Processing or generating 500,000 words (approximately 666,500 tokens) with DeepSeek V4 Pro ranges from $0.0293 (cached input) to $2.639 (full generation).
Quick answer
For 500,000 words, DeepSeek V4 Pro processes approximately 666,500 tokens. That costs $0.8798 as uncached input, $0.0293 with the modeled cache discount, or $2.639 when generated as output.
Method & trust
The estimate converts the selected English word count with the model tokenizer family, then applies the published input/output price per million tokens. Real prompts vary with code, formatting, language, and system instructions.
You send 500,000 words as prompt context, documentation, or background knowledge.
DeepSeek V4 Pro drafts a complete 500,000 words article, chapter, or code module.
400,000 words input prompt + 100,000 words output reply.
| Model | Provider | Input Cost (500,000 words) | Cached Input Cost | Output Cost (500,000 words) | Context Limit |
|---|---|---|---|---|---|
| DeepSeek V4 Pro (Current) | deepseek | $0.8798 | $0.0293 | $2.639 | 1,000,000 |
| GPT-5.6 Terra | openai | $1.28 | $0.128 | $7.68 | 1,050,000 |
| GPT-5.4 Workhorse | openai | $1.60 | $0.16 | $9.60 | 256,000 |
| o3-mini | openai | $0.704 | $0.352 | $2.816 | 200,000 |
| o4-mini | openai | $0.704 | $0.176 | $2.816 | 256,000 |
| o1-mini | openai | $0.704 | $0.352 | $2.816 | 128,000 |
For DeepSeek V4 Pro (deepseek_bpe tokenizer), 500,000 words is approximately 666,500 tokens (an average ratio of 1.33 tokens per word in English). Code, technical vocabulary, and non-English scripts will have higher token densities.
Sending 500,000 words as input costs $0.8798 (or $0.0293 with prompt caching). Generating 500,000 words as output costs $2.639. Output tokens are more expensive because autoregressive token generation requires significantly more computation per token.
Yes! If your input text is part of a repeated context, prompt caching saves 50% to 90% (costing $0.0293). For non-urgent asynchronous batch processing, 24-hour batch queues provide a flat 50% discount across all tokens (costing $0.4399 for input, $1.32 for output).
At an average human reading speed of 250 words per minute, 500,000 words takes approximately 2000 minutes to read. In contrast, DeepSeek V4 Pro can process or generate this text in seconds.