Processing or generating 5,000 words (approximately 6,400 tokens) with GPT-4o mini ranges from $0.00048 (cached input) to $0.00384 (full generation).
Quick answer
For 5,000 words, GPT-4o mini processes approximately 6,400 tokens. That costs $0.00096 as uncached input, $0.00048 with the modeled cache discount, or $0.00384 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 5,000 words as prompt context, documentation, or background knowledge.
GPT-4o mini drafts a complete 5,000 words article, chapter, or code module.
4,000 words input prompt + 1,000 words output reply.
| Model | Provider | Input Cost (5,000 words) | Cached Input Cost | Output Cost (5,000 words) | Context Limit |
|---|---|---|---|---|---|
| GPT-4o mini (Current) | openai | $0.00096 | $0.00048 | $0.00384 | 128,000 |
| GPT-5.6 Luna | openai | $0.00128 | $0.000128 | $0.00768 | 1,050,000 |
| GPT-5.4 mini | openai | $0.0048 | $0.00048 | $0.0288 | 256,000 |
| GPT-5.4 nano | openai | $0.00128 | $0.000128 | $0.008 | 128,000 |
| Claude Haiku 4.5 | anthropic | $0.0066 | $0.00066 | $0.033 | 1,000,000 |
| Claude 3.5 Haiku | anthropic | $0.00528 | $0.000528 | $0.0264 | 200,000 |
For GPT-4o mini (o200k_base tokenizer), 5,000 words is approximately 6,400 tokens (an average ratio of 1.28 tokens per word in English). Code, technical vocabulary, and non-English scripts will have higher token densities.
Sending 5,000 words as input costs $0.00096 (or $0.00048 with prompt caching). Generating 5,000 words as output costs $0.00384. 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 $0.00048). For non-urgent asynchronous batch processing, 24-hour batch queues provide a flat 50% discount across all tokens (costing $0.00048 for input, $0.00192 for output).
At an average human reading speed of 250 words per minute, 5,000 words takes approximately 20 minutes to read. In contrast, GPT-4o mini can process or generate this text in seconds.