DeepSeek V4 Flash vs DeepSeek V4 Pro — Side-by-side pricing
Side-by-side API pricing and tokenizer details for DeepSeek V4 Flash (DeepSeek) and DeepSeek V4 Pro (DeepSeek).
Side-by-side pricing
| Feature | DeepSeek V4 Flash | DeepSeek V4 Pro |
|---|---|---|
| Provider | DeepSeek | DeepSeek |
| Input (per 1M tokens) | $0.140 | $0.435 |
| Output (per 1M tokens) | $0.280 | $0.870 |
| Context caching | Yes — 98% off cached tokens | Yes — 99% off cached tokens |
| Batch API discount | Not available | Not available |
| Context window | 1M tokens | 1M tokens |
| Tokenizer | SentencePiece (Llama) | SentencePiece (Llama) |
Real-world cost example
1,000 API requests per month, each with 500 input tokens and 200 output tokens (500K input + 200K output total).
DeepSeek V4 Flash
$0.1260
Input: $0.0700 +Output: $0.0560
DeepSeek V4 Pro
$0.3915
Input: $0.2175 +Output: $0.1740
DeepSeek V4 Flash is 68% cheaper for this workload — saving $0.2655 per month at this volume.
Frequently asked questions
Yes, DeepSeek V4 Flash is cheaper for the typical workload above. At $0.140/1M input and $0.280/1M output tokens, it costs $0.1260 versus $0.3915 for DeepSeek V4 Pro — a 68% difference. Costs scale linearly with request volume, so larger workloads amplify this gap.
DeepSeek V4 Flash supports a 1M token context window. DeepSeek V4 Pro supports a 1M token context window. A larger context window lets you include more text — documents, conversation history, or code — in a single API call.
DeepSeek V4 Flash supports context caching (98% off repeated tokens). It does not offer a batch API discount. DeepSeek V4 Pro supports context caching (99% off repeated tokens). It does not offer a batch API discount.
Yes, both DeepSeek V4 Flash and DeepSeek V4 Pro use the SentencePiece (Llama). The same text produces identical token counts on both models, so any cost difference is purely due to the rate each provider charges per token.
DeepSeek V4 Flash (DeepSeek): $0.14 input / $0.28 output per 1M tokens. DeepSeek V4 Pro (DeepSeek): $0.435 input / $0.87 output per 1M tokens. Rates shown before caching or batch discounts.
For an 80% output / 20% input workload — typical for code generation or long-form writing — DeepSeek V4 Flash costs $0.2520 per 1M total tokens and DeepSeek V4 Pro costs $0.7830. DeepSeek V4 Flash is 68% cheaper for this pattern. For your exact ratio, paste a real prompt into the calculator above.
DeepSeek V4 Flash has a 1M-token context window — approximately 750K words or ~3K pages of standard text. DeepSeek V4 Pro has a 1M-token context window — approximately 750K words or ~3K pages. (Estimates assume ~0.75 words per token.)
Calculate costs for your actual prompt
Paste your prompt into the calculator and get exact token counts using each model's real tokenizer — all in your browser.
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