeepSeek V4 Pro if…
- DeepSeek V4 Pro is in the same tier as DeepSeek V4 Flash — pick by provider preference or API ecosystem
Benchmark delta
DeepSeek V4 Flash leads on
DeepSeek V4 Flash has no meaningful benchmark lead in this pair.
DeepSeek V4 Pro leads on
DeepSeek V4 Pro has no meaningful benchmark lead in this pair.
FAQ — DeepSeek V4 Flash vs DeepSeek V4 Pro
DeepSeek V4 Flash vs DeepSeek V4 Pro — which is better?
DeepSeek V4 Flash and DeepSeek V4 Pro are both current deepseek production-tier models. DeepSeek V4 Flash is meaningfully cheaper at $0.14 / $0.28 per 1M. The right pick depends on your use case — see "When to choose each" above for a data-driven decision.
How does DeepSeek V4 Flash pricing compare to DeepSeek V4 Pro?
DeepSeek V4 Flash costs $0.14 / $0.28 per 1M vs DeepSeek V4 Pro at $0.43 / $0.87 per 1M. DeepSeek V4 Flash is cheaper on output tokens by roughly 211%. Both support prompt caching, which reduces effective cost by 80-90% on repeat system prompts.
Does DeepSeek V4 Flash or DeepSeek V4 Pro have the bigger context window?
DeepSeek V4 Pro has a 1M-token context window — 1× the 1M context of DeepSeek V4 Flash. Enough for entire codebases, books, or multi-document RAG.
Is there a free tier for DeepSeek V4 Flash or DeepSeek V4 Pro?
DeepSeek V4 Flash: yes — Often available free via OpenRouter; official API is extremely cheap ($0.14 cache miss, $0.0028 cached input). DeepSeek V4 Pro: no — No free tier on the official API — but at $0.435/$0.87 per 1M it is near-free vs frontier peers.
Which is better for coding — DeepSeek V4 Flash or DeepSeek V4 Pro?
DeepSeek V4 Pro leads on coding benchmarks (DeepSeek V4 Flash: 89/100, DeepSeek V4 Pro: 91/100). For production coding agents also weigh tool-use performance — DeepSeek V4 Flash scores 84, DeepSeek V4 Pro scores 86.